Investigation of Iridium Nanoparticles Supported on Sub-stoichiometric Titanium Oxides as Anodic Electrocatalysts in PEM Electrolysis. Part I.: Synthesis and Characterization
Abstract A novel route for obtaining iridium-based electrocatalysts supported on sub-stoichiometric titanium oxides for catalytic applications is presented. Chloride-free titanium oxide nanoparticles have been produced in a $ H_{2} $/$ O_{2} $-flame reactor using titanium (IV) tetraisopropoxide as p...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Muntean, R. [verfasserIn] Pascal, D. T. [verfasserIn] Rost, U. [verfasserIn] Holtkotte, L. [verfasserIn] Näther, J. [verfasserIn] Köster, F. [verfasserIn] Underberg, M. [verfasserIn] Hülser, T. [verfasserIn] Brodmann, M. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2019 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Topics in catalysis - Bussum : Baltzer, 1994, 62(2019), 5-6 vom: 30. März, Seite 429-438 |
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| Übergeordnetes Werk: |
volume:62 ; year:2019 ; number:5-6 ; day:30 ; month:03 ; pages:429-438 |
| Links: |
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| DOI / URN: |
10.1007/s11244-019-01164-3 |
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| Katalog-ID: |
SPR018124917 |
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| 245 | 1 | 0 | |a Investigation of Iridium Nanoparticles Supported on Sub-stoichiometric Titanium Oxides as Anodic Electrocatalysts in PEM Electrolysis. Part I.: Synthesis and Characterization |
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| 520 | |a Abstract A novel route for obtaining iridium-based electrocatalysts supported on sub-stoichiometric titanium oxides for catalytic applications is presented. Chloride-free titanium oxide nanoparticles have been produced in a $ H_{2} $/$ O_{2} $-flame reactor using titanium (IV) tetraisopropoxide as precursor material. Fuel rich combustion leads to the formation of sub-stoichiometric titania ($ TiO_{2−x} $) with an increased number of oxygen vacancies and enhanced electrical conductivity. Subsequently, $ TiO_{2−x} $ was dispersed in 2-propanol and spray coated on titanium substrate under argon atmosphere, forming a titania layer. This multilayered support system was decorated with iridium nanoparticles from an iridium-based electrolyte, applying an electrochemical method. This deposition technique leads to an optimized allocation of the electrocatalyst particles, adequate adhesion to the support and, furthermore, ensures the electrical conductivity from the deposited Ir particles via the $ TiO_{2−x} $ coating towards the titanium substrate. Finally, this process generated electrochemically active electrodes for the oxygen evolution reaction (OER) in acidic environment. The mean crystallite size of the iridium catalyst was determined from the X-ray diffraction patterns according to the Debye–Scherrer equation to be 11.4 nm. Linear and cyclic voltammetry were performed in 0.5 M $ H_{2} %$ SO_{4} $ on the iridium/titania/titanium samples and proved the electrochemical activity of the prepared system. The increased catalytic activity of the prepared iridium samples was indicated by a decrease of the Tafel slope for the Ti-PTL/$ TiO_{2−x} $/Ir in comparison to electrochemically oxidized iridium sample. At higher overpotentials, the calculated Tafel slopes (112 mV $ dec^{−1} $) present greater values than commonly reported Tafel slopes for $ IrO_{2} $ based electrodes, revealing a different rate determining step for the OER. | ||
| 650 | 4 | |a Water electrolysis |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Oxygen evolution reaction |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Electrocatalysts |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Iridium/iridium oxide |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Titanium oxide synthesis |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Pascal, D. T. |e verfasserin |4 aut | |
| 700 | 1 | |a Rost, U. |e verfasserin |4 aut | |
| 700 | 1 | |a Holtkotte, L. |e verfasserin |4 aut | |
| 700 | 1 | |a Näther, J. |e verfasserin |4 aut | |
| 700 | 1 | |a Köster, F. |e verfasserin |4 aut | |
| 700 | 1 | |a Underberg, M. |e verfasserin |4 aut | |
| 700 | 1 | |a Hülser, T. |e verfasserin |4 aut | |
| 700 | 1 | |a Brodmann, M. |e verfasserin |4 aut | |
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10.1007/s11244-019-01164-3 doi (DE-627)SPR018124917 (SPR)s11244-019-01164-3-e DE-627 ger DE-627 rakwb eng 540 ASE 35.17 bkl Muntean, R. verfasserin aut Investigation of Iridium Nanoparticles Supported on Sub-stoichiometric Titanium Oxides as Anodic Electrocatalysts in PEM Electrolysis. Part I.: Synthesis and Characterization 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract A novel route for obtaining iridium-based electrocatalysts supported on sub-stoichiometric titanium oxides for catalytic applications is presented. Chloride-free titanium oxide nanoparticles have been produced in a $ H_{2} $/$ O_{2} $-flame reactor using titanium (IV) tetraisopropoxide as precursor material. Fuel rich combustion leads to the formation of sub-stoichiometric titania ($ TiO_{2−x} $) with an increased number of oxygen vacancies and enhanced electrical conductivity. Subsequently, $ TiO_{2−x} $ was dispersed in 2-propanol and spray coated on titanium substrate under argon atmosphere, forming a titania layer. This multilayered support system was decorated with iridium nanoparticles from an iridium-based electrolyte, applying an electrochemical method. This deposition technique leads to an optimized allocation of the electrocatalyst particles, adequate adhesion to the support and, furthermore, ensures the electrical conductivity from the deposited Ir particles via the $ TiO_{2−x} $ coating towards the titanium substrate. Finally, this process generated electrochemically active electrodes for the oxygen evolution reaction (OER) in acidic environment. The mean crystallite size of the iridium catalyst was determined from the X-ray diffraction patterns according to the Debye–Scherrer equation to be 11.4 nm. Linear and cyclic voltammetry were performed in 0.5 M $ H_{2} %$ SO_{4} $ on the iridium/titania/titanium samples and proved the electrochemical activity of the prepared system. The increased catalytic activity of the prepared iridium samples was indicated by a decrease of the Tafel slope for the Ti-PTL/$ TiO_{2−x} $/Ir in comparison to electrochemically oxidized iridium sample. At higher overpotentials, the calculated Tafel slopes (112 mV $ dec^{−1} $) present greater values than commonly reported Tafel slopes for $ IrO_{2} $ based electrodes, revealing a different rate determining step for the OER. Water electrolysis (dpeaa)DE-He213 Oxygen evolution reaction (dpeaa)DE-He213 Electrocatalysts (dpeaa)DE-He213 Iridium/iridium oxide (dpeaa)DE-He213 Titanium oxide synthesis (dpeaa)DE-He213 Pascal, D. T. verfasserin aut Rost, U. verfasserin aut Holtkotte, L. verfasserin aut Näther, J. verfasserin aut Köster, F. verfasserin aut Underberg, M. verfasserin aut Hülser, T. verfasserin aut Brodmann, M. verfasserin aut Enthalten in Topics in catalysis Bussum : Baltzer, 1994 62(2019), 5-6 vom: 30. März, Seite 429-438 (DE-627)306712660 (DE-600)1500978-6 1572-9028 nnns volume:62 year:2019 number:5-6 day:30 month:03 pages:429-438 https://dx.doi.org/10.1007/s11244-019-01164-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.17 ASE AR 62 2019 5-6 30 03 429-438 |
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10.1007/s11244-019-01164-3 doi (DE-627)SPR018124917 (SPR)s11244-019-01164-3-e DE-627 ger DE-627 rakwb eng 540 ASE 35.17 bkl Muntean, R. verfasserin aut Investigation of Iridium Nanoparticles Supported on Sub-stoichiometric Titanium Oxides as Anodic Electrocatalysts in PEM Electrolysis. Part I.: Synthesis and Characterization 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract A novel route for obtaining iridium-based electrocatalysts supported on sub-stoichiometric titanium oxides for catalytic applications is presented. Chloride-free titanium oxide nanoparticles have been produced in a $ H_{2} $/$ O_{2} $-flame reactor using titanium (IV) tetraisopropoxide as precursor material. Fuel rich combustion leads to the formation of sub-stoichiometric titania ($ TiO_{2−x} $) with an increased number of oxygen vacancies and enhanced electrical conductivity. Subsequently, $ TiO_{2−x} $ was dispersed in 2-propanol and spray coated on titanium substrate under argon atmosphere, forming a titania layer. This multilayered support system was decorated with iridium nanoparticles from an iridium-based electrolyte, applying an electrochemical method. This deposition technique leads to an optimized allocation of the electrocatalyst particles, adequate adhesion to the support and, furthermore, ensures the electrical conductivity from the deposited Ir particles via the $ TiO_{2−x} $ coating towards the titanium substrate. Finally, this process generated electrochemically active electrodes for the oxygen evolution reaction (OER) in acidic environment. The mean crystallite size of the iridium catalyst was determined from the X-ray diffraction patterns according to the Debye–Scherrer equation to be 11.4 nm. Linear and cyclic voltammetry were performed in 0.5 M $ H_{2} %$ SO_{4} $ on the iridium/titania/titanium samples and proved the electrochemical activity of the prepared system. The increased catalytic activity of the prepared iridium samples was indicated by a decrease of the Tafel slope for the Ti-PTL/$ TiO_{2−x} $/Ir in comparison to electrochemically oxidized iridium sample. At higher overpotentials, the calculated Tafel slopes (112 mV $ dec^{−1} $) present greater values than commonly reported Tafel slopes for $ IrO_{2} $ based electrodes, revealing a different rate determining step for the OER. Water electrolysis (dpeaa)DE-He213 Oxygen evolution reaction (dpeaa)DE-He213 Electrocatalysts (dpeaa)DE-He213 Iridium/iridium oxide (dpeaa)DE-He213 Titanium oxide synthesis (dpeaa)DE-He213 Pascal, D. T. verfasserin aut Rost, U. verfasserin aut Holtkotte, L. verfasserin aut Näther, J. verfasserin aut Köster, F. verfasserin aut Underberg, M. verfasserin aut Hülser, T. verfasserin aut Brodmann, M. verfasserin aut Enthalten in Topics in catalysis Bussum : Baltzer, 1994 62(2019), 5-6 vom: 30. März, Seite 429-438 (DE-627)306712660 (DE-600)1500978-6 1572-9028 nnns volume:62 year:2019 number:5-6 day:30 month:03 pages:429-438 https://dx.doi.org/10.1007/s11244-019-01164-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.17 ASE AR 62 2019 5-6 30 03 429-438 |
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10.1007/s11244-019-01164-3 doi (DE-627)SPR018124917 (SPR)s11244-019-01164-3-e DE-627 ger DE-627 rakwb eng 540 ASE 35.17 bkl Muntean, R. verfasserin aut Investigation of Iridium Nanoparticles Supported on Sub-stoichiometric Titanium Oxides as Anodic Electrocatalysts in PEM Electrolysis. Part I.: Synthesis and Characterization 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract A novel route for obtaining iridium-based electrocatalysts supported on sub-stoichiometric titanium oxides for catalytic applications is presented. Chloride-free titanium oxide nanoparticles have been produced in a $ H_{2} $/$ O_{2} $-flame reactor using titanium (IV) tetraisopropoxide as precursor material. Fuel rich combustion leads to the formation of sub-stoichiometric titania ($ TiO_{2−x} $) with an increased number of oxygen vacancies and enhanced electrical conductivity. Subsequently, $ TiO_{2−x} $ was dispersed in 2-propanol and spray coated on titanium substrate under argon atmosphere, forming a titania layer. This multilayered support system was decorated with iridium nanoparticles from an iridium-based electrolyte, applying an electrochemical method. This deposition technique leads to an optimized allocation of the electrocatalyst particles, adequate adhesion to the support and, furthermore, ensures the electrical conductivity from the deposited Ir particles via the $ TiO_{2−x} $ coating towards the titanium substrate. Finally, this process generated electrochemically active electrodes for the oxygen evolution reaction (OER) in acidic environment. The mean crystallite size of the iridium catalyst was determined from the X-ray diffraction patterns according to the Debye–Scherrer equation to be 11.4 nm. Linear and cyclic voltammetry were performed in 0.5 M $ H_{2} %$ SO_{4} $ on the iridium/titania/titanium samples and proved the electrochemical activity of the prepared system. The increased catalytic activity of the prepared iridium samples was indicated by a decrease of the Tafel slope for the Ti-PTL/$ TiO_{2−x} $/Ir in comparison to electrochemically oxidized iridium sample. At higher overpotentials, the calculated Tafel slopes (112 mV $ dec^{−1} $) present greater values than commonly reported Tafel slopes for $ IrO_{2} $ based electrodes, revealing a different rate determining step for the OER. Water electrolysis (dpeaa)DE-He213 Oxygen evolution reaction (dpeaa)DE-He213 Electrocatalysts (dpeaa)DE-He213 Iridium/iridium oxide (dpeaa)DE-He213 Titanium oxide synthesis (dpeaa)DE-He213 Pascal, D. T. verfasserin aut Rost, U. verfasserin aut Holtkotte, L. verfasserin aut Näther, J. verfasserin aut Köster, F. verfasserin aut Underberg, M. verfasserin aut Hülser, T. verfasserin aut Brodmann, M. verfasserin aut Enthalten in Topics in catalysis Bussum : Baltzer, 1994 62(2019), 5-6 vom: 30. März, Seite 429-438 (DE-627)306712660 (DE-600)1500978-6 1572-9028 nnns volume:62 year:2019 number:5-6 day:30 month:03 pages:429-438 https://dx.doi.org/10.1007/s11244-019-01164-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.17 ASE AR 62 2019 5-6 30 03 429-438 |
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10.1007/s11244-019-01164-3 doi (DE-627)SPR018124917 (SPR)s11244-019-01164-3-e DE-627 ger DE-627 rakwb eng 540 ASE 35.17 bkl Muntean, R. verfasserin aut Investigation of Iridium Nanoparticles Supported on Sub-stoichiometric Titanium Oxides as Anodic Electrocatalysts in PEM Electrolysis. Part I.: Synthesis and Characterization 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract A novel route for obtaining iridium-based electrocatalysts supported on sub-stoichiometric titanium oxides for catalytic applications is presented. Chloride-free titanium oxide nanoparticles have been produced in a $ H_{2} $/$ O_{2} $-flame reactor using titanium (IV) tetraisopropoxide as precursor material. Fuel rich combustion leads to the formation of sub-stoichiometric titania ($ TiO_{2−x} $) with an increased number of oxygen vacancies and enhanced electrical conductivity. Subsequently, $ TiO_{2−x} $ was dispersed in 2-propanol and spray coated on titanium substrate under argon atmosphere, forming a titania layer. This multilayered support system was decorated with iridium nanoparticles from an iridium-based electrolyte, applying an electrochemical method. This deposition technique leads to an optimized allocation of the electrocatalyst particles, adequate adhesion to the support and, furthermore, ensures the electrical conductivity from the deposited Ir particles via the $ TiO_{2−x} $ coating towards the titanium substrate. Finally, this process generated electrochemically active electrodes for the oxygen evolution reaction (OER) in acidic environment. The mean crystallite size of the iridium catalyst was determined from the X-ray diffraction patterns according to the Debye–Scherrer equation to be 11.4 nm. Linear and cyclic voltammetry were performed in 0.5 M $ H_{2} %$ SO_{4} $ on the iridium/titania/titanium samples and proved the electrochemical activity of the prepared system. The increased catalytic activity of the prepared iridium samples was indicated by a decrease of the Tafel slope for the Ti-PTL/$ TiO_{2−x} $/Ir in comparison to electrochemically oxidized iridium sample. At higher overpotentials, the calculated Tafel slopes (112 mV $ dec^{−1} $) present greater values than commonly reported Tafel slopes for $ IrO_{2} $ based electrodes, revealing a different rate determining step for the OER. Water electrolysis (dpeaa)DE-He213 Oxygen evolution reaction (dpeaa)DE-He213 Electrocatalysts (dpeaa)DE-He213 Iridium/iridium oxide (dpeaa)DE-He213 Titanium oxide synthesis (dpeaa)DE-He213 Pascal, D. T. verfasserin aut Rost, U. verfasserin aut Holtkotte, L. verfasserin aut Näther, J. verfasserin aut Köster, F. verfasserin aut Underberg, M. verfasserin aut Hülser, T. verfasserin aut Brodmann, M. verfasserin aut Enthalten in Topics in catalysis Bussum : Baltzer, 1994 62(2019), 5-6 vom: 30. März, Seite 429-438 (DE-627)306712660 (DE-600)1500978-6 1572-9028 nnns volume:62 year:2019 number:5-6 day:30 month:03 pages:429-438 https://dx.doi.org/10.1007/s11244-019-01164-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.17 ASE AR 62 2019 5-6 30 03 429-438 |
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10.1007/s11244-019-01164-3 doi (DE-627)SPR018124917 (SPR)s11244-019-01164-3-e DE-627 ger DE-627 rakwb eng 540 ASE 35.17 bkl Muntean, R. verfasserin aut Investigation of Iridium Nanoparticles Supported on Sub-stoichiometric Titanium Oxides as Anodic Electrocatalysts in PEM Electrolysis. Part I.: Synthesis and Characterization 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract A novel route for obtaining iridium-based electrocatalysts supported on sub-stoichiometric titanium oxides for catalytic applications is presented. Chloride-free titanium oxide nanoparticles have been produced in a $ H_{2} $/$ O_{2} $-flame reactor using titanium (IV) tetraisopropoxide as precursor material. Fuel rich combustion leads to the formation of sub-stoichiometric titania ($ TiO_{2−x} $) with an increased number of oxygen vacancies and enhanced electrical conductivity. Subsequently, $ TiO_{2−x} $ was dispersed in 2-propanol and spray coated on titanium substrate under argon atmosphere, forming a titania layer. This multilayered support system was decorated with iridium nanoparticles from an iridium-based electrolyte, applying an electrochemical method. This deposition technique leads to an optimized allocation of the electrocatalyst particles, adequate adhesion to the support and, furthermore, ensures the electrical conductivity from the deposited Ir particles via the $ TiO_{2−x} $ coating towards the titanium substrate. Finally, this process generated electrochemically active electrodes for the oxygen evolution reaction (OER) in acidic environment. The mean crystallite size of the iridium catalyst was determined from the X-ray diffraction patterns according to the Debye–Scherrer equation to be 11.4 nm. Linear and cyclic voltammetry were performed in 0.5 M $ H_{2} %$ SO_{4} $ on the iridium/titania/titanium samples and proved the electrochemical activity of the prepared system. The increased catalytic activity of the prepared iridium samples was indicated by a decrease of the Tafel slope for the Ti-PTL/$ TiO_{2−x} $/Ir in comparison to electrochemically oxidized iridium sample. At higher overpotentials, the calculated Tafel slopes (112 mV $ dec^{−1} $) present greater values than commonly reported Tafel slopes for $ IrO_{2} $ based electrodes, revealing a different rate determining step for the OER. Water electrolysis (dpeaa)DE-He213 Oxygen evolution reaction (dpeaa)DE-He213 Electrocatalysts (dpeaa)DE-He213 Iridium/iridium oxide (dpeaa)DE-He213 Titanium oxide synthesis (dpeaa)DE-He213 Pascal, D. T. verfasserin aut Rost, U. verfasserin aut Holtkotte, L. verfasserin aut Näther, J. verfasserin aut Köster, F. verfasserin aut Underberg, M. verfasserin aut Hülser, T. verfasserin aut Brodmann, M. verfasserin aut Enthalten in Topics in catalysis Bussum : Baltzer, 1994 62(2019), 5-6 vom: 30. März, Seite 429-438 (DE-627)306712660 (DE-600)1500978-6 1572-9028 nnns volume:62 year:2019 number:5-6 day:30 month:03 pages:429-438 https://dx.doi.org/10.1007/s11244-019-01164-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.17 ASE AR 62 2019 5-6 30 03 429-438 |
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Water electrolysis Oxygen evolution reaction Electrocatalysts Iridium/iridium oxide Titanium oxide synthesis |
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Muntean, R. |
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Muntean, R. ddc 540 bkl 35.17 misc Water electrolysis misc Oxygen evolution reaction misc Electrocatalysts misc Iridium/iridium oxide misc Titanium oxide synthesis Investigation of Iridium Nanoparticles Supported on Sub-stoichiometric Titanium Oxides as Anodic Electrocatalysts in PEM Electrolysis. Part I.: Synthesis and Characterization |
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540 ASE 35.17 bkl Investigation of Iridium Nanoparticles Supported on Sub-stoichiometric Titanium Oxides as Anodic Electrocatalysts in PEM Electrolysis. Part I.: Synthesis and Characterization Water electrolysis (dpeaa)DE-He213 Oxygen evolution reaction (dpeaa)DE-He213 Electrocatalysts (dpeaa)DE-He213 Iridium/iridium oxide (dpeaa)DE-He213 Titanium oxide synthesis (dpeaa)DE-He213 |
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ddc 540 bkl 35.17 misc Water electrolysis misc Oxygen evolution reaction misc Electrocatalysts misc Iridium/iridium oxide misc Titanium oxide synthesis |
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ddc 540 bkl 35.17 misc Water electrolysis misc Oxygen evolution reaction misc Electrocatalysts misc Iridium/iridium oxide misc Titanium oxide synthesis |
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ddc 540 bkl 35.17 misc Water electrolysis misc Oxygen evolution reaction misc Electrocatalysts misc Iridium/iridium oxide misc Titanium oxide synthesis |
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Investigation of Iridium Nanoparticles Supported on Sub-stoichiometric Titanium Oxides as Anodic Electrocatalysts in PEM Electrolysis. Part I.: Synthesis and Characterization |
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Investigation of Iridium Nanoparticles Supported on Sub-stoichiometric Titanium Oxides as Anodic Electrocatalysts in PEM Electrolysis. Part I.: Synthesis and Characterization |
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Muntean, R. |
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Topics in catalysis |
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Muntean, R. Pascal, D. T. Rost, U. Holtkotte, L. Näther, J. Köster, F. Underberg, M. Hülser, T. Brodmann, M. |
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Muntean, R. |
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10.1007/s11244-019-01164-3 |
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investigation of iridium nanoparticles supported on sub-stoichiometric titanium oxides as anodic electrocatalysts in pem electrolysis. part i.: synthesis and characterization |
| title_auth |
Investigation of Iridium Nanoparticles Supported on Sub-stoichiometric Titanium Oxides as Anodic Electrocatalysts in PEM Electrolysis. Part I.: Synthesis and Characterization |
| abstract |
Abstract A novel route for obtaining iridium-based electrocatalysts supported on sub-stoichiometric titanium oxides for catalytic applications is presented. Chloride-free titanium oxide nanoparticles have been produced in a $ H_{2} $/$ O_{2} $-flame reactor using titanium (IV) tetraisopropoxide as precursor material. Fuel rich combustion leads to the formation of sub-stoichiometric titania ($ TiO_{2−x} $) with an increased number of oxygen vacancies and enhanced electrical conductivity. Subsequently, $ TiO_{2−x} $ was dispersed in 2-propanol and spray coated on titanium substrate under argon atmosphere, forming a titania layer. This multilayered support system was decorated with iridium nanoparticles from an iridium-based electrolyte, applying an electrochemical method. This deposition technique leads to an optimized allocation of the electrocatalyst particles, adequate adhesion to the support and, furthermore, ensures the electrical conductivity from the deposited Ir particles via the $ TiO_{2−x} $ coating towards the titanium substrate. Finally, this process generated electrochemically active electrodes for the oxygen evolution reaction (OER) in acidic environment. The mean crystallite size of the iridium catalyst was determined from the X-ray diffraction patterns according to the Debye–Scherrer equation to be 11.4 nm. Linear and cyclic voltammetry were performed in 0.5 M $ H_{2} %$ SO_{4} $ on the iridium/titania/titanium samples and proved the electrochemical activity of the prepared system. The increased catalytic activity of the prepared iridium samples was indicated by a decrease of the Tafel slope for the Ti-PTL/$ TiO_{2−x} $/Ir in comparison to electrochemically oxidized iridium sample. At higher overpotentials, the calculated Tafel slopes (112 mV $ dec^{−1} $) present greater values than commonly reported Tafel slopes for $ IrO_{2} $ based electrodes, revealing a different rate determining step for the OER. |
| abstractGer |
Abstract A novel route for obtaining iridium-based electrocatalysts supported on sub-stoichiometric titanium oxides for catalytic applications is presented. Chloride-free titanium oxide nanoparticles have been produced in a $ H_{2} $/$ O_{2} $-flame reactor using titanium (IV) tetraisopropoxide as precursor material. Fuel rich combustion leads to the formation of sub-stoichiometric titania ($ TiO_{2−x} $) with an increased number of oxygen vacancies and enhanced electrical conductivity. Subsequently, $ TiO_{2−x} $ was dispersed in 2-propanol and spray coated on titanium substrate under argon atmosphere, forming a titania layer. This multilayered support system was decorated with iridium nanoparticles from an iridium-based electrolyte, applying an electrochemical method. This deposition technique leads to an optimized allocation of the electrocatalyst particles, adequate adhesion to the support and, furthermore, ensures the electrical conductivity from the deposited Ir particles via the $ TiO_{2−x} $ coating towards the titanium substrate. Finally, this process generated electrochemically active electrodes for the oxygen evolution reaction (OER) in acidic environment. The mean crystallite size of the iridium catalyst was determined from the X-ray diffraction patterns according to the Debye–Scherrer equation to be 11.4 nm. Linear and cyclic voltammetry were performed in 0.5 M $ H_{2} %$ SO_{4} $ on the iridium/titania/titanium samples and proved the electrochemical activity of the prepared system. The increased catalytic activity of the prepared iridium samples was indicated by a decrease of the Tafel slope for the Ti-PTL/$ TiO_{2−x} $/Ir in comparison to electrochemically oxidized iridium sample. At higher overpotentials, the calculated Tafel slopes (112 mV $ dec^{−1} $) present greater values than commonly reported Tafel slopes for $ IrO_{2} $ based electrodes, revealing a different rate determining step for the OER. |
| abstract_unstemmed |
Abstract A novel route for obtaining iridium-based electrocatalysts supported on sub-stoichiometric titanium oxides for catalytic applications is presented. Chloride-free titanium oxide nanoparticles have been produced in a $ H_{2} $/$ O_{2} $-flame reactor using titanium (IV) tetraisopropoxide as precursor material. Fuel rich combustion leads to the formation of sub-stoichiometric titania ($ TiO_{2−x} $) with an increased number of oxygen vacancies and enhanced electrical conductivity. Subsequently, $ TiO_{2−x} $ was dispersed in 2-propanol and spray coated on titanium substrate under argon atmosphere, forming a titania layer. This multilayered support system was decorated with iridium nanoparticles from an iridium-based electrolyte, applying an electrochemical method. This deposition technique leads to an optimized allocation of the electrocatalyst particles, adequate adhesion to the support and, furthermore, ensures the electrical conductivity from the deposited Ir particles via the $ TiO_{2−x} $ coating towards the titanium substrate. Finally, this process generated electrochemically active electrodes for the oxygen evolution reaction (OER) in acidic environment. The mean crystallite size of the iridium catalyst was determined from the X-ray diffraction patterns according to the Debye–Scherrer equation to be 11.4 nm. Linear and cyclic voltammetry were performed in 0.5 M $ H_{2} %$ SO_{4} $ on the iridium/titania/titanium samples and proved the electrochemical activity of the prepared system. The increased catalytic activity of the prepared iridium samples was indicated by a decrease of the Tafel slope for the Ti-PTL/$ TiO_{2−x} $/Ir in comparison to electrochemically oxidized iridium sample. At higher overpotentials, the calculated Tafel slopes (112 mV $ dec^{−1} $) present greater values than commonly reported Tafel slopes for $ IrO_{2} $ based electrodes, revealing a different rate determining step for the OER. |
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Investigation of Iridium Nanoparticles Supported on Sub-stoichiometric Titanium Oxides as Anodic Electrocatalysts in PEM Electrolysis. Part I.: Synthesis and Characterization |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">SPR018124917</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230519145028.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">201006s2019 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1007/s11244-019-01164-3</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)SPR018124917</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(SPR)s11244-019-01164-3-e</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">540</subfield><subfield code="q">ASE</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">35.17</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Muntean, R.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Investigation of Iridium Nanoparticles Supported on Sub-stoichiometric Titanium Oxides as Anodic Electrocatalysts in PEM Electrolysis. Part I.: Synthesis and Characterization</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2019</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract A novel route for obtaining iridium-based electrocatalysts supported on sub-stoichiometric titanium oxides for catalytic applications is presented. Chloride-free titanium oxide nanoparticles have been produced in a $ H_{2} $/$ O_{2} $-flame reactor using titanium (IV) tetraisopropoxide as precursor material. Fuel rich combustion leads to the formation of sub-stoichiometric titania ($ TiO_{2−x} $) with an increased number of oxygen vacancies and enhanced electrical conductivity. Subsequently, $ TiO_{2−x} $ was dispersed in 2-propanol and spray coated on titanium substrate under argon atmosphere, forming a titania layer. This multilayered support system was decorated with iridium nanoparticles from an iridium-based electrolyte, applying an electrochemical method. This deposition technique leads to an optimized allocation of the electrocatalyst particles, adequate adhesion to the support and, furthermore, ensures the electrical conductivity from the deposited Ir particles via the $ TiO_{2−x} $ coating towards the titanium substrate. Finally, this process generated electrochemically active electrodes for the oxygen evolution reaction (OER) in acidic environment. The mean crystallite size of the iridium catalyst was determined from the X-ray diffraction patterns according to the Debye–Scherrer equation to be 11.4 nm. Linear and cyclic voltammetry were performed in 0.5 M $ H_{2} %$ SO_{4} $ on the iridium/titania/titanium samples and proved the electrochemical activity of the prepared system. The increased catalytic activity of the prepared iridium samples was indicated by a decrease of the Tafel slope for the Ti-PTL/$ TiO_{2−x} $/Ir in comparison to electrochemically oxidized iridium sample. At higher overpotentials, the calculated Tafel slopes (112 mV $ dec^{−1} $) present greater values than commonly reported Tafel slopes for $ IrO_{2} $ based electrodes, revealing a different rate determining step for the OER.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Water electrolysis</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Oxygen evolution reaction</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Electrocatalysts</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Iridium/iridium oxide</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Titanium oxide synthesis</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Pascal, D. 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März, Seite 429-438</subfield><subfield code="w">(DE-627)306712660</subfield><subfield code="w">(DE-600)1500978-6</subfield><subfield code="x">1572-9028</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:62</subfield><subfield code="g">year:2019</subfield><subfield code="g">number:5-6</subfield><subfield code="g">day:30</subfield><subfield code="g">month:03</subfield><subfield code="g">pages:429-438</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://dx.doi.org/10.1007/s11244-019-01164-3</subfield><subfield code="z">lizenzpflichtig</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_SPRINGER</subfield></datafield><datafield 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