Deposition of FeOOH Layer on Ultrathin Hematite Nanoflakes to Promote Photoelectrochemical Water Splitting

Hematite is one of the most promising photoanode materials for the study of photoelectrochemical (PEC) water splitting because of its ideal bandgap with sufficient visible light absorption and stability in alkaline electrolytes. However, owing to the intrinsically high electron-hole recombination, t...
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Autor*in:	Wenyao Zhang [verfasserIn] Ya Zhang [verfasserIn] Xiao Miao [verfasserIn] Ling Zhao [verfasserIn] Changqing Zhu [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2024

Schlagwörter:	hematite photoanode cocatalyst photoelectrochemical water splitting

Übergeordnetes Werk:	In: Micromachines - MDPI AG, 2010, 15(2024), 3, p 387
Übergeordnetes Werk:	volume:15 ; year:2024 ; number:3, p 387

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DOI / URN:	10.3390/mi15030387

Katalog-ID:	DOAJ100462790

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520			\|a Hematite is one of the most promising photoanode materials for the study of photoelectrochemical (PEC) water splitting because of its ideal bandgap with sufficient visible light absorption and stability in alkaline electrolytes. However, owing to the intrinsically high electron-hole recombination, the PEC performance of hematite is still far below that expected. The efficient charge separation can be achieved via growth of FeOOH on hematite photoanode. In this study, hematite nanostructures were successfully grown on the surface of iron foil by the simple immersion deposition method and thermal oxidation treatment. Furthermore, cocatalyst FeOOH was successfully added to the hematite nanostructure surface to improve charge separation and charge transfer, and thus promote the photoelectrochemical water splitting. By utilizing the FeOOH overlayer as a cocatalyst, the photocurrent density of hematite exhibited a substantial 86% increase under 1.5 V<sub<RHE</sub<, while the onset potential showed an apparent shift towards the cathodic direction. This can be ascribed to the high reaction area for the nanostructured morphology and high electrocatalytic activity of FeOOH that enhanced the amount of photogenerated holes and accelerated the kinetics of water splitting.
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allfields	10.3390/mi15030387 doi (DE-627)DOAJ100462790 (DE-599)DOAJcc223ec5ba7041799ce3ba2984fd1507 DE-627 ger DE-627 rakwb eng TJ1-1570 Wenyao Zhang verfasserin aut Deposition of FeOOH Layer on Ultrathin Hematite Nanoflakes to Promote Photoelectrochemical Water Splitting 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Hematite is one of the most promising photoanode materials for the study of photoelectrochemical (PEC) water splitting because of its ideal bandgap with sufficient visible light absorption and stability in alkaline electrolytes. However, owing to the intrinsically high electron-hole recombination, the PEC performance of hematite is still far below that expected. The efficient charge separation can be achieved via growth of FeOOH on hematite photoanode. In this study, hematite nanostructures were successfully grown on the surface of iron foil by the simple immersion deposition method and thermal oxidation treatment. Furthermore, cocatalyst FeOOH was successfully added to the hematite nanostructure surface to improve charge separation and charge transfer, and thus promote the photoelectrochemical water splitting. By utilizing the FeOOH overlayer as a cocatalyst, the photocurrent density of hematite exhibited a substantial 86% increase under 1.5 V<sub<RHE</sub<, while the onset potential showed an apparent shift towards the cathodic direction. This can be ascribed to the high reaction area for the nanostructured morphology and high electrocatalytic activity of FeOOH that enhanced the amount of photogenerated holes and accelerated the kinetics of water splitting. hematite photoanode cocatalyst photoelectrochemical water splitting Mechanical engineering and machinery Ya Zhang verfasserin aut Xiao Miao verfasserin aut Ling Zhao verfasserin aut Changqing Zhu verfasserin aut In Micromachines MDPI AG, 2010 15(2024), 3, p 387 (DE-627)665016069 (DE-600)2620864-7 2072666X nnns volume:15 year:2024 number:3, p 387 https://doi.org/10.3390/mi15030387 kostenfrei https://doaj.org/article/cc223ec5ba7041799ce3ba2984fd1507 kostenfrei https://www.mdpi.com/2072-666X/15/3/387 kostenfrei https://doaj.org/toc/2072-666X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 15 2024 3, p 387
spelling	10.3390/mi15030387 doi (DE-627)DOAJ100462790 (DE-599)DOAJcc223ec5ba7041799ce3ba2984fd1507 DE-627 ger DE-627 rakwb eng TJ1-1570 Wenyao Zhang verfasserin aut Deposition of FeOOH Layer on Ultrathin Hematite Nanoflakes to Promote Photoelectrochemical Water Splitting 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Hematite is one of the most promising photoanode materials for the study of photoelectrochemical (PEC) water splitting because of its ideal bandgap with sufficient visible light absorption and stability in alkaline electrolytes. However, owing to the intrinsically high electron-hole recombination, the PEC performance of hematite is still far below that expected. The efficient charge separation can be achieved via growth of FeOOH on hematite photoanode. In this study, hematite nanostructures were successfully grown on the surface of iron foil by the simple immersion deposition method and thermal oxidation treatment. Furthermore, cocatalyst FeOOH was successfully added to the hematite nanostructure surface to improve charge separation and charge transfer, and thus promote the photoelectrochemical water splitting. By utilizing the FeOOH overlayer as a cocatalyst, the photocurrent density of hematite exhibited a substantial 86% increase under 1.5 V<sub<RHE</sub<, while the onset potential showed an apparent shift towards the cathodic direction. This can be ascribed to the high reaction area for the nanostructured morphology and high electrocatalytic activity of FeOOH that enhanced the amount of photogenerated holes and accelerated the kinetics of water splitting. hematite photoanode cocatalyst photoelectrochemical water splitting Mechanical engineering and machinery Ya Zhang verfasserin aut Xiao Miao verfasserin aut Ling Zhao verfasserin aut Changqing Zhu verfasserin aut In Micromachines MDPI AG, 2010 15(2024), 3, p 387 (DE-627)665016069 (DE-600)2620864-7 2072666X nnns volume:15 year:2024 number:3, p 387 https://doi.org/10.3390/mi15030387 kostenfrei https://doaj.org/article/cc223ec5ba7041799ce3ba2984fd1507 kostenfrei https://www.mdpi.com/2072-666X/15/3/387 kostenfrei https://doaj.org/toc/2072-666X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 15 2024 3, p 387
allfields_unstemmed	10.3390/mi15030387 doi (DE-627)DOAJ100462790 (DE-599)DOAJcc223ec5ba7041799ce3ba2984fd1507 DE-627 ger DE-627 rakwb eng TJ1-1570 Wenyao Zhang verfasserin aut Deposition of FeOOH Layer on Ultrathin Hematite Nanoflakes to Promote Photoelectrochemical Water Splitting 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Hematite is one of the most promising photoanode materials for the study of photoelectrochemical (PEC) water splitting because of its ideal bandgap with sufficient visible light absorption and stability in alkaline electrolytes. However, owing to the intrinsically high electron-hole recombination, the PEC performance of hematite is still far below that expected. The efficient charge separation can be achieved via growth of FeOOH on hematite photoanode. In this study, hematite nanostructures were successfully grown on the surface of iron foil by the simple immersion deposition method and thermal oxidation treatment. Furthermore, cocatalyst FeOOH was successfully added to the hematite nanostructure surface to improve charge separation and charge transfer, and thus promote the photoelectrochemical water splitting. By utilizing the FeOOH overlayer as a cocatalyst, the photocurrent density of hematite exhibited a substantial 86% increase under 1.5 V<sub<RHE</sub<, while the onset potential showed an apparent shift towards the cathodic direction. This can be ascribed to the high reaction area for the nanostructured morphology and high electrocatalytic activity of FeOOH that enhanced the amount of photogenerated holes and accelerated the kinetics of water splitting. hematite photoanode cocatalyst photoelectrochemical water splitting Mechanical engineering and machinery Ya Zhang verfasserin aut Xiao Miao verfasserin aut Ling Zhao verfasserin aut Changqing Zhu verfasserin aut In Micromachines MDPI AG, 2010 15(2024), 3, p 387 (DE-627)665016069 (DE-600)2620864-7 2072666X nnns volume:15 year:2024 number:3, p 387 https://doi.org/10.3390/mi15030387 kostenfrei https://doaj.org/article/cc223ec5ba7041799ce3ba2984fd1507 kostenfrei https://www.mdpi.com/2072-666X/15/3/387 kostenfrei https://doaj.org/toc/2072-666X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 15 2024 3, p 387
allfieldsGer	10.3390/mi15030387 doi (DE-627)DOAJ100462790 (DE-599)DOAJcc223ec5ba7041799ce3ba2984fd1507 DE-627 ger DE-627 rakwb eng TJ1-1570 Wenyao Zhang verfasserin aut Deposition of FeOOH Layer on Ultrathin Hematite Nanoflakes to Promote Photoelectrochemical Water Splitting 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Hematite is one of the most promising photoanode materials for the study of photoelectrochemical (PEC) water splitting because of its ideal bandgap with sufficient visible light absorption and stability in alkaline electrolytes. However, owing to the intrinsically high electron-hole recombination, the PEC performance of hematite is still far below that expected. The efficient charge separation can be achieved via growth of FeOOH on hematite photoanode. In this study, hematite nanostructures were successfully grown on the surface of iron foil by the simple immersion deposition method and thermal oxidation treatment. Furthermore, cocatalyst FeOOH was successfully added to the hematite nanostructure surface to improve charge separation and charge transfer, and thus promote the photoelectrochemical water splitting. By utilizing the FeOOH overlayer as a cocatalyst, the photocurrent density of hematite exhibited a substantial 86% increase under 1.5 V<sub<RHE</sub<, while the onset potential showed an apparent shift towards the cathodic direction. This can be ascribed to the high reaction area for the nanostructured morphology and high electrocatalytic activity of FeOOH that enhanced the amount of photogenerated holes and accelerated the kinetics of water splitting. hematite photoanode cocatalyst photoelectrochemical water splitting Mechanical engineering and machinery Ya Zhang verfasserin aut Xiao Miao verfasserin aut Ling Zhao verfasserin aut Changqing Zhu verfasserin aut In Micromachines MDPI AG, 2010 15(2024), 3, p 387 (DE-627)665016069 (DE-600)2620864-7 2072666X nnns volume:15 year:2024 number:3, p 387 https://doi.org/10.3390/mi15030387 kostenfrei https://doaj.org/article/cc223ec5ba7041799ce3ba2984fd1507 kostenfrei https://www.mdpi.com/2072-666X/15/3/387 kostenfrei https://doaj.org/toc/2072-666X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 15 2024 3, p 387
allfieldsSound	10.3390/mi15030387 doi (DE-627)DOAJ100462790 (DE-599)DOAJcc223ec5ba7041799ce3ba2984fd1507 DE-627 ger DE-627 rakwb eng TJ1-1570 Wenyao Zhang verfasserin aut Deposition of FeOOH Layer on Ultrathin Hematite Nanoflakes to Promote Photoelectrochemical Water Splitting 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Hematite is one of the most promising photoanode materials for the study of photoelectrochemical (PEC) water splitting because of its ideal bandgap with sufficient visible light absorption and stability in alkaline electrolytes. However, owing to the intrinsically high electron-hole recombination, the PEC performance of hematite is still far below that expected. The efficient charge separation can be achieved via growth of FeOOH on hematite photoanode. In this study, hematite nanostructures were successfully grown on the surface of iron foil by the simple immersion deposition method and thermal oxidation treatment. Furthermore, cocatalyst FeOOH was successfully added to the hematite nanostructure surface to improve charge separation and charge transfer, and thus promote the photoelectrochemical water splitting. By utilizing the FeOOH overlayer as a cocatalyst, the photocurrent density of hematite exhibited a substantial 86% increase under 1.5 V<sub<RHE</sub<, while the onset potential showed an apparent shift towards the cathodic direction. This can be ascribed to the high reaction area for the nanostructured morphology and high electrocatalytic activity of FeOOH that enhanced the amount of photogenerated holes and accelerated the kinetics of water splitting. hematite photoanode cocatalyst photoelectrochemical water splitting Mechanical engineering and machinery Ya Zhang verfasserin aut Xiao Miao verfasserin aut Ling Zhao verfasserin aut Changqing Zhu verfasserin aut In Micromachines MDPI AG, 2010 15(2024), 3, p 387 (DE-627)665016069 (DE-600)2620864-7 2072666X nnns volume:15 year:2024 number:3, p 387 https://doi.org/10.3390/mi15030387 kostenfrei https://doaj.org/article/cc223ec5ba7041799ce3ba2984fd1507 kostenfrei https://www.mdpi.com/2072-666X/15/3/387 kostenfrei https://doaj.org/toc/2072-666X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 15 2024 3, p 387
language	English
source	In Micromachines 15(2024), 3, p 387 volume:15 year:2024 number:3, p 387
sourceStr	In Micromachines 15(2024), 3, p 387 volume:15 year:2024 number:3, p 387
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	hematite photoanode cocatalyst photoelectrochemical water splitting Mechanical engineering and machinery
isfreeaccess_bool	true
container_title	Micromachines
authorswithroles_txt_mv	Wenyao Zhang @@aut@@ Ya Zhang @@aut@@ Xiao Miao @@aut@@ Ling Zhao @@aut@@ Changqing Zhu @@aut@@
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callnumber-first	T - Technology
author	Wenyao Zhang
spellingShingle	Wenyao Zhang misc TJ1-1570 misc hematite photoanode misc cocatalyst misc photoelectrochemical water splitting misc Mechanical engineering and machinery Deposition of FeOOH Layer on Ultrathin Hematite Nanoflakes to Promote Photoelectrochemical Water Splitting
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topic_title	TJ1-1570 Deposition of FeOOH Layer on Ultrathin Hematite Nanoflakes to Promote Photoelectrochemical Water Splitting hematite photoanode cocatalyst photoelectrochemical water splitting
topic	misc TJ1-1570 misc hematite photoanode misc cocatalyst misc photoelectrochemical water splitting misc Mechanical engineering and machinery
topic_unstemmed	misc TJ1-1570 misc hematite photoanode misc cocatalyst misc photoelectrochemical water splitting misc Mechanical engineering and machinery
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title	Deposition of FeOOH Layer on Ultrathin Hematite Nanoflakes to Promote Photoelectrochemical Water Splitting
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title_full	Deposition of FeOOH Layer on Ultrathin Hematite Nanoflakes to Promote Photoelectrochemical Water Splitting
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title_sort	deposition of feooh layer on ultrathin hematite nanoflakes to promote photoelectrochemical water splitting
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title_auth	Deposition of FeOOH Layer on Ultrathin Hematite Nanoflakes to Promote Photoelectrochemical Water Splitting
abstract	Hematite is one of the most promising photoanode materials for the study of photoelectrochemical (PEC) water splitting because of its ideal bandgap with sufficient visible light absorption and stability in alkaline electrolytes. However, owing to the intrinsically high electron-hole recombination, the PEC performance of hematite is still far below that expected. The efficient charge separation can be achieved via growth of FeOOH on hematite photoanode. In this study, hematite nanostructures were successfully grown on the surface of iron foil by the simple immersion deposition method and thermal oxidation treatment. Furthermore, cocatalyst FeOOH was successfully added to the hematite nanostructure surface to improve charge separation and charge transfer, and thus promote the photoelectrochemical water splitting. By utilizing the FeOOH overlayer as a cocatalyst, the photocurrent density of hematite exhibited a substantial 86% increase under 1.5 V<sub<RHE</sub<, while the onset potential showed an apparent shift towards the cathodic direction. This can be ascribed to the high reaction area for the nanostructured morphology and high electrocatalytic activity of FeOOH that enhanced the amount of photogenerated holes and accelerated the kinetics of water splitting.
abstractGer	Hematite is one of the most promising photoanode materials for the study of photoelectrochemical (PEC) water splitting because of its ideal bandgap with sufficient visible light absorption and stability in alkaline electrolytes. However, owing to the intrinsically high electron-hole recombination, the PEC performance of hematite is still far below that expected. The efficient charge separation can be achieved via growth of FeOOH on hematite photoanode. In this study, hematite nanostructures were successfully grown on the surface of iron foil by the simple immersion deposition method and thermal oxidation treatment. Furthermore, cocatalyst FeOOH was successfully added to the hematite nanostructure surface to improve charge separation and charge transfer, and thus promote the photoelectrochemical water splitting. By utilizing the FeOOH overlayer as a cocatalyst, the photocurrent density of hematite exhibited a substantial 86% increase under 1.5 V<sub<RHE</sub<, while the onset potential showed an apparent shift towards the cathodic direction. This can be ascribed to the high reaction area for the nanostructured morphology and high electrocatalytic activity of FeOOH that enhanced the amount of photogenerated holes and accelerated the kinetics of water splitting.
abstract_unstemmed	Hematite is one of the most promising photoanode materials for the study of photoelectrochemical (PEC) water splitting because of its ideal bandgap with sufficient visible light absorption and stability in alkaline electrolytes. However, owing to the intrinsically high electron-hole recombination, the PEC performance of hematite is still far below that expected. The efficient charge separation can be achieved via growth of FeOOH on hematite photoanode. In this study, hematite nanostructures were successfully grown on the surface of iron foil by the simple immersion deposition method and thermal oxidation treatment. Furthermore, cocatalyst FeOOH was successfully added to the hematite nanostructure surface to improve charge separation and charge transfer, and thus promote the photoelectrochemical water splitting. By utilizing the FeOOH overlayer as a cocatalyst, the photocurrent density of hematite exhibited a substantial 86% increase under 1.5 V<sub<RHE</sub<, while the onset potential showed an apparent shift towards the cathodic direction. This can be ascribed to the high reaction area for the nanostructured morphology and high electrocatalytic activity of FeOOH that enhanced the amount of photogenerated holes and accelerated the kinetics of water splitting.
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container_issue	3, p 387
title_short	Deposition of FeOOH Layer on Ultrathin Hematite Nanoflakes to Promote Photoelectrochemical Water Splitting
url	https://doi.org/10.3390/mi15030387 https://doaj.org/article/cc223ec5ba7041799ce3ba2984fd1507 https://www.mdpi.com/2072-666X/15/3/387 https://doaj.org/toc/2072-666X
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up_date	2024-07-03T14:48:49.269Z
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