Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection
This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ metho...
Ausführliche Beschreibung
Autor*in: |
Ullah, Sami [verfasserIn] Abbas, Kainaat [verfasserIn] Ali, Zulqurnain [verfasserIn] Atif, Muhammad [verfasserIn] Khalid, Waqas [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2023 |
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Schlagwörter: |
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Übergeordnetes Werk: |
Enthalten in: Materials chemistry and physics - New York, NY [u.a.] : Elsevier, 1983, 312 |
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Übergeordnetes Werk: |
volume:312 |
DOI / URN: |
10.1016/j.matchemphys.2023.128638 |
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Katalog-ID: |
ELV066184754 |
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520 | |a This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions. | ||
650 | 4 | |a Electrochemical sensing | |
650 | 4 | |a GO-CeO | |
650 | 4 | |a Heavy metals ion detection | |
650 | 4 | |a Mercury detection | |
700 | 1 | |a Abbas, Kainaat |e verfasserin |4 aut | |
700 | 1 | |a Ali, Zulqurnain |e verfasserin |4 aut | |
700 | 1 | |a Atif, Muhammad |e verfasserin |4 aut | |
700 | 1 | |a Khalid, Waqas |e verfasserin |0 (orcid)0000-0003-3109-4866 |4 aut | |
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10.1016/j.matchemphys.2023.128638 doi (DE-627)ELV066184754 (ELSEVIER)S0254-0584(23)01346-9 DE-627 ger DE-627 rda eng 540 530 VZ ASIEN DE-1a fid 6,25 ssgn 35.90 bkl 33.61 bkl 51.00 bkl Ullah, Sami verfasserin aut Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions. Electrochemical sensing GO-CeO Heavy metals ion detection Mercury detection Abbas, Kainaat verfasserin aut Ali, Zulqurnain verfasserin aut Atif, Muhammad verfasserin aut Khalid, Waqas verfasserin (orcid)0000-0003-3109-4866 aut Enthalten in Materials chemistry and physics New York, NY [u.a.] : Elsevier, 1983 312 Online-Ressource (DE-627)302719350 (DE-600)1491959-X (DE-576)096806435 nnns volume:312 GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-ASIEN SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 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_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 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_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.90 Festkörperchemie VZ 33.61 Festkörperphysik VZ 51.00 Werkstoffkunde: Allgemeines VZ AR 312 |
spelling |
10.1016/j.matchemphys.2023.128638 doi (DE-627)ELV066184754 (ELSEVIER)S0254-0584(23)01346-9 DE-627 ger DE-627 rda eng 540 530 VZ ASIEN DE-1a fid 6,25 ssgn 35.90 bkl 33.61 bkl 51.00 bkl Ullah, Sami verfasserin aut Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions. Electrochemical sensing GO-CeO Heavy metals ion detection Mercury detection Abbas, Kainaat verfasserin aut Ali, Zulqurnain verfasserin aut Atif, Muhammad verfasserin aut Khalid, Waqas verfasserin (orcid)0000-0003-3109-4866 aut Enthalten in Materials chemistry and physics New York, NY [u.a.] : Elsevier, 1983 312 Online-Ressource (DE-627)302719350 (DE-600)1491959-X (DE-576)096806435 nnns volume:312 GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-ASIEN SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 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_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 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_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.90 Festkörperchemie VZ 33.61 Festkörperphysik VZ 51.00 Werkstoffkunde: Allgemeines VZ AR 312 |
allfields_unstemmed |
10.1016/j.matchemphys.2023.128638 doi (DE-627)ELV066184754 (ELSEVIER)S0254-0584(23)01346-9 DE-627 ger DE-627 rda eng 540 530 VZ ASIEN DE-1a fid 6,25 ssgn 35.90 bkl 33.61 bkl 51.00 bkl Ullah, Sami verfasserin aut Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions. Electrochemical sensing GO-CeO Heavy metals ion detection Mercury detection Abbas, Kainaat verfasserin aut Ali, Zulqurnain verfasserin aut Atif, Muhammad verfasserin aut Khalid, Waqas verfasserin (orcid)0000-0003-3109-4866 aut Enthalten in Materials chemistry and physics New York, NY [u.a.] : Elsevier, 1983 312 Online-Ressource (DE-627)302719350 (DE-600)1491959-X (DE-576)096806435 nnns volume:312 GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-ASIEN SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 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_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 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_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.90 Festkörperchemie VZ 33.61 Festkörperphysik VZ 51.00 Werkstoffkunde: Allgemeines VZ AR 312 |
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10.1016/j.matchemphys.2023.128638 doi (DE-627)ELV066184754 (ELSEVIER)S0254-0584(23)01346-9 DE-627 ger DE-627 rda eng 540 530 VZ ASIEN DE-1a fid 6,25 ssgn 35.90 bkl 33.61 bkl 51.00 bkl Ullah, Sami verfasserin aut Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions. Electrochemical sensing GO-CeO Heavy metals ion detection Mercury detection Abbas, Kainaat verfasserin aut Ali, Zulqurnain verfasserin aut Atif, Muhammad verfasserin aut Khalid, Waqas verfasserin (orcid)0000-0003-3109-4866 aut Enthalten in Materials chemistry and physics New York, NY [u.a.] : Elsevier, 1983 312 Online-Ressource (DE-627)302719350 (DE-600)1491959-X (DE-576)096806435 nnns volume:312 GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-ASIEN SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 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_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 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_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.90 Festkörperchemie VZ 33.61 Festkörperphysik VZ 51.00 Werkstoffkunde: Allgemeines VZ AR 312 |
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10.1016/j.matchemphys.2023.128638 doi (DE-627)ELV066184754 (ELSEVIER)S0254-0584(23)01346-9 DE-627 ger DE-627 rda eng 540 530 VZ ASIEN DE-1a fid 6,25 ssgn 35.90 bkl 33.61 bkl 51.00 bkl Ullah, Sami verfasserin aut Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions. Electrochemical sensing GO-CeO Heavy metals ion detection Mercury detection Abbas, Kainaat verfasserin aut Ali, Zulqurnain verfasserin aut Atif, Muhammad verfasserin aut Khalid, Waqas verfasserin (orcid)0000-0003-3109-4866 aut Enthalten in Materials chemistry and physics New York, NY [u.a.] : Elsevier, 1983 312 Online-Ressource (DE-627)302719350 (DE-600)1491959-X (DE-576)096806435 nnns volume:312 GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-ASIEN SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 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_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 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_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.90 Festkörperchemie VZ 33.61 Festkörperphysik VZ 51.00 Werkstoffkunde: Allgemeines VZ AR 312 |
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Ullah, Sami @@aut@@ Abbas, Kainaat @@aut@@ Ali, Zulqurnain @@aut@@ Atif, Muhammad @@aut@@ Khalid, Waqas @@aut@@ |
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Ullah, Sami ddc 540 fid ASIEN ssgn 6,25 bkl 35.90 bkl 33.61 bkl 51.00 misc Electrochemical sensing misc GO-CeO misc Heavy metals ion detection misc Mercury detection Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection |
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540 530 VZ ASIEN DE-1a fid 6,25 ssgn 35.90 bkl 33.61 bkl 51.00 bkl Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection Electrochemical sensing GO-CeO Heavy metals ion detection Mercury detection |
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enhancing mercury (ii) ion detection with graphene oxide-cerium oxide nanocomposites: enzyme free ultrasensitive detection |
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Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection |
abstract |
This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions. |
abstractGer |
This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions. |
abstract_unstemmed |
This study discusses how gold (Au) electrodes were modified by immobilizing graphene oxide-cerium oxide (GO-CeO2) nanocomposite to detect mercury (II) (Hg2+) ions selectively. The GO-CeO2 nanocomposite was prepared using the sonochemical method after synthesis of GO through a modifier Hummers’ method and CeO2 via a coprecipitation technique. The structural, morphological, and optical characteristics of the nanocomposite were assessed using X-ray diffraction (XRD), transmission electron microscopy (TEM), and diffuse reflectance spectroscopy (DRS), respectively. Cyclic voltammetry (CV) provided the selective electrochemical response for Hg2+ among different divalent metallic ions. Scan rates (ranging from 5 to 300 mV/s) confirmed the stability of the modified electrode. It was suggested that the Hg2+ ion and modified Au electrode interacted through both diffusion-controlled and surface-controlled mechanisms, with diffusion-controlled interaction being the dominant one. Differential pulse voltammetry (DPV) was chosen to assess sensitivity by conducting concentration profiles in the range of 10 fM to 1 mM. The calculation yielded a limit of detection of 1.87 fM (fM). The developed sensor represents a promising platform for the ultrasensitive detection of Hg2+ ions. |
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Enhancing mercury (II) ion detection with graphene oxide-cerium oxide nanocomposites: Enzyme free ultrasensitive detection |
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|
score |
7.4004993 |