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240916s2024 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.4c02510
|2 doi
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|a pubmed24n1535.xml
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|a eng
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|a Guo, Wenlong
|e verfasserin
|4 aut
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|a Photoelectrochemical Synthesis of Hydrogen Peroxide from Saline Water via the Two-Electron Water Oxidation Reaction
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 13.09.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a Hydrogen peroxide (H2O2) production on the anode is more valuable than oxygen and chlorine evolution for photoelectrochemical saline water splitting. In this work, by the introduction of bicarbonate (HCO3-), H2O2 is produced from saline water (2 M KHCO3 + 0.5 M NaCl aqueous solution) via the two-electron water oxidation reaction by a photoanode of bismuth vanadate (BiVO4). Furthermore, the Faradaic efficiency (FE) and accumulation for H2O2 are improved by coating antimony tetroxide (Sb2O4) on BiVO4. A H2O2 FE of 26% at 1.54 V vs RHE is obtained by Sb2O4/BiVO4 and 49 ppm of H2O2 is accumulated after a 135 min chronoamperometry. Similar to that in KHCO3 pure water solution, infrared spectroscopy and electrochemical analysis confirm that HCO3- plays a surface-mediating role in the formation of H2O2 in KHCO3 saline water solution. The presence of HCO3- in the electrolyte is able to not only increase the photocurrent density but also effectively inhibit the chlorine evolution reaction
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|a Journal Article
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|a Li, Meng
|e verfasserin
|4 aut
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|a Wang, Shanshan
|e verfasserin
|4 aut
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| 700 |
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|a He, Yu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhou, Yun
|e verfasserin
|4 aut
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|a Lian, Xin
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g (2024) vom: 13. Sept.
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g year:2024
|g day:13
|g month:09
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|u http://dx.doi.org/10.1021/acs.langmuir.4c02510
|3 Volltext
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