Cristian Hessel, Lauren Moreti, Victor Yoiti Yukuhiro, Pablo S. Fernández, Elton Sitta
{"title":"BiVO4:Zr,Mo/Pt 薄膜上的甲醇、乙二醇和甘油光电化学氧化反应:比较研究","authors":"Cristian Hessel, Lauren Moreti, Victor Yoiti Yukuhiro, Pablo S. Fernández, Elton Sitta","doi":"10.1016/j.electacta.2024.145300","DOIUrl":null,"url":null,"abstract":"The green H<sub>2</sub> production plays a key role in the energy transition, however it still needs improvements to be applied in a large scale. The water oxidation reaction, as an anodic process to provide both protons and electrons for H<sub>2</sub> production, possesses kinetic limitations. Therefore, the use of an alternative process like the oxidation of biomass-derivative species is extremely desired to replace water oxidation during H<sub>2</sub> production. In this work, we provide a comparative study of different small organic molecules (methanol, ethylene glycol (EG), and glycerol) as alternatives to water oxidation at pristine BiVO<sub>4</sub>, Mo-Zr dopped BiVO<sub>4</sub>, and Pt co-catalyst BiVO<sub>4</sub> photoanodes in neutral media. While the band energy diagram and surface morphology are similar for the distinct materials, the presence of Zr-Mo increases the charge carriers density. The presence of Pt acts as co-catalyst for the organic molecules. Regardless of the material employed, the activity order for each organic molecule reaction was: <em>j</em><sub>water</sub> <em>< j</em><sub>methanol</sub> < <em>j</em><sub>EG</sub> < <em>j</em><sub>glycerol</sub> affeered by both linear potential sweep and chronoamperometry at 1.23 V vs RHE. The presence of both Zr-Mo and Pt increases the photoactivity for the alcohol's oxidation, however the presence of Pt is more advantageous for glycerol oxidation than for other species, maintaining 80% of activity after 24 h electrolysis. The reactivity of alcohols is tentatively explained by means of distinct size radicals formation.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":null,"pages":null},"PeriodicalIF":5.5000,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Methanol, Ethylene Glycol, and Glycerol Photoelectrochemical Oxidation Reactions on BiVO4:Zr,Mo/Pt Thin Films: A Comparative Study\",\"authors\":\"Cristian Hessel, Lauren Moreti, Victor Yoiti Yukuhiro, Pablo S. Fernández, Elton Sitta\",\"doi\":\"10.1016/j.electacta.2024.145300\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The green H<sub>2</sub> production plays a key role in the energy transition, however it still needs improvements to be applied in a large scale. The water oxidation reaction, as an anodic process to provide both protons and electrons for H<sub>2</sub> production, possesses kinetic limitations. Therefore, the use of an alternative process like the oxidation of biomass-derivative species is extremely desired to replace water oxidation during H<sub>2</sub> production. In this work, we provide a comparative study of different small organic molecules (methanol, ethylene glycol (EG), and glycerol) as alternatives to water oxidation at pristine BiVO<sub>4</sub>, Mo-Zr dopped BiVO<sub>4</sub>, and Pt co-catalyst BiVO<sub>4</sub> photoanodes in neutral media. While the band energy diagram and surface morphology are similar for the distinct materials, the presence of Zr-Mo increases the charge carriers density. The presence of Pt acts as co-catalyst for the organic molecules. Regardless of the material employed, the activity order for each organic molecule reaction was: <em>j</em><sub>water</sub> <em>< j</em><sub>methanol</sub> < <em>j</em><sub>EG</sub> < <em>j</em><sub>glycerol</sub> affeered by both linear potential sweep and chronoamperometry at 1.23 V vs RHE. The presence of both Zr-Mo and Pt increases the photoactivity for the alcohol's oxidation, however the presence of Pt is more advantageous for glycerol oxidation than for other species, maintaining 80% of activity after 24 h electrolysis. The reactivity of alcohols is tentatively explained by means of distinct size radicals formation.\",\"PeriodicalId\":305,\"journal\":{\"name\":\"Electrochimica Acta\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.5000,\"publicationDate\":\"2024-10-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Electrochimica Acta\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1016/j.electacta.2024.145300\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ELECTROCHEMISTRY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrochimica Acta","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.electacta.2024.145300","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
Methanol, Ethylene Glycol, and Glycerol Photoelectrochemical Oxidation Reactions on BiVO4:Zr,Mo/Pt Thin Films: A Comparative Study
The green H2 production plays a key role in the energy transition, however it still needs improvements to be applied in a large scale. The water oxidation reaction, as an anodic process to provide both protons and electrons for H2 production, possesses kinetic limitations. Therefore, the use of an alternative process like the oxidation of biomass-derivative species is extremely desired to replace water oxidation during H2 production. In this work, we provide a comparative study of different small organic molecules (methanol, ethylene glycol (EG), and glycerol) as alternatives to water oxidation at pristine BiVO4, Mo-Zr dopped BiVO4, and Pt co-catalyst BiVO4 photoanodes in neutral media. While the band energy diagram and surface morphology are similar for the distinct materials, the presence of Zr-Mo increases the charge carriers density. The presence of Pt acts as co-catalyst for the organic molecules. Regardless of the material employed, the activity order for each organic molecule reaction was: jwater< jmethanol < jEG < jglycerol affeered by both linear potential sweep and chronoamperometry at 1.23 V vs RHE. The presence of both Zr-Mo and Pt increases the photoactivity for the alcohol's oxidation, however the presence of Pt is more advantageous for glycerol oxidation than for other species, maintaining 80% of activity after 24 h electrolysis. The reactivity of alcohols is tentatively explained by means of distinct size radicals formation.
期刊介绍:
Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.