Sunil Kumar Sahoo , Athira P , Koustuv Ray , Dharmendra Pandey
{"title":"添加氧化铜形成 CuO/TiO2 和 CuO/ZnO 异质结，用于光催化 CO2 转化为甲醇","authors":"Sunil Kumar Sahoo , Athira P , Koustuv Ray , Dharmendra Pandey","doi":"10.1016/j.cplett.2024.141678","DOIUrl":null,"url":null,"abstract":"<div><div>Photocatalytic conversion of carbon dioxide (CO<sub>2</sub>) to value-added products is a promising route towards sustainability. In this work, gas phase CO<sub>2</sub> in presence of water vapor and UV irradiation source was converted to methanol using TiO<sub>2</sub>, ZnO, CuO/TiO<sub>2</sub> and CuO/ZnO photocatalysts. Characterization by physico-chemical, optical and First-principle based techniques revealed that CuO/TiO<sub>2</sub> possessed increased oxygen vacancy, highest average electron lifetime, transfer rate, injection efficiency and highest separation efficiency. The maximum methanol (∼28 %) yield of CuO/TiO<sub>2</sub> is ascribed due to combined effect of heterojunction formation and increment in surface oxygen vacancies by doping with CuO, acted as electron-trapping cocatalyst.</div></div>","PeriodicalId":273,"journal":{"name":"Chemical Physics Letters","volume":"856 ","pages":"Article 141678"},"PeriodicalIF":2.8000,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Addition of CuO to form CuO/TiO2 and CuO/ZnO heterojunctions for photocatalytic CO2 conversion to methanol\",\"authors\":\"Sunil Kumar Sahoo , Athira P , Koustuv Ray , Dharmendra Pandey\",\"doi\":\"10.1016/j.cplett.2024.141678\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Photocatalytic conversion of carbon dioxide (CO<sub>2</sub>) to value-added products is a promising route towards sustainability. In this work, gas phase CO<sub>2</sub> in presence of water vapor and UV irradiation source was converted to methanol using TiO<sub>2</sub>, ZnO, CuO/TiO<sub>2</sub> and CuO/ZnO photocatalysts. Characterization by physico-chemical, optical and First-principle based techniques revealed that CuO/TiO<sub>2</sub> possessed increased oxygen vacancy, highest average electron lifetime, transfer rate, injection efficiency and highest separation efficiency. The maximum methanol (∼28 %) yield of CuO/TiO<sub>2</sub> is ascribed due to combined effect of heterojunction formation and increment in surface oxygen vacancies by doping with CuO, acted as electron-trapping cocatalyst.</div></div>\",\"PeriodicalId\":273,\"journal\":{\"name\":\"Chemical Physics Letters\",\"volume\":\"856 \",\"pages\":\"Article 141678\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2024-10-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical Physics Letters\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0009261424006201\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Physics Letters","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0009261424006201","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Addition of CuO to form CuO/TiO2 and CuO/ZnO heterojunctions for photocatalytic CO2 conversion to methanol
Photocatalytic conversion of carbon dioxide (CO2) to value-added products is a promising route towards sustainability. In this work, gas phase CO2 in presence of water vapor and UV irradiation source was converted to methanol using TiO2, ZnO, CuO/TiO2 and CuO/ZnO photocatalysts. Characterization by physico-chemical, optical and First-principle based techniques revealed that CuO/TiO2 possessed increased oxygen vacancy, highest average electron lifetime, transfer rate, injection efficiency and highest separation efficiency. The maximum methanol (∼28 %) yield of CuO/TiO2 is ascribed due to combined effect of heterojunction formation and increment in surface oxygen vacancies by doping with CuO, acted as electron-trapping cocatalyst.
期刊介绍：
Chemical Physics Letters has an open access mirror journal, Chemical Physics Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review.
Chemical Physics Letters publishes brief reports on molecules, interfaces, condensed phases, nanomaterials and nanostructures, polymers, biomolecular systems, and energy conversion and storage.
Criteria for publication are quality, urgency and impact. Further, experimental results reported in the journal have direct relevance for theory, and theoretical developments or non-routine computations relate directly to experiment. Manuscripts must satisfy these criteria and should not be minor extensions of previous work.
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