{"title":"利用 rGO-Bi2S3/CuO 异质结光催化剂还原二氧化碳，提高甲醇产量","authors":"Arindam Mandal, Guruprasad Bhattacharya, Kajari Kargupta","doi":"10.1557/s43578-024-01352-2","DOIUrl":null,"url":null,"abstract":"<p>A visible light-induced rGO-Bi<sub>2</sub>S<sub>3</sub>/CuO S-scheme heterojunction photocatalyst is explored for the production of methanol and formic acid through photocatalytic CO<sub>2</sub> reduction. In this work, the effect of CuO loading on rGO-Bi<sub>2</sub>S<sub>3</sub> nano-hollow flower composite are investigated to improve the yield and selectivity of methanol production. The synthesised rGO-Bi<sub>2</sub>S<sub>3</sub>/CuO nanocomposite, being a highly efficient and robust photocatalyst, exhibits the maximum methanol yield of 423.52 μmol g<sub>cat.</sub><sup>−1</sup> h<sup>−1</sup> along with formic acid. CuO loading on rGO-Bi<sub>2</sub>S<sub>3</sub> is responsible for achieving the maximum photocatalytic activity of the rGO-Bi<sub>2</sub>S<sub>3</sub>/CuO photocatalyst, the narrowest band gap, the lowest recombination rate of electron–hole pairs, and the increased specific surface area for CO<sub>2</sub> capture among all the related photocatalysts, rGO-Bi<sub>2</sub>S<sub>3</sub>, pristine Bi<sub>2</sub>S<sub>3</sub>, and Bi<sub>2</sub>S<sub>3</sub>/CuO nanocomposite. The selectivity of methanol is improved to 98.6% by the rGO-Bi<sub>2</sub>S<sub>3</sub>/CuO heterojunction photocatalyst. The absorption edge (652.4 nm) of the rGO-Bi<sub>2</sub>S<sub>3</sub>/CuO photocatalyst clearly exhibits outstanding visible light absorption and enhanced photo carrier transportation power.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\n","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"23 1","pages":""},"PeriodicalIF":2.7000,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced yield of methanol using rGO-Bi2S3/CuO heterojunction photocatalyst for CO2 reduction\",\"authors\":\"Arindam Mandal, Guruprasad Bhattacharya, Kajari Kargupta\",\"doi\":\"10.1557/s43578-024-01352-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>A visible light-induced rGO-Bi<sub>2</sub>S<sub>3</sub>/CuO S-scheme heterojunction photocatalyst is explored for the production of methanol and formic acid through photocatalytic CO<sub>2</sub> reduction. In this work, the effect of CuO loading on rGO-Bi<sub>2</sub>S<sub>3</sub> nano-hollow flower composite are investigated to improve the yield and selectivity of methanol production. The synthesised rGO-Bi<sub>2</sub>S<sub>3</sub>/CuO nanocomposite, being a highly efficient and robust photocatalyst, exhibits the maximum methanol yield of 423.52 μmol g<sub>cat.</sub><sup>−1</sup> h<sup>−1</sup> along with formic acid. CuO loading on rGO-Bi<sub>2</sub>S<sub>3</sub> is responsible for achieving the maximum photocatalytic activity of the rGO-Bi<sub>2</sub>S<sub>3</sub>/CuO photocatalyst, the narrowest band gap, the lowest recombination rate of electron–hole pairs, and the increased specific surface area for CO<sub>2</sub> capture among all the related photocatalysts, rGO-Bi<sub>2</sub>S<sub>3</sub>, pristine Bi<sub>2</sub>S<sub>3</sub>, and Bi<sub>2</sub>S<sub>3</sub>/CuO nanocomposite. The selectivity of methanol is improved to 98.6% by the rGO-Bi<sub>2</sub>S<sub>3</sub>/CuO heterojunction photocatalyst. The absorption edge (652.4 nm) of the rGO-Bi<sub>2</sub>S<sub>3</sub>/CuO photocatalyst clearly exhibits outstanding visible light absorption and enhanced photo carrier transportation power.</p><h3 data-test=\\\"abstract-sub-heading\\\">Graphical Abstract</h3>\\n\",\"PeriodicalId\":16306,\"journal\":{\"name\":\"Journal of Materials Research\",\"volume\":\"23 1\",\"pages\":\"\"},\"PeriodicalIF\":2.7000,\"publicationDate\":\"2024-05-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Research\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1557/s43578-024-01352-2\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Research","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1557/s43578-024-01352-2","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Enhanced yield of methanol using rGO-Bi2S3/CuO heterojunction photocatalyst for CO2 reduction
A visible light-induced rGO-Bi2S3/CuO S-scheme heterojunction photocatalyst is explored for the production of methanol and formic acid through photocatalytic CO2 reduction. In this work, the effect of CuO loading on rGO-Bi2S3 nano-hollow flower composite are investigated to improve the yield and selectivity of methanol production. The synthesised rGO-Bi2S3/CuO nanocomposite, being a highly efficient and robust photocatalyst, exhibits the maximum methanol yield of 423.52 μmol gcat.−1 h−1 along with formic acid. CuO loading on rGO-Bi2S3 is responsible for achieving the maximum photocatalytic activity of the rGO-Bi2S3/CuO photocatalyst, the narrowest band gap, the lowest recombination rate of electron–hole pairs, and the increased specific surface area for CO2 capture among all the related photocatalysts, rGO-Bi2S3, pristine Bi2S3, and Bi2S3/CuO nanocomposite. The selectivity of methanol is improved to 98.6% by the rGO-Bi2S3/CuO heterojunction photocatalyst. The absorption edge (652.4 nm) of the rGO-Bi2S3/CuO photocatalyst clearly exhibits outstanding visible light absorption and enhanced photo carrier transportation power.
期刊介绍：
Journal of Materials Research (JMR) publishes the latest advances about the creation of new materials and materials with novel functionalities, fundamental understanding of processes that control the response of materials, and development of materials with significant performance improvements relative to state of the art materials. JMR welcomes papers that highlight novel processing techniques, the application and development of new analytical tools, and interpretation of fundamental materials science to achieve enhanced materials properties and uses. Materials research papers in the following topical areas are welcome.
• Novel materials discovery
• Electronic, photonic and magnetic materials
• Energy Conversion and storage materials
• New thermal and structural materials
• Soft materials
• Biomaterials and related topics
• Nanoscale science and technology
• Advances in materials characterization methods and techniques
• Computational materials science, modeling and theory
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