{"title":"Strong Metal-support Interaction (SMSI) Modulates d-orbital Centers to Promote Oxygen Reduction Reaction","authors":"Yunzhi Fu, Zhangmeng Liu, guiting Lin, Yayao Li, Runchao Zhou","doi":"10.1039/d4ta05972g","DOIUrl":null,"url":null,"abstract":"Hydrogen peroxide (H2O2) production through oxygen reduction mediated by semiconductor photocatalysts is a typical reaction for converting solar energy to chemical energy, in which the adsorption and activation of oxygen on the catalyst is the rate-controlling process. To improve the catalytic performance of the catalyst, attention must be paid to the charge transfer effect on molecular orbitals. Hence, carbon-nitrogen support structures have been found, Ag clusters can be stably anchored on carbon-nitrogen supports due to strong metal-support interaction (SMSI). The effect of SMSI and the difference in work function contribute to the antibonding orbitals of active oxygen-accepting Ag atom d-orbital electrons activated. The experimental results show that the formation of H2O2 follows two-electron transfer processes for oxygen reduction. The photoactivity of the system is 6410.7 μmol g-1·h-1 and the photochemical conversion is 1.06 %. These results provide a theoretical basis for further study of the effect of interfacial charge transfer on molecular orbitals.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":null,"pages":null},"PeriodicalIF":10.7000,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Chemistry A","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1039/d4ta05972g","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Hydrogen peroxide (H2O2) production through oxygen reduction mediated by semiconductor photocatalysts is a typical reaction for converting solar energy to chemical energy, in which the adsorption and activation of oxygen on the catalyst is the rate-controlling process. To improve the catalytic performance of the catalyst, attention must be paid to the charge transfer effect on molecular orbitals. Hence, carbon-nitrogen support structures have been found, Ag clusters can be stably anchored on carbon-nitrogen supports due to strong metal-support interaction (SMSI). The effect of SMSI and the difference in work function contribute to the antibonding orbitals of active oxygen-accepting Ag atom d-orbital electrons activated. The experimental results show that the formation of H2O2 follows two-electron transfer processes for oxygen reduction. The photoactivity of the system is 6410.7 μmol g-1·h-1 and the photochemical conversion is 1.06 %. These results provide a theoretical basis for further study of the effect of interfacial charge transfer on molecular orbitals.
期刊介绍:
The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.