光催化
金属
量子产额
材料科学
产量(工程)
共价键
电子转移
催化作用
Atom(片上系统)
光化学
纳米技术
化学工程
化学
有机化学
光学
冶金
荧光
物理
工程类
计算机科学
嵌入式系统
作者
Honghui Pan,Xiaoguang Wang,Zhiwei Xiong,Minghui Sun,Muthu Murugananthan,Yanrong Zhang
标识
DOI:10.1016/j.envres.2021.111176
摘要
A binary component catalyst consists of single atoms (SAs– Pt and Au) anchored on self-doped TiO2 nanotubes (TNTs), was developed for photocatalytic CO2 reduction. The defects introduced TNTs substrate was stabilized with atomic Pt and Au via strong metal support interactions (MSI), due to which, the covalent interactions facilitated an effective transfer of photo-generated electrons from the defective sites to the SAs, and in turn an enhanced separation of electron–hole pairs and charge-carrier transmission. The Pt–Au/R-TNTs with 0.33 wt% of SA metals, exhibited a maximum of 149 times higher photocatalytic performance than unmodified R-TNT and a total apparent quantum yield (AQY) of 17.9%, in which the yield of CH4 and C2H6 reached to 360.0 and 28.8 μmol g−1 h−1, respectively. The metals loading shifted the oxidation path of H2O from •OH generation into O2 evolution, that inhibited the self-oxidization of the photocatalyst.
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