光催化
催化作用
纳米片
材料科学
热液循环
化学工程
异质结
吸附
选择性
电子转移
碳氢化合物
纳米技术
化学
光化学
有机化学
光电子学
工程类
作者
Yingli Wang,Wenjie He,Jing Xiong,Zhiling Tang,Yuechang Wei,Xiong Wang,Hui Xu,Xiao Zhang,Zhen Zhao,Jian Liu
出处
期刊:Fuel
[Elsevier]
日期:2023-01-01
卷期号:331: 125719-125719
被引量:2
标识
DOI:10.1016/j.fuel.2022.125719
摘要
The hierarchical hollow structured photocatalysts of TiO2 nanosheet arrays-decorated In2O3 hexagonal nanotubes (core–shell structural In2O3@TiO2) were successfully fabricated by the in-situ hydrothermal method. Hierarchical hollow structure of In2O3@TiO2 photocatalysts with large specific surface area can improve the light harvesting efficiency and the adsorption capability for CO2 and H2O reactants. The internal electric field in In2O3@TiO2 photocatalysts provides the strong driving force for S-scheme electron transfer from conduction band of TiO2 to valence band of In2O3. The In2O3@TiO2 catalysts exhibited super performance for selectively photocatalytic CO2 conversion with H2O into hydrocarbon fuel (CH4) without sacrificial agent. Among the catalysts, In2O3@TiO2-10 catalyst has the largest yield (11.1 μmol g−1h−1) and selectivity (88.1 %) of CH4 product. Based on results of the characterizations, the mechanism of selective CO2 photoreduction is proposed: the surface enrichment of photogenerated electron induced by the S-scheme In2O3-TiO2 heterojunction is key-step for selective CO2 photoreduction into CH4. This work provides new ideas for the design and construction of high-efficient S-scheme photocatalysts.
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