文献类型：期刊文献

英文题名：Ultra-fast construction of CuBi2O4 films supported Bi2O3 with dominant (0 2 0) facets for efficient CO2 photoreduction in water vapor

作者：Shi, Weina[1,3]; Wang, Ji-Chao[2]; Guo, Xiaowei[1,3]; Tian, Hong-Ling[2]; Zhang, Wanqing[2]; Gao, Huiling[2]; Han, Huijuan[2]; Li, Renlong[2]; Hou, Yuxia[2]

机构：[1] School of Chemistry and Materials Engineering, Xinxiang University, Xinxiang, 453000, China; [2] College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, 453000, China; [3] Henan Photoelectrocatalytic Material and Micro-Nano Application Technology Academician Workstation, Xinxiang University, Xinxiang, 450003, China

第一机构：新乡学院

通讯机构：[2]College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, 453000, China

年份：2022

卷号：890

外文期刊名：Journal of Alloys and Compounds

收录：EI(收录号：20213810911898);Scopus(收录号：2-s2.0-85115022124)

语种：英文

外文关键词：Copper compounds - Light - Composite films - Spray pyrolysis - Charge transfer - Irradiation - Thin films - Water vapor - Carbon dioxide - Molecules - Photocatalytic activity

摘要：CuBi2O4/Bi2O3 thin film was synthesized on the commercial glass by a spray pyrolysis-calcination method. The monoclinic phase Bi2O3 with dominant (0 2 0) facets was grown on the surface of tetragonal phase CuBi2O4 by the temperature control of spraying process. Photocatalytic activities of the synthesized materials for CO2 reduction were measured in the presence of water vapor under visible light irradiation (λ > 400 nm). The CO, CH4 and O2 yields of the optimal composite film reached 247.62, 119.27 and 418.00 μmol/m2 after 12 h of irradiation. The composite film resisted physical damage and showed good photocatalytic activity in the cycling tests. Moreover, it was found that the types of main products changed with the light intensity and their yields varied with the light wavelength. The exposed (0 2 0) facets efficiently improved the adsorbed ability for H2O molecules. Meanwhile, the hydrophobicity of the film surface ensured that the adsorbed sites of CO2 were unoccupied by abundant H2O molecules. The S-scheme charge transfer mechanism was further confirmed by the interlaced band alignment of the CuBi2O4/Bi2O3 heterostructure and the controlled experiment with different light conditions. The results gained in this report may open up an avenue to design advanced S-scheme heterostructures with suitable transitional-metal oxides for photoreduction CO2 to solar fuels. ? 2021 Elsevier B.V.