文献类型：期刊文献

英文题名：Controllable synthesized step-scheme heterojunction of CuBi2O4 decorated WO3 plates for visible-light-driven CO2 reduction

作者：Shi, Weina[1,3]; Wang, Ji-Chao[2,4]; Guo, Xiaowei[1,3]; Qiao, Xiu[2]; Liu, Fang[1]; Li, Renlong[2]; Zhang, Wanqing[2]; Hou, Yuxia[2]; Han, Huijuan[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; [4] College of Chemistry, Zhengzhou University, Zhengzhou, 450000, 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;[2]College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, 453000, China

年份：2022

卷号：15

期号：7

起止页码：5962-5969

外文期刊名：Nano Research

收录：EI(收录号：20221712008142);Scopus(收录号：2-s2.0-85128465361)

语种：英文

外文关键词：Charge transfer - Catalysts - Heterojunctions - Copper compounds - Electron spin resonance spectroscopy - Tungsten compounds - Magnetic moments - X ray photoelectron spectroscopy - Carbon dioxide - Light - Plates (structural components)

摘要：Rational design and construction of step-scheme (S-scheme) photocatalyst has received much attention in the field of CO2 reduction because of its great potential to solve the current energy and environmental crises. In this study, a series of plate-like WO3/CuBi2O4 (WO/CBO) photocatalysts were synthesized. The CO and CH4 yields over optimal composite reached 1, 115.8 and 67.2 μmol/m2 after 9 h visible light illumination (λ > 400 nm), which was higher than those of two pure catalysts in CO2 photoreduction. The product yields slightly decreased in the 7th cycling. Besides, the staggered band structure of heterojunction was characterized by diffuse reflectance spectroscopy (DRS) and valence band-X-ray photoelectron spectroscopy (VB-XPS), and a S-scheme charge transfer mechanism was verified by detecting electron spin resonance (ESR) and XPS result about surface composition of WO/CBO catalyst in dark or light. This work may be useful for rational designing of S-scheme photocatalyst and provides some illuminating insights into the S-scheme transfer mechanism. [Figure not available: see fulltext.] ? 2022, Tsinghua University Press.