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]

通讯作者：Wang, JC[1];Han, HJ[1];Wang, JC[2]

机构：[1]Xinxiang Univ, Sch Chem & Mat Engn, Xinxiang 453000, Henan, Peoples R China;[2]Henan Inst Sci & Technol, Coll Chem & Chem Engn, Xinxiang 453000, Henan, Peoples R China;[3]Xinxiang Univ, Henan Photoelectrocatalyt Mat & Micronano Applica, Xinxiang 450003, Henan, Peoples R China;[4]Zhengzhou Univ, Coll Chem, Zhengzhou 450000, Peoples R China

第一机构：新乡学院

通讯机构：[1]corresponding author), Henan Inst Sci & Technol, Coll Chem & Chem Engn, Xinxiang 453000, Henan, Peoples R China;[2]corresponding author), Zhengzhou Univ, Coll Chem, Zhengzhou 450000, Peoples R China.

年份：0

外文期刊名：NANO RESEARCH

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000784880200009)】；

基金：This work was supported by the financial supports of National Natural Science Foundation of China (Nos. 51802082 and 51903073), Natural Science Foundation of Henan Province (No. 212300410221), Program for Science & Technology Innovation Talents in Universities of Henan Province (No. 21HATIT016), Key Scientific Research Project of Colleges and Universities in Henan Province (Nos. 21A430030 and 20A150017), Key Scientific and Technological Project of Henan Province (Nos. 222102320100, 212102210473, and 212102210178), National College Student Innovantion and Entrepreneurship Training (No. 202110467024), and "Climbing" Project of Henan Institute of Science and Technology (No. 2018CG04).

语种：英文

外文关键词：CO2 reduction; WO3 plate; CuBi2O4; step-scheme (S-scheme); photocatalyst

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 mu mol/m(2) after 9 h visible light illumination (lambda > 400 nm), which was higher than those of two pure catalysts in CO2 photoreduction. The product yields slightly decreased in the 7(th) 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.