We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Controllable synthesized step-scheme heterojunction of CuBi<sub>2</sub>O<sub>4</sub> decorated WO<sub>3</sub> plates for visible-light-driven CO<sub>2</sub> reduction.
- Authors
Shi, Weina; Wang, Ji-Chao; Guo, Xiaowei; Qiao, Xiu; Liu, Fang; Li, Renlong; Zhang, Wanqing; Hou, Yuxia; Han, Huijuan
- Abstract
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.
- Publication
Nano Research, 2022, Vol 15, Issue 7, p5962
- ISSN
1998-0124
- Publication type
Article
- DOI
10.1007/s12274-022-4271-0