Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8943399 | Materials Letters | 2018 | 10 Pages |
Abstract
A unique three dimensional Ag/Ag3PO4/CeO2 with Z-scheme structure was constructed and applied in photocatalytic reduction of CO2 under visible light, demonstrating superior performance in yielding CH3OH (42.5â¯Î¼molâ¯gcatâ1) and C2H5OH (31.5â¯Î¼molâ¯gcatâ1). During the photocatalysis, CeO2 microspheres provide abundant pores for loading Ag/Ag3PO4 nanoparticles, ensuring the stability of the light sensitizers. Furthermore, there is an inner electric field formed between Ag3PO4 and CeO2 with Ag working as eâ-h+ quenching bridge. Benefited from the high conductivity of Ag, the combination between holes in CeO2 VB and electrons in Ag3PO4 CB can be promoted, enabling the formation of Z-scheme structure and leaving plenty of electrons in CeO2 host for CO2 reduction. Moreover, CeO2 as a basic metal oxide can transform inert linear CO2 to b-HCO3â and b-CO32â species to decline reductive potential of CO2.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Wuwan Xiong, Weili Dai, Xu Hu, Lixia Yang, Tengyao Wang, Yuancheng Qin, Xubiao Luo, Jianping Zou,