Construction of a Stable Cds/N-Nb2o5 Z-Scheme Heterojunction for Efficient Photocatalytic Conversion of Co2

Abstract

​ Photocatalysis technology enables the conversion of CO2 into valuable carbon compounds. In this study, a stable CdS/N-Nb2O5 Z-scheme heterojunction was successfully constructed, which exhibited exceptional photocatalytic performance with the CdS loading of 15%, achieving a maximum CH4 and CO yield of 18.53 and 6.26 μmol/g/h, respectively. The enhanced performance and stability of the photocatalytic system can be attributed to the successful construction of a CdS/N-Nb2O5 Z-scheme heterojunction, using the doped N atom act as an electronic bridge to effectively regulate the directional separation of photo-generated electrons and holes. This work provides a novel design and synthesis of stable CdS-containing Z-scheme heterojunction composite catalyst for highly photocatalytic CO2 conversion, holding great significance for high-active catalyst development and clean energy production.

Keywords: niobium pentoxide, cadmium sulfide, photocatalytic CO2 reduction, Z-scheme heterojunction