High-efficiency photocatalyst based on a MoSiGeN4/SiC heterojunction

Xin Huang, Liang Xu, Bin Xiao, Kejun Dong, Kai Yang, Liangxing Li, Ling-Ling Wang

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

The construction of an environmentally friendly and efficient photocatalyst for water splitting and hydrogen evolution can effectively alleviate the pressure of current energy consumption and environmental pollution. Herein, by using first-principles calculations, the MoSiGeN4/SiC heterojunction was studied as a potential photocatalyst. According to different stacking methods, 12 kinds of configurations of such heterojunction with high symmetry were constructed, among which four kinds show excellent stability and hence were further studied. The results show that such heterojunction is Z-scheme heterojunction, which not only has good light absorption efficiency, but also shows excellent performance of photocatalytic water splitting for hydrogen evolution. In addition, one of the stable configurations shows better photocatalytic hydrogen evolution performance than precious metal catalyst Pt, and the Gibbs free energy is only −0.039 eV. It is expected to prepare a hydrogen evolution catalyst with excellent performance. Further, the possible mechanism responsible for the excellent properties of MoSiGeN4/SiC heterojunction in photocatalysis has been revealed. Our research further enriches the theoretical research genealogy of MA2X4 family materials and guides the direction for further rational design of photocatalysts.
Original languageEnglish
Pages (from-to)16404-16417
Number of pages14
JournalJournal of Materials Science
Volume57
Issue number34
DOIs
Publication statusPublished - 2022

Fingerprint

Dive into the research topics of 'High-efficiency photocatalyst based on a MoSiGeN4/SiC heterojunction'. Together they form a unique fingerprint.

Cite this