Fabrication of layered Fe2P-Cd0.5Zn0.5S nanoparticles with a reverse heterojunction for enhanced photocatalytic hydrogen evolution

Zhibin Liang; Xinfa Dong

doi:10.1016/j.jcis.2020.09.042

Fabrication of layered Fe₂P-Cd_0.5Zn_0.5S nanoparticles with a reverse heterojunction for enhanced photocatalytic hydrogen evolution

J Colloid Interface Sci. 2021 Feb 1:583:196-203. doi: 10.1016/j.jcis.2020.09.042. Epub 2020 Sep 22.

Authors

Zhibin Liang¹, Xinfa Dong²

Affiliations

¹ School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510640, PR China.
² School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510640, PR China. Electronic address: cexfdong@scut.edu.cn.

PMID: 33002692
DOI: 10.1016/j.jcis.2020.09.042

Abstract

In this work, a novel two-dimensional (2D) layered Fe₂P modified Cd_0.5Zn_0.5S (CZS) nanoparticles composites were successfully developed by an environmentally friendly solvothermal method. The Fe₂P-CZS photocatalysts were used for noble-metal-free photocatalytic H₂ generation under visible light. The rate of H₂ evolution of 13 wt% Fe₂P-CZS was 24.84 mmol·g^-1·h^-1, which was 37.6 times that of CZS (0.66 mmol·g^-1·h^-1). The formation of the 2D-0D reverse heterojunction in the Fe₂P-CZS composite photocatalyst improved the transport and separation of photogenerated electron-hole pairs and optimized the kinetics of hydrogen evolution. Compared with Fe₂P particles, the layered Fe₂P cocatalysts had higher conductivity and lower hydrogen evolution overpotential.

Keywords: Cd(0.5)Zn(0.5)S; H(2) evolution; Layered Fe(2)P; Reverse heterojunction.