A novel materials manganese cadmium sulfide/cobalt nitride for efficiently photocatalytic hydrogen evolution

Haiming Gong; Xuqiang Hao; Hongying Li; Zhiliang Jin

doi:10.1016/j.jcis.2020.11.088

A novel materials manganese cadmium sulfide/cobalt nitride for efficiently photocatalytic hydrogen evolution

J Colloid Interface Sci. 2021 Mar:585:217-228. doi: 10.1016/j.jcis.2020.11.088. Epub 2020 Nov 26.

Authors

Haiming Gong¹, Xuqiang Hao¹, Hongying Li¹, Zhiliang Jin²

Affiliations

¹ School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, PR China; Ningxia Key Laboratory of Solar Chemical Conversion Technology, North Minzu University, Yinchuan 750021, PR China; Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China.
² School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, PR China; Ningxia Key Laboratory of Solar Chemical Conversion Technology, North Minzu University, Yinchuan 750021, PR China; Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China. Electronic address: zl-jin@nun.edu.cn.

PMID: 33285460
DOI: 10.1016/j.jcis.2020.11.088

Abstract

The CoN which with excellent performance was introduced into Mn_0.2Cd_0.8S through simple electrostatic self-assembly for the first time, then the composite photocatalyst with low cost and high catalytic activity was prepared. The introduction of CoN improves the absorption intensity of catalyst to visible light. CoN accepts photo-induced electrons from Mn_0.2Cd_0.8S as an excellent electron acceptor in the form of active sites due to its suitable conduction band position and good conductivity. The surface interaction of composite photocatalyst formed by electrostatic self-assembly is strong, which is conducive to the directional transfer of photogenic carriers from Mn_0.2Cd_0.8S to CoN, greatly inhibits the recombination of photogenic carriers and improves the separation and the transfer rate of photogenic carriers. The introduction of CoN greatly improved the hydrogen production rate of photocatalyst up to 14.612 mmol g^-1 h^-1, it was 17.3 times that of pure MCS. This work provides inspiration for transition metal nitrides as cocatalysts in the sphere of photocatalytic splitting of water for hydrogen production.

Keywords: CoN; Electrostatic self-assembly; Mn(0.2)Cd(0.8)S; Photocatalytic H(2) evolution.