H3PMo12O40@ZIF-67-derived CoMoC/ZnIn2S4 Schottky heterojunction for enhanced photocatalytic hydrogen evolution.

In this work, a novel CMC/ZIS Schottky heterojunction photocatalytic material was synthesized by solvothermal complexation of the H 3 PMo 12 O 40 @ZIF-67 derived precursors with ZnIn 2 S 4. According to the experimental findings, the 5% CMC/ZIS composite photocatalytic material outperformed the pure ZIS catalyst in terms of photoelectric performance and visible light responsiveness. The 5% CMC/ZIS Schottky heterojunction catalyst presents a hydrogen production rate of 2232 μmol g−1 h−1, which is about five times that of the pure ZIS. The high photocatalytic activity of the 5% CMC/ZIS composite can be attributed to the narrowed band gap and the formation of a Schottky heterojunction. The composite exhibits enhanced visible light absorption capability and faster-photogenerated electron separation efficiency. The study highlights the advantages of the integration of MOF derivatives with ZnIn 2 S 4 for the preparation of composite photocatalysts with improved hydrogen production activities. In this work, a novel CMC/ZIS composite photocatalytic material was synthesized by high-temperature annealing of cobalt-molybdenum bimetallic carbide using ZIF-67 and PMo 12 as the precursors, which was then composited with indium zinc sulfide by solvothermal method. According to the experimental findings, the 5% CMC/ZIS composite photocatalytic material outperformed the pure ZIS catalyst in terms of photoelectric performance and visible light responsiveness. Additionally, it produced H 2 at a rate of up to 2232 μmol g−1 h−1, which is about five times higher than the rate of the pure ZIS. [Display omitted] • H 3 PMo 12 O 40 @ZIF-67 was derived to cobalt-molybdenum bimetallic carbides. • ZnIn 2 S 4 nanosheets were successfully grown on CoMoC dodecahedra. • The CoMoC/ZnIn 2 S 4 composites formed a Schottky heterojunction. • The composite shows faster photogenerated electron separation efficiency. • The highest H 2 production rate of CoMo(20)C/ZnIn 2 S 4 is 2232 μmol g−1 h−1. [ABSTRACT FROM AUTHOR]