Ipolymer Cd3(C3N3S3)2/Zn3(C3N3S3)2 S-scheme heterojunction enhances photocatalytic H2 production
The preparation of S-scheme heterojunctions has attracted considerable attention in the academic community as a highly effective approach to enhance the separation and migration of electrons and holes,thereby significantly improving the catalytic efficiency of photocatalysts.In this work,a novel S-scheme ipolymer heterojunction photocatalyst,Cd3(C3N3S3)2/Zn3(C3N3S3)2(CdTMT/ZnTMT),which synergy with π-conjugate system,was synthesized using an innovative in-situ hydrothermal method.Through a series of rigorous characterization tests,the formation of an S-scheme hetero-junction between CdTMT and ZnTMT was confirmed.Particular emphasis is placed on the effective enhancement of photocatalytic activity of photocatalysts through π-conjugated orbitals and built-in electric field after combining double-organic conjugated polymer-shaped ZnTMT and CdTMT.Per-formance tests that show the photocatalytic hydrogen evolution performance of the composite was significantly boosted to an impressive 45.24 mmol·g-1·h-1,which is 215.43 times that of single cata-lyst ZnTMT and 1.76 times that of CdTMT.Finally,this paper discusses the possibility and develop-ment prospect of double polymer to construct S-scheme heterojunctions to improve the activity of photocatalysts.
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