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Photocatalytic Hydrogen Production Properties of AuCu/CaIn2S4 Composite Photocatalysts with Different AuCu Atom Alignment in Visible Light and Different Wavelengths of Incident Light
Recently, the Research Center of the Advanced Materials Center of the Institute of Applied Technology, Chinese Academy of Sciences, Hefei Research Institute of Materials Science has made new progress in the research of metal/semiconductor composite photocatalytic hydrogen production materials. Related research results include Photocatalytic hydrogen production over plasmonic AuCu/CaIn2S4 composites with The different AuCu atomic arrangements are published on Applied Catalysis B-Environmental.
Photocatalysis can realize the conversion of solar energy to chemical energy (such as photocatalytic decomposition of water to hydrogen) and is one of the ideal ways to obtain new energy. The development of photocatalytic materials with broad spectrum response and high carrier separation efficiency is to achieve high solar energy efficiency. The premise and basis of photochemical transformation. The researchers prepared AuCu/CaIn2S4 composite photocatalysts with different arrangements of AuCu atoms (alloy and core-shell structures). It was found that AuCu bimetallic nanoparticle loading can effectively inhibit the recombination of photogenerated carriers, and the AuCu surface isometric. The resonance effect can also broaden the utilization of sunlight for photocatalytic materials (the longest photocatalytic hydrogen generation response wavelength can reach 600nm). Among them, the AuCu alloy structure is superior to the AuCu core-shell structure in terms of carrier separation efficiency and spectral response range, and exhibits better photocatalytic hydrogen production performance. The maximum hydrogen production rate reaches 452.8 μmol/h (or 45.28 mmol/h). Hg). This study has reference significance for the rational design of surface plasmon-based photocatalytic materials based on metal/semiconductor structures.
The research work was supported by the National Natural Science Foundation of China, the Natural Science Foundation of Anhui Province, and the Dean’s Fund of the Hefei Research Institute.
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