Photocatalytic Performance of AuCu / CaIn2S4 Composite Photocatalysts with Different AuCu Arrangement Patterns at Visible Light and Incident Light with Different Wavelengths
Recently, the research team of Advanced Materials Center of Institute of Applied Science and Technology, Hefei Institute of Material Science, Chinese Academy of Sciences has made new progress in the research of metal / semiconductor composite photocatalytic hydrogen production. The related research results are as follows: Photocatalytic hydrogen production over plasmonic AuCu / CaIn2S4 composites with different AuCu atomic arrangements, on Applied Catalysis B-Environmental.
Photocatalytic conversion of solar energy to chemical energy (such as photocatalytic decomposition of water to produce hydrogen) is one of the ideal ways to obtain new energy sources. The development of wide-spectral response and high carrier separation efficiency of photocatalytic materials is to achieve solar energy efficient The premise and basis of photochemical conversion.The researchers prepared AuCu / CaIn2S4 composite photocatalytic materials with different AuCu atomic arrangement (alloy structure and core-shell structure) and found that the loading of AuCu bimetallic nanoparticles can effectively inhibit the photocarrier Composite, AuCu surface plasmon resonance effect can also broaden the use of photocatalytic materials on the range of sunlight (the longest photocatalytic hydrogen response wavelength of up to 600nm) which, AuCu alloy structure in the carrier separation efficiency, spectral response range And other aspects are superior to the AuCu core-shell structure, showing better performance of photocatalytic hydrogen production, the maximum hydrogen production rate reached 452.8μmol / h (or 45.28mmol / hg) .This study of metal / semiconductor structure based on surface plasmon The rational design of photocatalytic materials has reference value.
Research has been funded by the National Natural Science Foundation of China, Anhui Province Natural Science Foundation, Hefei Research Institute and other funds.
