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A bimetallic sulfide CuCoS with good synergistic effect was constructed to drive high performance photocatalytic hydrogen evolution.

08:00 EDT 11th May 2019 | BioPortfolio

Summary of "A bimetallic sulfide CuCoS with good synergistic effect was constructed to drive high performance photocatalytic hydrogen evolution."

In order to further improve the photocatalytic performance of the semiconductor photocatalyst, a photocatalytic hydrogen production performance was measured using a bimetallic sulfide photocatalyst. On this basis, the hydrogen production performance of the bimetallic sulfide CuCoS (CCS-3) was compared with that of the single metal sulfides CuS and CoS. The results showed that the bimetallic sulfide CCS-3 significantly improved the photocatalytic hydrogen production performance. The unique structure of the bimetallic sulfide CCS-3 made the photocatalytic activity of H 2.47 times and 178.08 times higher than that of CuS and CoS, respectively. In addition, the hydrogen production activity in CCS-3 was also very stable after XRD comparison before and after the reaction. The results of UV-visible diffuse reflectance spectroscopy showed that the visible light response range was significantly expanded, and the forbidden band width was smaller than that of CuS and CoS. Photoluminescence spectroscopy results showed that CCS-3 had the best quenching effect because of its unique structure, which improved the separation efficiency and electron transfer efficiency of photogenerated electrons and holes. This article demonstrated new design strategies that would bring new insights into hydrogen evolution photocatalysts.

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This article was published in the following journal.

Name: Journal of colloid and interface science
ISSN: 1095-7103
Pages: 17-26

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