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首页> 外文期刊>journal of the korean ceramic society >Novel NiCo2Se4/Mn0.5Cd0.5S photocatalyst for visible light-driven hydrogen evolution
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Novel NiCo2Se4/Mn0.5Cd0.5S photocatalyst for visible light-driven hydrogen evolution

机译：Novel NiCo2Se4/Mn0.5Cd0.5S photocatalyst for visible light-driven hydrogen evolution

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摘要

The development of efficient and stable photocatalysts is one of the most important research directions to realize the practical application of photocatalytic hydrogen evolution. A series of novel visible light responsive NiCo2Se4/Mn0.5Cd0.5S composites with different NiCo2Se4 contents were prepared by hydrothermal method. The composites were characterized using different characterization techniques such as XRD, SEM, TEM, XPS, UV-Vis DRS, PL, and photoelectrochemistry. Photocatalytic hydrogen evolution reaction was also performed using visible light (lambda > 420 nm) in an aqueous solution containing Na2S center dot 9H(2)O and Na2SO3 as sacrificial reagents. The 4% NiCo2Se4/Mn0.5Cd0.5S composites exhibited the highest photocatalytic hydrogen evolution capacity, producing 20 mmol h(-1) g(-1) of hydrogen, higher than pure Mn0.5Cd0.5S (12.2 mmol h(-1) g(-1)). The tight bonding of the two materials in the NiCo2Se4/Mn0.5Cd0.5S composites may enhance the photocatalytic activity to some extent. The possible mechanism was suggested by UV-Vis DRS and photoelectrochemical measurements. The obtained NiCo2Se4/Mn0.5Cd0.5S composites have excellent photocatalytic activity and good stability in photocatalytic hydrogen evolution, and have potential applications in the photocatalytic hydrogen evolution from water using solar energy.

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