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首页> 外文期刊>Catalysis science & technology >Direct Z-scheme CdS-NiPc heterojunctions as noble metal-free photocatalysts for enhanced photocatalytic hydrogen evolution
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Direct Z-scheme CdS-NiPc heterojunctions as noble metal-free photocatalysts for enhanced photocatalytic hydrogen evolution

机译：直接Z-scheme CdS-NiPc垂直高贵不含金属的催化剂为增强光催化氢进化

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摘要

The reasonable construction of Z-scheme heterojunctions is an effective pathway to enhance the photocatalytic performance. In this work, a direct Z-scheme cadmium sulfide-nickel phthalocyanine (CdS-NiPc) heterojunction was successfully constructed by a one-step solvothermal method, which exhibited highly efficient photocatalytic activity for hydrogen evolution and good cyclic stability under visible light irradiation. An optimal sample CdS-10%NiPc with 10 wt% NiPc was obtained, and the photocatalytic hydrogen production rate could reach 17.74 mmol h(-1) g(-1), which was 19.1 times higher than that of the pure CdS sample. The reasons for the improvement and the photocatalytic mechanism were studied in detail. The result indicated that the formation of a direct Z-scheme heterojunction made a close contact between CdS and NiPc, which effectively accelerated the separation and migration of charges. This study enriches the CdS-based composite photocatalysts for hydrogen evolution and provides a simple method for the construction of efficient Z-scheme inorganic-organic heterojunctions.
机译：Z-scheme的合理建设垂直是一种有效的途径提高光催化性能。工作,直接Z-scheme sulfide-nickel镉酞菁(CdS-NiPc)异质结成功建立了一步solvothermal方法,表现出高度高效的光催化活性氢进化和良好的循环稳定性下可见光照射。10 wt % NiPc得到,光催化制氢速率达到17.74更易与h (1) g (1), 19.1倍的纯cd样本。的原因和改善光催化机理进行了研究。结果表明,形成直接Z-scheme异质结了cd和NiPc之间的联系,这有效加速的分离和迁移指控。复合催化剂对氢进化和建设提供了一个简单的方法有效的Z-scheme无机垂直。

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