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首页> 外文期刊>Catalysis science & technology >Hierarchical flower-like ZnIn2S4 anchored with well-dispersed Ni12P5 nanoparticles for high-quantum-yield photocatalytic H-2 evolution under visible light
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Hierarchical flower-like ZnIn2S4 anchored with well-dispersed Ni12P5 nanoparticles for high-quantum-yield photocatalytic H-2 evolution under visible light

机译:分层如花似玉ZnIn2S4锚定说法Ni12P5纳米粒子的high-quantum-yield光催化氢进化在可见光下

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摘要

Developing cost-effective, highly efficient and stable visible-light photocatalysts towards photocatalytic hydrogen (H-2) production from water splitting is critical for the conversion of renewable solar energy to chemical fuels. Herein, hierarchical flower-like ZnIn2S4 was synthesized by using a hydrothermal method, and subsequently coupled with Ni12P5 nanoparticles via a facile solution-phase method. Benefitting from the incorporation of nanostructured Ni12P5, which effectively facilitates charge separation and provides active sites for photocatalytic H-2 evolution, the as-prepared ZnIn2S4/Ni12P5 composite photocatalysts show high performance for H-2 production from aqueous solutions of Na2S/Na2SO3 under visible light irradiation. In particular, the ZnIn2S4/Ni12P5 sample with an optimal loading of Ni12P5 exhibits a maximum H-2 evolution rate of 2263 mu mol h(-1) g(-1) with an extremely high apparent quantum yield (AQY) of 20.5% at 420 nm. More importantly, the enhanced photocatalytic performance of the ZnIn2S4/Ni12P5 heterojunction was investigated by using photoelectrochemical (PEC) measurements. In short, this work highlights the importance of the interfacial design of transition metal phosphide-decorated ternary metal sulfide semiconductors towards efficient and stable photocatalysis.
机译:发展具有成本效益的、高效的和稳定的可见光催化剂对光催化氢气(h2)生产水分裂的转换是至关重要的可再生能源太阳能化学燃料。分层如花似玉ZnIn2S4合成通过水热法,随后再加上Ni12P5通过灵巧的纳米颗粒液相法。的纳米Ni12P5合并有效地促进电荷分离和为光催化2提供了活跃的网站进化,好ZnIn2S4 / Ni12P5复合催化剂显示高绩效2生产水的解决方案可见光照射下钠/泥。特别ZnIn2S4 / Ni12P5样本的最优加载Ni12P5展品最多2进化的速度2263亩摩尔h (1) g(1)一个极高的表观量子产率(尔)20.5%在420 nm。ZnIn2S4 / Ni12P5的光催化性能异质结被使用了光电化学(压电)测量。短,这项工作突出的重要性过渡金属的界面设计phosphide-decorated三元金属硫化物半导体向高效、稳定光催化作用。

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