A facile route to (ZnS)x(CuInS2)1−x hierarchical microspheres with excellent water-splitting ability
A facile route to (ZnS)x(CuInS2)1−x hierarchical microspheres with excellent water-splitting ability
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DOI：
10.1039/c2jm35166h
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发表时间：
2012-10
影响因子：
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通讯作者：
Yuhan Lin;Fang Zhang;Daocheng Pan
中科院分区：
文献类型：
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作者：
Yuhan Lin;Fang Zhang;Daocheng Pan
采用一锅溶剂热法合成了一系列化学成分可控的(ZnS)x(CuInS2)1−x分级微/纳米结构固溶体。以氧化锌、氧化铜和氢氧化铟为原料，溶解于由CS2和乙醇胺原位生成的乙醇二硫代氨基甲酸中。乙醇二硫代氨基甲酸不仅是一种可热降解的配体，而且在合成过程中还可以作为硫源，通过简单的焙烧过程即可完全脱除。所制备的(ZnS)x(CuInS2)1−x微球具有由约7 nm纳米粒子组成的分级微/纳米结构。这些样品具有高比表面积(高达101.6 m2 g−1)和独特的层次化结构，在可见光照射下表现出优异的光催化析氢活性，没有任何贵金属负载。
A series of (ZnS)x(CuInS2)1−x hierarchical micro/nano-structured solid solutions with precisely controlled chemical composition were synthesized via a facile one-pot solvothermal method. ZnO, Cu2O, and In(OH)3 are used as the starting materials and dissolved in ethanol dithiocarbamic acid which is formed from CS2 and ethanolamine in situ. The ethanol dithiocarbamic acid not only serves as a thermally-degradable ligand, but also acts as sulfur source during synthesis, and can be completely removed by a simple calcination process. As-prepared (ZnS)x(CuInS2)1−x microspheres have a hierarchical micro/nano structure composed of around 7 nm nanoparticles. These samples show excellent photocatalytic H2 evolution activity under visible-light irradiation without any noble metal loading owing to their high surface area (as high as 101.6 m2 g−1) and unique hierarchical structure.