Cube-in-Cube Hollow Cu9S5 Nanostructures with Enhanced Photocatalytic Activities in Solar H2 Evolution
Cube-in-Cube Hollow Cu9S5 Nanostructures with Enhanced Photocatalytic Activities in Solar H2 Evolution
复制标题
立方中立方空心 Cu9S5 纳米结构在太阳能制氢中具有增强的光催化活性
DOI：
10.1002/chem.201403683
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Qian Xuefeng
中科院分区：
文献类型：
--
作者：
Xu Miao;Wang Min;Ye Tiannan;Liang Na;Jin Lun;Zai Jiantao;Qian Xuefeng
太阳能制氢是一种理想的清洁能源，其制氢效率通常取决于基于新化合物和/或独特纳米结构的催化体系。本文以Cu 2 O纳米立方体和CS2为前驱体，成功地制备了立方中立方结构的空心Cu 9 S5纳米结构，并以Na 2S代替CS2得到了单壳空心Cu 9 S5纳米立方体。基于Kirkendell效应和外向自组装过程，提出了立方中立方中空纳米结构的形成机理。进一步的研究表明，Cu 9 S5纳米结构具有较好的光催化活性，有望成为太阳能制氢领域的一种新型光催化剂。
Hydrogen produced from water under solar energy is an ideal clean energy source, and the efficiency of hydrogen production usually depends on the catalytic systems based on new compounds and/or a unique nanostructure. Herein, well‐defined cube‐in‐cube hollow Cu9S5nanostructures have been successfully prepared with Cu2O nanocubes and CS2as precursors, and single‐shell hollow Cu9S5nanocubes could be obtained by replacing CS2with Na2S. The formation mechanism of cube‐in‐cube hollow nanostructures has been proposed based on the Kirkendell effect and an outward self‐assembly process. Further studies revealed that the cube‐in‐cube hollow Cu9S5nanostructures exhibited better photocatalytic activity toward solar H2evolution and would be a promising photocatalyst in the solar hydrogen industry.