光催化
分解水
材料科学
热液循环
硫化镉
光催化分解水
载流子
化学工程
硫化氢
纳米技术
可见光谱
钴
光电子学
化学
硫黄
催化作用
工程类
冶金
生物化学
作者
Bocheng Qiu,Qiaohong Zhu,Mengmeng Du,Linggang Fan,Mingyang Xing,Jinlong Zhang
标识
DOI:10.1002/anie.201612551
摘要
Abstract Hollow structures with an efficient light harvesting and tunable interior component offer great advantages for constructing a Z‐scheme system. Controlled design of hollow cobalt sulfide (Co 9 S 8 ) cubes embedded with cadmium sulfide quantum dots (QDs) is described, using hollow Co(OH) 2 as the template and a one‐pot hydrothermal strategy. The hollow CdS/Co 9 S 8 cubes utilize multiple reflections of light in the cubic structure to achieve enhanced photocatalytic activity. Importantly, the photoexcited charge carriers can be effectively separated by the construction of a redox‐mediator‐free Z‐scheme system. The hydrogen evolution rate over hollow CdS/Co 9 S 8 is 134 and 9.1 times higher than that of pure hollow Co 9 S 8 and CdS QDs under simulated solar light irradiation, respectively. Moreover, this is the first report describing construction of a hollow Co 9 S 8 based Z‐scheme system for photocatalytic water splitting, which gives full play to the advantages of light‐harvesting and charges separation.
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