期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 3, 期 36, 页码 18711-18717出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta04910e
关键词
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资金
- National Key Basic Research Program of China (973 Program) [2013CB834800, 2013CB632403]
- Ministry of Science and Technology of China [2012DFH40090]
- Natural Science Foundation of China [21371175]
- Beijing Natural Science Foundation [2142033]
- CAS-Croucher Funding Scheme for Joint Laboratories
- Chinese Academy of Sciences (100 Talents Program)
We herein report a novel noble-metal-free photocatalytic H-2-production system by immobilizing CdS nanocrystals on ultrathin Co0.85Se/graphene nanosheets. The well-designed composite material was prepared by a simple solvothermal method and achieved a dramatically enhanced H-2-evolution performance when compared with other bulk counterparts. Under optimal conditions, the H-2-evolution efficiency can reach up to 17.60 mu mol mg(-1) h(-1) after 10 h of LED visible light irradiation, which is comparable to that of noble Pt nanoparticles (18.60 mu mol mg(-1) h(-1)). It is proposed that the unusual catalytic rate arises from the special nanostructure of Co0.85Se and a positive synergetic effect between Co0.85Se and graphene. The results show that the ultrathin Co0.85Se which possesses a half-metallic character is a promising noble-metal-free cocatalyst for practical photocatalytic hydrogen production application.
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