期刊
ACS NANO
卷 6, 期 1, 页码 712-719出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn204191x
关键词
nitrogen-doped graphene; ZnSe; nanocomposite; photocatalytic activities; oxygen reduction reaction
类别
资金
- National Basic Research Program of China [2010-CB934700]
- National Natural Science Foundation of China [91022032, 50732006]
- International Science & Technology Cooperation Program of China [2010DFA41170]
- National Synchrotron Radiation Laboratory at the University of Science and Technology of China
Nitrogen-doped graphene (GN) has great potential applications in many fields because doping with nitrogen can alter the electrical properties of graphene. It is still a challenge to develop a convenient method for synthesis of GN sheets. In this paper, we first report the synthesis of a nitrogen-doped graphene/ZnSe nanocomposite (GN-ZnSe) by a one-pot hydrothermal process at low temperature using graphene oxide nanosheets and [ZnSe](DETA)(0.5) nanobelts as precursors. ZnSe nanorods composed of ZnSe nanoparticles were found to deposit on the surface of the GN sheets. The results demonstrated that [ZnSe](DETA)(0.5) nanobelts were used not only as the source of ZnSe nanopartides but also as the nitrogen source. Interestingly, it was found that the as-prepared nanocomposites exhibit remarkably enhanced electrochemical performance for oxygen reduction reaction and photocatalytic activities for the bleaching of methyl orange dye under visible-light irradiation. This facile and catalyst-free approach for depositing ZnSe nanopartides onto the graphene sheets may provide an alternative way for preparation of other nanocomposites based on GN sheets under mild conditions, which show their potential applications in wastewater treatment, fuel cells, energy storage, nanodevices, and so on.
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