4.8 Article

Nitrogen-Doped Graphene/ZnSe Nanocomposites: Hydrothermal Synthesis and Their Enhanced Electrochemical and Photocatalytic Activities

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

资金

  1. National Basic Research Program of China [2010-CB934700]
  2. National Natural Science Foundation of China [91022032, 50732006]
  3. International Science & Technology Cooperation Program of China [2010DFA41170]
  4. National Synchrotron Radiation Laboratory at the University of Science and Technology of China

向作者/读者索取更多资源

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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