Chinese Journal of Catalysis ›› 2017, Vol. 38 ›› Issue (10): 1680-1687.DOI: 10.1016/S1872-2067(17)62876-6

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Catalytic performance and synthesis of a Pt/graphene-TiO2 catalyst using an environmentally friendly microwave-assisted solvothermal method

Min Wang, Zhongwei Wang, Lu Wei, Jianwei Li, Xinsheng Zhao   

  1. School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221000, Jiangsu, China
  • Received:2017-03-20 Revised:2017-06-11 Online:2017-10-18 Published:2017-10-28
  • Contact: 10.1016/S1872-2067(17)62876-6
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21376113), the Jiangsu Specially Appointed Professor Project, and the Graduate Student Scientific Research Innovation Projects in Jiangsu Province (KYZZ15_0384).

Abstract:

A Pt/graphene-TiO2 catalyst was prepared by a microwave-assisted solvothermal method and was characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, cyclic voltammetry, and linear sweep voltammetry. The cubic TiO2 particles were approximately 60 nm in size and were distributed on the graphene sheets. The Pt nanoparticles were uniformly distributed between the TiO2 particles and the graphene sheet. The catalyst exhibited a significant improvement in activity and stability towards the oxygen reduction reaction compared with Pt/C, which resulted from the high electronic conductivity of graphene and strong metal-support interactions.

Key words: Microwave-assisted solvothermal method, Cube TiO2, Graphene-TiO2, Oxygen reduction reaction