Chem. J. Chinese Universities ›› 2019, Vol. 40 ›› Issue (8): 1662.doi: 10.7503/cjcu20190165

• Physical Chemistry • Previous Articles     Next Articles

Preparation and Catalytic Activity of Graphene Supported Pt/Co Nanoparticles for Hydrogen Generation from KBH4

LI Xiaoli, HUANG Liang, DUAN Hongjuan, ZHANG Li, ZHANG Haijun   

  1. State Key Laboratory of Refractory and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
  • Received:2019-03-20 Revised:2019-07-23 Online:2019-08-10 Published:2019-08-02
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos. 51272188, 51502211), the Program for Innovative Teams of Outstanding Young and Middle-Aged Researchers in the Higher Education Institutions of Hubei Province, China(No.T201602), the Key Program of Natural Science Foundation of Hubei Province, China(No.2017CFA004) and the Youth Fund of State Key Laboratory of Refractory and Metallurgy of Wuhan University of Science and Technology, China(No.2014QN02).

Abstract: Graphene supported Pt/Co bimetallic nanoparticles(GBNPS) were prepared using a chemical co-reduction method. The obtained GBNPS were characterized by transmission electron microscope(TEM), high-resolution transmission electron microscopy(HRTEM), X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS). The effects of metal compositions on the hydrolysis reaction of the alkaline KBH4 solution were studied. The results indicated that the average particle size of GBNPS was from 3.2 nm to 3.9 nm. Pt20Co80 GBNPS displayed the highest catalytic activity, showing a high hydrogen release rate of 35973.35 molH2·h-1·mol-1Pt at 35℃. Pt20Co80 GBNPS showed the corresponding apparent activation energy of 36 kJ/mol for the hydrolysis of an alkaline KBH4.

Key words: Graphene supported, Pt/Co bimetallic nanoparticles, KBH4, Catalytic activity

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