Acta Phys. -Chim. Sin. ›› 2017, Vol. 33 ›› Issue (3): 563-572.doi: 10.3866/PKU.WHXB201612072

• ARTICLE • Previous Articles     Next Articles

Preparation and Characterization of Pt-Ni-SnO2/C for Ethanol Oxidation Reaction

Ming-Hui HUANG1,Bi-Yao JIN1,Lian-Hua ZHAO1,*(),Shi-Gang SUN2   

  1. 1 Department of Chemistry, College of Science, Yanbian University, Yanji 133002, Jilin Province, P. R. China
    2 State Key Laboratory of Physical Chemistry of Solid Surfaces of Xiamen University, Xiamen 361005, Fujian Province, P. R. China
  • Received:2016-10-12 Published:2017-03-07
  • Contact: Lian-Hua ZHAO E-mail:zhaolianhua@ybu.edu.cn
  • Supported by:
    The project was supported by the Jilin Provincial Science and Technology Project of China(20120741);Opening Foundation of State KeyLaboratory of Physical Chemistry of Solid Surface of Xiamen University, China(201407)

Abstract:

A series of Pt/C, Pt-Ni1/3/C, Pt-SnO2/C and Pt-Nix-SnO2/C (x=1/4, 1/3, 2/3, 1) anode electro-catalysts have been synthesized by an improved B?nnemann method. The crystal structure, surface morphology and surface electronic structure were characterizated by X-ray diffraction (XRD), high resolution transmission electron microscope (HR-TEM) and X-ray photoelectron spectroscopy (XPS). The electro-catalytic activities were characterizated by linear sweep voltammetry (LSV) and amperometric current density-time (j-t) curve techniques for ethanol oxidation reaction (EOR). In situ spectroelectrochemical studies have been used to identity adsorbed reaction intermediates and products (in situ Fourier transform infrared spectroscopy, FT-IR). XRD and HR-TEM analysis revealed two phases in the ternary Pt-Ni-SnO2/C catalyst:Pt-Ni alloys and SnO2. XPS results show that the electronic structure of the Pt in Pt-Ni1/3-SnO2/C might be changed due to the addition of Ni. The activity of Pt-Ni-SnO2/C for EOR was found to be higher than that of Pt/C, Pt-Ni/C and Pt-SnO2/C catalysts. The incorporation of Ni and SnO2 did not significantly improve C-C bond breaking for complete oxidation of ethanol, but the synergy under the low potential (0.1 V) to strengthen the further oxidation of acetaldehyde, generate the acetic acid.

Key words: Platinum, Nickel, Stannic oxide, Ethanol electricoxidation

MSC2000: 

  • O643