Citation: MA Zhong, YUAN Xian-Xia, XIA Xiao-Yun, DU Juan, LI Lin, MA Zi-Feng. Effects of pH on the Properties of Mo-Modified Pt/C Synthesized by Microwave-Assisted Method as Catalyst for Electro-Oxidation of Ethanol[J]. Acta Physico-Chimica Sinica, ;2014, 30(5): 973-979. doi: 10.3866/PKU.WHXB201403071 shu

Effects of pH on the Properties of Mo-Modified Pt/C Synthesized by Microwave-Assisted Method as Catalyst for Electro-Oxidation of Ethanol

1.
Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China

Received Date: 30 December 2013
Available Online: 7 March 2014
Fund Project:

A series of Mo-modified Pt/C catalysts were synthesized, using a microwave-assisted technique, and the effects of pH value on the electrocatalytic performance of the resulted catalysts for ethanol oxidation were investigated. X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) were employed to characterize the crystal structures, morphologies, particle sizes and the distributions, and electronic states of the catalysts. Cyclic voltammetry (CV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS) were used to investigate the catalytic performances. The results revealed that alkaline environments are beneficial in the syntheses of catalysts with small and uniformly dispersed particles on the carbon support. The catalyst prepared at pH 14 exhibited the smallest catalyst particles, highest electrochemical surface area, best electrocatalytic activity, and durability for ethanol oxidation.
- Electro-oxidation of ethanol,
- Molybdenum modified Pt/C catalyst,
- Microwave assisted synthesis,
- pH value
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沈阳化工大学材料科学与工程学院沈阳 110142