Activity of a novel titanium-supported bimetallic PtSn/Ti electrode for electrocatalytic oxidation of formic acid and methanol |
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| Authors: | Qingfeng Yi Jingjing Zhang Aicheng Chen Xiaoping Liu Guorong Xu Zhihua Zhou |
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| Affiliation: | (1) School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China;(2) Chemistry Science and Technology School, Zhanjiang Normal University, Zhanjiang, 524048, China;(3) Department of Chemistry, Lakehead University, Thunder Bay, ON, Canada, P7B 5E1 |
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| Abstract: | Bimetallic platinum–tin nanoparticles were co-deposited on a titanium surface using a simple one step hydrothermal method process. The electrochemical catalytic activity of this titanium-supported nanoPtSn/Ti electrode towards the oxidation of formic acid and methanol in 0.5 M H2SO4 was evaluated by voltammetric techniques, chronoamperometric responses and electrochemical impedance spectra (EIS). According to the cyclic voltammograms of the oxidation of both formic acid and methanol, the nanoPtSn/Ti presents high anodic current densities and low onset potentials. Potential-time transient measurements show that the nanoPtSn/Ti exhibits high steady-state current densities for the oxidation of both formic acid and methanol. The EIS data indicate that the nanoPtSn/Ti presents very low electrochemical impedance values, showing that for the oxidation of both formic acid and methanol, low charge transfer resistances are present on the nanoPtSn/Ti catalyst. This confirms the high electrocatalytic activity of the nanoPtSn/Ti for the formic acid and methanol oxidation. |
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| Keywords: | Bimetallic PtSn Formic acid oxidation Methanol oxidation Titanium substrate |
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