| Electrochemical Quartz Crystal Microbalance（EQCM） Characterization of Electrodeposition and Catalytic Activity of Pd-based Electrocatalysts for Ethanol Oxidation |
| |
| 基金项目： | the Guangdong Science and Technology Key Projects,China;Guangzhou Science and Technology Key Projects,China;the Scientific Research Foundation for Young Teachers of the Sun Yat-Sen University,China |
| |
| 摘 要： | Pd was electrochemically deposited on gold-coated quartz crystals at nanogram-level. The coulombic efficiency and initial nucleation and growth mechanism of potentiostatic Pd deposition were investigated via in situ electrochemical quartz crystal microbalance(EQCM). The coulombic efficiencies are 84%, 93% and 95% for Pd deposition at 0.3, 0.2 and 0.1 V(vs. SCE), respectively. The results of chronoamperometric measurements show that the Pd deposition proceeded by an instantaneous nucleation(at 0.3 V) or progressive nucleation(at 0.2 and 0.1 V) in a three-dimensional(3D) growth mode. The catalytic activity of Pd-based electrocatalyst for ethanol oxidation was characterized in an alkaline solution. It was found that the highest mass activity for ethanol oxidation on Pd-based electrocatalyst is 1.8×104 A/(g Pd) deposited at 0.3 V for 5 s.
|
| 关 键 词： | 电化学石英晶体微天平 电催化活性 EQCM 氧化钯 乙醇 电化学沉积 表征 电催化剂 |
Electrochemical Quartz Crystal Microbalance(EQCM) Characterization of Electrodeposition and Catalytic Activity of Pd-based Electrocatalysts for Ethanol Oxidation |
| |
| KE Xi DENG Lu-lu SHEN Pei-kang CUI Guo-feng. Electrochemical Quartz Crystal Microbalance(EQCM) Characterization of Electrodeposition and Catalytic Activity of Pd-based Electrocatalysts for Ethanol Oxidation[J]. Chemical Research in Chinese University, 2010, 26(3): 443-448 |
| |
| Authors: | KE Xi DENG Lu-lu SHEN Pei-kang CUI Guo-feng |
| |
| Affiliation: | [1]State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering [2]School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China |
| |
| Abstract: | |
| |
| Keywords: | |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
