摘要
采用复合电沉积-化学置换法制备了铝镁氢氧化物修饰的镍金(Au/Ni)复合电催化剂。采用循环伏安、电流时间曲线、Tafel曲线及电化学阻抗谱等电化学手段研究了铝镁氢氧化物修饰的Au/Ni复合电催化剂在碱性介质中电催化氧化乙醇的行为,研究结果表明:铝镁氢氧化物能显著提高Au/Ni催化剂电催化氧化乙醇的活性;当复合电镀液中铝镁氢氧化物含量为100mg·L-1时,铝镁氢氧化物修饰的Au/Ni复合电催化剂活性最高。
Magnesium aluminum hydroxide modified Au/Ni catalysts were prepared via co electrodeposition and chemical replacement processes ,and their electrocatalytic performances for ethanol oxidation were investigated with multi‐cyclic voltammetry ,current time curve ,Tafel curve ,and electrochemical impedance spectroscopy （EIS） .The research result showed that magnesium aluminum hydroxide could enhance the catalytic activity of Au/Ni toward ethanol electro oxida‐tion ,and that the magnesium aluminum hydroxide modified Au/Ni catalyst with 100 mg ＆#183; L -1 of magnesium aluminum hydroxide in the electroplating solution exhibited the best performance for ethanol electro oxidation .
出处
《黄冈师范学院学报》
2016年第3期25-30,共6页
Journal of Huanggang Normal University
基金
国家自然科学基金面上项目(21577046)
国家自然科学青年基金(21307038)
黄冈师范学院物理化学实验改革项目(2015CK12)
关键词
电沉积
复合电催化剂
乙醇氧化
Au/Ni电极
electrodeposition
composite catalyst
ethanol electro oxidation
Au/Ni electrode
