修饰金电极对甲烷的电催化氧化  

Electro-catalytic-oxidation of methane on modified gold electrode

作　　者：张利琴 张彦[2] 董川[2] 

机构地区：[1]山西省环境监控中心,太原030024 [2]山西大学环境科学与工程研究中心,太原030006

出　　处：《环境工程学报》2016年第4期1919-1923,共5页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(50534100)

摘　　要：采用连续电位扫描法对含有Pd(Ⅱ)离子的溶液进行多次循环电位扫描,将钯沉积到金电极、多壁碳纳米管(WCNTs)-Nafion修饰的金电极上,制备了钯纳米、钯纳米-WCNTs修饰的金电极(Pd/Au、Pd-WCNTs/Au电极),利用循环伏安法、交流阻抗法对修饰电极的电化学特性进行了表征,利用差分脉冲法及计时电流法分别研究了Pd/Au电极、Pd-WCNTs/Au电极、Au电极及Pb电极对甲烷电氧化的催化活性,并研究了电极的稳定性和重现性,结果表明,Pd-WCNTs/Au电极对甲烷具有最高的电催化活性,重现性好、稳定性高。Pd nanoparticles and Pd nanoparticle-WCNT modified Au electrodes were prepared by a cyclic potential sweep in a solution containing Pd（ II） ions with a Au electrode and a WCNT-Nafion modified electrode.Voltammetric characterization of the electrodes was carried out by cyclic voltammetry（ CV） and electrochemical impedance. Different pulse voltammograms and amperometric I-T curves were used to study the electro-catalyticoxidation of methane on Pd-WCNT / Au,Pb / Au,Pb,and Au electrodes. The highest electro-catalytic activity,satisfactory reproducibility,and stability were observed on the Pd-WCNT / Au electrode.

关 键 词：甲烷 金电极 钯 循环伏安法 电催化氧化 

分 类 号：X701[环境科学与工程—环境工程]