Ni-P-TiO_2化学复合镀层电极的乙醇电催化氧化  

Electrocatalytic Oxidation of Ethanol on Ni-P-TiO_2 Composite Coating Electrodes

作　　者：胡光辉[1] 曾海霞[1] 魏志钢[1] 潘湛昌[1] 谢署光[1] 邹燕娣[1] 

机构地区：[1]广东工业大学轻工化工学院,广东广州510006

出　　处：《电化学》2012年第2期186-190,共5页Journal of Electrochemistry

基　　金：国家自然科学基金(No.20773013;No.20803014);广东省自然科学基金(No.10251009001000003)资助

摘　　要：于Ni-P镀液添加TiO2颗粒,用化学镀法在黄铜基底上制备不同TiO2含量的Ni-P-TiO2复合镀层电极.采用循环伏安法、线性扫描法、计时电流和交流阻抗法测定Ni-P-TiO2/Cu电极的电化学性能.结果表明:常温下Ni-P-TiO2/Cu电极在碱性溶液中对乙醇氧化有很高的电催化活性;Ni-P-TiO2电极上乙醇的电催化氧化活性随镀层TiO2量的不同而异;镀液中TiO2含量为5 g.L-1时,所得电极的电催化乙醇氧化的活性最佳.The Ni-P-TiO2 composite coating electrodes with different contents of TiO2 particulates were prepared by electroless plating technique from Ni-P plating bath containing TiO2 powders on brass.Cyclic voltammetry,linear sweep voltammetry,chronoamperometry and electrochemical impedance spectroscopy were used to test the electrochemical performance of Ni-P-TiO2/Cu electrodes.It was indicated that the Ni-P-TiO2/Cu electrodes exhibited very strong electrocatalytic activity toward the oxidation of ethanol in alkaline medium at ambient temperature.The electrocatalytic activity of ethanol oxidation on the Ni-P-TiO2 electrodes depended on the amounts of TiO2 in the coatings.The excellent capacity on electrocatalytic oxidation of ethanol was obtained with the electrodes prepared in Ni-P plating bath containing 5 g·L-1 TiO2.

关 键 词：化学镀 Ni-P-TiO2复合镀层 乙醇 电催化氧化 

分 类 号：O646.54[理学—物理化学]