Electro-oxidation treatment of Sn/PANI electrode and electrocatalytic activity of Pt/Sn hydroxide/PANI composite electrodes  

作　　者：周海晖 彭铮 焦勇刚 廖杰 旷亚非 

机构地区：[1]College of Chemistry and Chemical Engineering, Hunan University,Changsha 410082, China

出　　处：《Journal of Central South University of Technology》2008年第5期593-598,共6页中南工业大学学报（英文版）

基　　金：Project(50473022) supported by the National Natural Science Foundation;Projects(05FJ3080, 2006FJ4100) supported by the Science and Technology Program of Hunan Province, China;Project(20060400874) supported by the Postdoctoral Foundation of China;Project (2007018) supported by the Foundation of State Key Laboratory of Chemo/Biosensing and Chemometrics of China;Project(2006) supported by the Postdoctoral Foundation of Hunan University

摘　　要：After being electro-oxidized by cyclic voltammetry(CV) method in 0.5 mol/L H2SO4 solution or in 0.2 mol/L H2O2+0.5 mol/L H2SO4 solution, the Sn/polyaniline (PANI) electrodes were modified with Pt microparticles by pulse galvanostatic method, thus Pt/Sn hydroxide/PANI electrodes were prepared. The electrocatalytic activities of the Pt/Sn/PANI electrode and Pt/Sn hydroxide/PANI electrode for formaldehyde electro-oxidation were investigated by CV method. The effects of deposition charges (Qdep) of PANI, Sn and Pt, scan rate and formaldehyde concentration on the electrocatalytic activity of Pt/Sn hydroxide/PANI electrode were also studied. The results show that the electrocatalytic activities of the Pt/Sn hydroxide/PANI electrodes are much higher than those of the Pt/Sn/PANI electrode.After being electro-oxidized by cyclic voltammetry（CV） method in 0.5 mol/L H2SO4 solution or in 0.2 mol/L H2O2＋0.5 mol/L H2SO4 solution, the Sn/polyaniline （PANI） electrodes were modified with Pt microparticles by pulse galvanostatic method, thus Pt/Sn hydroxide/PANI electrodes were prepared. The electrocatalytic activities of the Pt/Sn/PANI electrode and Pt/Sn hydroxide/PANI electrode for formaldehyde electro-oxidation were investigated by CV method. The effects of deposition charges （Qdep） of PANI, Sn and Pt, scan rate and formaldehyde concentration on the electrocatalytic activity of Pt/Sn hydroxide/PANI electrode were also studied. The results show that the electrocatalytic activities of the Pt/Sn hydroxide/PANI electrodes are much higher than those of the Pt/Sn/PANI electrode.

关 键 词：SN Sn hydroxide FORMALDEHYDE POLYANILINE electrocatalytic activity electro-oxidation 

分 类 号：O643.3[理学—物理化学]