应用化学2009，Vol.26Issue(12)：1471-1475,5.
酞菁钴及其衍生物修饰电极对分子氧的电催化还原
Electrocatalytical Reduction of Oxygen at Cobalt Phthalocyanine and Its Derivative Modified Electrodes
摘要
Abstract
Tetrabromophthalocyanine cobalt(CoPcBr_4), phthalocyanine cobalt(CoPc) and tetra-α-(2,2,4-trimethyl-3-pentyloxy)phthalocyanine cobalt(CoPc(OC_8H_(17))_4) modified electrodes were prepared on glassy carbon(GC) electrodes by the adsorption method. Electrocatalytic reduction of molecular oxygen by the modified electrodes was studied in acidic media by means of cyclic voltammetry and linear sweep volammetry. The effects of phthalocyanine cobalt with different substituted groups on electrocatalytic property were compared. The results indicate that they had good electrocatalytic activity for molecular oxygen reduction. CoPc and CoPc(OC_8H_(17))_4 could catalyze O_2 to give H_2O_2 via two-electron transfer and the reduction peak potentials of O_2 positively shifted by 0.33 V and 0.48 V respectively compared with the bare GC electrode. There are two reduction peaks at about -0.1 V and -0.7 V in the voltammogram obtained at CoPcBr_4 modified electrode, indicating that it catalyzed the reduction of O_2 to H_2O_2 and then sequentially reduced H_2O_2 to H_2O. Finally, it completed the four-electron reduction of O_2.关键词
金属酞菁/氧还原/电催化Key words
metellophthalocyanines/oxygen reduction/electrocatalysis分类
化学化工引用本文复制引用
李亚男,霍丽华,左霞,高山,赵辉,江舟,陈耐生,黄金陵..酞菁钴及其衍生物修饰电极对分子氧的电催化还原[J].应用化学,2009,26(12):1471-1475,5.基金项目
教育部新世纪优秀人才支持计划(NCET-06-0349),黑龙江省骨干教师(1152G027)基金资助项目 （NCET-06-0349）
