碳原子线修饰电极对于对苯二酚电化学反应的催化作用  

Electrocatalysis of Carbon-Atom-Wire-Modified Electrode to the Electrochemical Reaction of p-dihydroxy-benzene

作　　者：徐雯[1] 薛宽宏[1] 尹寿银[1] 刘佳梅[1] 陈邵鹏[1] 

机构地区：[1]南京师范大学化学与环境科学学院,江苏南京210097

出　　处：《南京师大学报（自然科学版）》2005年第1期62-65,共4页Journal of Nanjing Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(20473039).

摘　　要：　利用循环伏安法和强制对流法研究碳原子线修饰电极对于对苯二酚电化学反应的催化作用.与裸玻碳电极相比,碳原子线修饰玻碳电极在含有 1mmol/L对苯二酚的 0. 1mol/LHCl溶液中的循环伏安曲线上的氧化峰电位Epa负移了 102. 5mV,氧化峰电位Epc正移了 143. 3mV,氧化峰电流ipa和还原峰电流ipc分别增大 6. 3和 11. 0倍.强制对流法测得对苯二酚在碳原子线修饰电极上的电化学氧化反应的异相电子传递标准速率常数k0 比裸电极增加 5. 7倍,显示了该修饰电极非常高的电催化活性.Electrocatalysis of carbon atom wire (CAW) modified electrode to the electrochemical reaction of p-dihydroxy-benzene was investigated by using potential sweep and hydrodynamic methods. In the case of cyclic voltammetry, the anodic peak potential E_(pa) shifted negatively by 106.5mV and the cathodic peak potential E_(pc) shifted positively by 143.3mV, while anodic peak current i_(pa) increased by 7.3 times and cathodic peak current increased by 12.0 times respectively on the CAW modified electrode compared to the corresponding naked electrode in 0.1mol/L HCl aqueous solution containing 1 mmol/L p-dihydroxy-benzene. The standard heterogeneous rate constant k^0 on the modified electrode increased by 6.7 times that of the naked electrode, showing the high electrocatalytic activity of the modified electrode.

关 键 词：碳原子线 修饰电极 对苯二酚 电催化 

分 类 号：O643[理学—物理化学]