PB/Au/CILE的制备与应用  

Fabrication and application of a PB/Au/CILE

作　　者：上官小东[1,2] 刘锐晓[1] 汤宏胜[1] 郑建斌[1] 

机构地区：[1]西北大学分析科学研究所,陕西省电分析化学重点实验室,西安710069 [2]宝鸡职业技术学院,宝鸡721013

出　　处：《分析试验室》2012年第9期34-37,共4页Chinese Journal of Analysis Laboratory

基　　金：国家自然科学基金(20675062);高等学校博士学科点专项科研基金(20060697013)资助

摘　　要：混合离子液体(N-丁基吡啶六氟磷酸盐,[BuPy][PF6])与石墨粉,制备了离子液体碳糊电极(CILE),再采用电沉积法制得PB/Au/CILE修饰电极,研究了该修饰电极的电化学行为及其对H2O2的电催化,建立了H2O2的计时安培测定新方法。结果表明:在该修饰电极上PB产生了一对准可逆的氧化还原峰,并对H2O2表现出良好电催化作用,安培法测定H2O2的线性范围为5.0×10-6～1.55×10-4mol/L,检出限为1.0×10-6mol/L(S/N=3)。连续10次测定5.0×10-6mol/L H2O2峰电流的RSD为2.1%。A carbon pyridinium ionic liquid electrode （CILE） was fabricated by mixing n-butyl pyridinium hexafluophosphate with graphite powder. A PB/Au/CILE modified electrode which was got by electrodepositing, was applied to investigate its electrochemical behaviors and eleetroeatalysis towards H202. The chronoamperometry was used to determine H202. PB on the modified electrode exhibited a pair of quasi- reversible redox peaks, good electroeatalysis towards H202, and the catalytic currents were linearly with concentration of H202in the range of 5.0 x 10 -6 ~ 1.55 x 10-4 mol/L （ r = 0. 9966 ） with a detection limit of 1.0 x 10 -6moL/L （ S/N = 3 ）. The proposed electrode had good stability and reproducibility.

关 键 词：化学修饰电极 电沉积 电催化 离子液体 H2O2 

分 类 号：O657.1[理学—分析化学]