摘要
制备了碳纳米管膜修饰的玻碳陶瓷复合材料电极，研究了亚硝酸盐在修饰电极上的电化学行为，碳纳米管膜对亚硝酸盐的还原展现了良好的催化括性。评估了溶液pH值和施加电位对亚硝酸盐电流响应的影响，并初步探讨了催化机理。在优化的实验条件下，该修饰电极对亚硝酸盐的测定线性范围为5．0×10^-5～3×10^-3mo]／L；检出限（3σ）为2×10^-5moL／L。
Carbon-nanotube modified glassy carbon ceramic composite electrodes exhibiting strong electrocatalytic response toward the reduction of nitrite are described. The effects of pH value of detection solution and applied potential on the current response of nitrite reduction are also discussed. Under optimal conditions, the modified electrode shows a linear response to nitrite in the concentration range from 5× 10^-5 to 3 × 10^-3 mol/L, and the detection limit is 2 × 10^ -5 moL/L at a signal-to-noise ratio of 3.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
2007年第1期139-142,共4页
Chinese Journal of Analytical Chemistry
基金
国家"863"计划资助项目(No2002AA601330)
关键词
碳纳米管
玻碳陶瓷复合材料电极
电催化还原
亚硝酸盐
化学修饰电极
Carbon nanotube, glassy carbon ceramic composite electrode, electrocatalytic reduction, nitrite, chemical modified electrode
