摘要
将多壁碳纳米管（MWNT）与壳聚糖（CS）的混合液滴涂到玻碳电极表面，再引入纳米金（GNPs）与天青Ⅰ（AI）制得了AI／GNPs／CS/MWNT修饰电极，并探讨了该修饰电极的电化学性质．实验表明：该修饰电极对烟酰胺腺嘌呤二核苷酸（NADH）的电化学氧化具有很好的催化活性．NADH氧化峰电位比未修饰的玻碳电极负移了660mV，氧化峰电流与其浓度在9．10×10^-6～5．53×10^-3mol／L的范围内呈良好的线性关系，相关系数为0．997，检出限为4．50μmol／L．
An azure Ⅰ/gold colloidal nanoparticles/multi-walled carbon nanotube （AI/GNPs/CS/MWNT） wodified glassy carbon electrode was fabricated. The electrochemical behaviors of modified electrode have been described. The modified electrode showed a good electrochemically catalytic activity for the oxidation of reduced nicotinamide adenine dinucleotide （NADH） ,in which the peak potential shifted negatively for 660 mV on the modified electrode compared with unmodified glassy carbon electrode. The catalytic current of NADH versus,its concentration,had a good linearity in the range of 9.10 × 10^-6～ 5.53 × 10^-3 mol/L, with a detection limit of 4.50μmol/L.
出处
《河北师范大学学报（自然科学版）》
CAS
北大核心
2008年第4期492-495,499,共5页
Journal of Hebei Normal University：Natural Science
基金
国家自然科学基金(29705001)
重庆市自然科学基金(CSTC-2004BB4149)
关键词
碳纳米管
纳米金
NADH
电催化氧化
carbon nanotube
gold colloidal nanoparticles
NADH
electrocatalytic oxidation
