CNT/nano TiO_2-Pt修饰电极对葡萄糖的直接电氧化  

Electrocatalytic Oxidation of Glucose on Carbon Nanotubes/Nanocrystlline TiO_2 Film Loaded Pt Complex Electrode

作　　者：吴何珍[1] 褚道葆[2] 陈忠平[2] 尹晓娟[2] 

机构地区：[1]安庆职业技术学院,安徽安庆246003 [2]安徽师范大学化学与材料科学学院,安徽芜湖2410003

出　　处：《安庆师范学院学报（自然科学版）》2006年第2期89-91,共3页Journal of Anqing Teachers College(Natural Science Edition)

基　　金：国家自然科学基金(20476001);安徽省自然科学基金(00045317)资助

摘　　要：多壁碳纳米管/纳米TiO2载Pt(CNT/nanoTiO2-Pt)修饰电极对葡萄糖有较高的催化活性,电极性能稳定,抗中毒能力强,不易发生氧化振荡[1]。本文用电化学循环伏安法研究了在葡萄糖浓度较低的情况下,CNT/nanoTiO2-Pt修饰电极对葡萄糖的催化作用,结果表明:在碱性介质中,CNT/nanoTiO2-Pt修饰电极有较高的灵敏性,当葡萄糖浓度较低(1.25×10-2mol.dm-3)时,有较强的响应电流(电流密度约为22.13mA/cm2),在1.0×10-1mol﹒dm-3￣1.25×10-2mol.dm-3范围内,氧化峰电流密度与浓度之间有良好的线性关系。Carbon nanotubes/nanocrystlline TiO2 film loaded Pt （CNT/nanoTiO2-Pt） complex electrode has high catalytic activity, its performance is stable; it has a strong resistence against poisoning and It＇s difficult to oxidize oscillatory. Electrocatalytie oxidation of glucose in low concentration on CNT/NanoTiO2-Pt complex electrode is investigated by cyclic vohammetry. The results indicate that complex electrode has high sensitivity and strong current to the electrochemical oxidation of glucose in alkaline media, the peak current density of oxidation of glucose is up to 22.13mA/cm^2 in 1.25×10^-2mol dm^-3 glucose solution, The linear range of glucose is 1.0×10^-2mol dm^-3～1.25×10^-2mol dm^-3.

关 键 词：碳纳米管 纳米TIO2 Pt修饰电极 葡萄糖 电催化氧化 

分 类 号：O646[理学—物理化学]