碳纳米管/纳米二氧化钛-聚苯胺载铂复合电极对葡萄糖的电催化氧化  

Electrocatalytic Oxidation of Glucose on Carbon Nanotube/Nanocrystalline TiO_2-Polyaniline Film Loaded Pt Complex Electrode

作　　者：褚道葆[1] 吴何珍[1] 陈忠平[1] 尹晓娟[1] 

机构地区：[1]安徽师范大学化学与材料科学学院,芜湖241000

出　　处：《分析化学》2006年第9期1269-1272,共4页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金(No.20476001);安徽省自然科学基金(No.00045317)资助课题

摘　　要：采用循环伏安(CV)、微分脉冲伏安(DPV)和计时电位法研究了碳纳米管/纳米TiO2-聚苯胺膜载Pt(CNT/nanoTiO2-PAn-Pt)复合电极对葡萄糖的电催化氧化作用。结果表明,在碱性介质中CNT/nanoTiO2-PAn-Pt复合电极对葡萄糖的电氧化具有高催化活性。当葡萄糖浓度为1.25×10-2mol/L时,氧化峰电流密度达到32.8 mA/cm2,且有很高的灵敏度和稳定性;当葡萄糖浓度为1.0×10-5mol/L时,其响应电流密度为13.8mA/cm2。大电流氧化时未发生振荡现象,是葡萄糖传感器的高活性催化电极。Eleetroeatalytie oxidation of glucose on carbon nanotube/nanocrystalline TiO2-polyaniline （PAn） film loadedPt （CNT/nanoTiO2-PAn-Pt） complex electrode was investigated by cyclic vohammetry , differential pulse voltammetry and chronopotentiometry. The results indicated that CNT/nanoTiO2-PAn-Pt complex electrode exhibits high catalytic activity to the electrochemical oxidation of glucose in alkaline media. The current density of oxidation peak of glucose is up to 32.75 mA/cm^2 in 1.25 10^ -2 mol/L glucose solution and 13.8 mA/cm^2 in 1.0 10 ^-5 mol/L glucose solution. It didn＇t happen to oxidize oscillatory with a high current. It is a high active catalytic electrode for using in glucose sensor.

关 键 词：葡萄糖 电催化氧化 碳纳米管/纳米二氧化钛-聚苯胺膜 载铂复合电极 微分脉冲伏安法 

分 类 号：O646.54[理学—物理化学]