普鲁士蓝/氧化锆复合材料的电化学行为及对H_2O_2的电催化
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摘要
通过一步电沉积技术制备了普鲁士蓝/氧化锆修饰玻碳电极。采用电化学阻抗技术表征修饰电极。采用循环伏安法研究了pH值和扫描速率对该修饰电极的电化学行为的影响。结果表明:普鲁士蓝的峰电流与其扫描速率的一次方在一定范围内呈良好的线性关系。此外,该修饰电极在含有KCl(1.0mol/L)的磷酸盐缓冲溶液(0.1mol/L,pH=7.0)中,对H2O2具有明显的电催化作用,在无酶检测H2O2领域具有潜在的应用价值。
A prussian blue/ZrO2 modified glassy carbon electrode was fabricated by one-step electrodeposition method.The electrochemical impedance technology was used to be characterized the electrode fabrication procedures.The electrochemical behaviors of prussian blue/ZrO2 modified glassy carbon electrode were studied by cyclic voltammetry.The results indicated that the peak currents of the prussian blue had linear relationship with the scaning rate.In addition,agood electric-catalytic activity for H2O2 was obtained in 0.1mol/L phosphate buffer solution(pH=7.0)containing 1.0mol/L KCl.This method has a potential application for the non-enzyme determination of H2O2.
A prussian blue/ZrO2 modified glassy carbon electrode was fabricated by one-step electrodeposition method.The electrochemical impedance technology was used to be characterized the electrode fabrication procedures.The electrochemical behaviors of prussian blue/ZrO2 modified glassy carbon electrode were studied by cyclic voltammetry.The results indicated that the peak currents of the prussian blue had linear relationship with the scaning rate.In addition,agood electric-catalytic activity for H2O2 was obtained in 0.1mol/L phosphate buffer solution(pH=7.0)containing 1.0mol/L KCl.This method has a potential application for the non-enzyme determination of H2O2.
引文
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[2]Karyakin AA,Karyakin EE.Electroanalytical applications of prussian blue and its analogs[J].Chemical Bulletin,2001,50(12):1811-1817.
[3]胡荣,双雅琼,李伟,等.普鲁士蓝多壁碳纳米管修饰电极测定维生素C[J].分析试验室,2009,28(7):61-64.
[3]朱丽娜,李兰芳,杨平,等.多巴胺在碳纳米管/普鲁士蓝复合膜修饰电极上的电化学行为及其选择性测定[J].化学与生物工程,2009,26(5):80-84.
[4]Camargo PHC,Xiong YJ,Ji L,et al.Facile synthesis of tadpole-like nanostructures consisg of Au heads and Pd tails[J].J Am Chem Soc.,2007,129(6):15452-15455.
[5]Zhang J,Fang JY.A general strategy for preparation of Pt 3d-transition metal(Co,Fe,Ni)Nanocubes[J].J Am Chem Soc.,2009,131(56):18543-18546.
[6]Habas S,Lee E,Radmilovic H,et al.Shaping binary metal nanocrystals through epitaxial seeded growth[J].Nat Mater,2007,48(6):692-693.
[7]Lee H,Habas SE,Somorjai GA,et al.Localized Pd over growth on cubic Pt nanocrystals for enhanced electrocatalytic oxidation of formic acid[J].J Am Chem Soc.,2008,130(36):5406-5408.
[8]李正,马玉婷,吴莹,等.Au-Pt-NPs/G修饰电极对亚硝酸根的电催化性质[J].光谱实验室,2011,28(5):2383-2386.
[9]李艳芬,张晶晶,赵倩,等.鸟嘌呤和8-羟基脱氧鸟嘌呤核苷在聚甘氨酸修饰电极上的电化学行为及其同时测定[J].化学传感器,2009,29(1):43-48.
[10]Wang XY,Gu HF,Yin F,et al.A glucose biosensor based on prussian blue/chitosan hybrid film[J].Biosen Bioelectron,2009,24(4):1527-1530.
[11]Shan YP,Yang GC,Gong J,et al.Prussian blue nanoparticles potentiostatically electrodeposited on indium tinoxide/chitosan nanofibers electrode and their electrocatalysis towards hydrogen peroxide[J].Electrochim Acta,2008,53(10):7751-7755.
[12]Ou CF,Chen SH,Yuan R,et al.Layer-by-layer self-assembled multilayer films of multi-walled carbon nanotubes and platinum-Prussian blue hybrid nanoparticles for the fabrication of amperometric immunosensor[J].J Electroanal Chem.,2008,624(1):287-292.
[13]史丽英,王英.高比表面积纳米氧化锆的制备及应用[J].南京大学学报:自然科学版,2004,45(35):2755-2756.