Gold nanoparticles/polyaniline Langmuir-Blodgett Film modified glassy carbon electrode as voltammetric sensor for detection of epinephrine and uric acid

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• 作者：Lina Zou ; Yinfeng Li ; Shaokui Cao ; Baoxian Ye
• 关键词：Gold nanoparticles ; Langmuir&ndash ; Blodgett Film ; Polyaniline ; Voltammetric sensor ; Epinephrine ; Uric acid
• 刊名：Talanta
• 出版年：15 December, 2013
• 年：2013
• 卷：117
• 期：Complete
• 页码：333-337
• 全文大小：1310 K

文摘

Gold nanoparticles/polyaniline nanocomposite thin film was deposited onto the surface of glassy carbon electrode(GCE) by Langmuir-Blodgett(LB) technology to fabricate a new voltammetric sensor (GNPs/PAn-LB GCE) for epinephrine(EP) and uric acid(UA) detection. Cyclic voltammetry, electrochemical impedance spectroscopy and atomic force microscopy were employed to study the characteristic of the GNPs/PAn-LB film. Electrochemical behaviors of EP and UA at the modified electrode were investigated in pH 6.6 phosphate buffer solutions. A sensitive electroanalytical method for simultaneous determination of EP and UA was proposed with high precision and good reproducibility.