Fabrication of a novel glucose biosensor based on a highly electroactive polystyrene/polyaniline/Au nanocomposite

被引：115

作者：

Liu, Yuge ^{[1
]}

Feng, Xiaomiao ^{[1
,2
]}

Shen, Jianmin ^{[1
]}

Zhu, Jun-Jie ^{[1
]}

Hou, Wenhua ^{[1
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, Key Lab Analyt Chem Life Sci MOE, Key Lab Mesoscop Chem MOE, Nanjing 210093, Peoples R China

[2] Nanjing Univ Posts & Telecommun, Inst Adv Mat, Jiangsu Key Lab Organ Elect & Informat Displays, Nanjing 210003, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2008年 / 112卷 / 30期

关键词：

D O I：

10.1021/jp801938w

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel nanocomposite with a core-shell structure containing polystyrene (PS), polyaniline (PANI), and Au nanoparticles (NPs) was synthesized. The nanocomposite was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FTIR). Cyclic voltammetric experiments indicated that the nanocomposite had excellent redox ability in a wide range of pH values. The existence of Au NPs resulted in a higher electrical conductivity of the nanocomposite. As a model, glucose oxidase (GOD) was entrapped onto the nanocomposite-modified glassy carbon electrode (GCE) and applied to construct a sensor. The immobilized GOD showed a pair of well-defined redox peaks and high catalytic activity for the oxidation of glucose.

引用

页码：9237 / 9242

页数：6

共 46 条

[1] A nonoxidative sensor based on a self-doped polyaniline/carbon nanotube composite for sensitive and selective detection of the neurotransmitter dopamine [J].