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题名: Direct electron transfer of cytochrome c and its biosensor based on gold nanoparticles/room temperature ionic liquid/carbon nanotubes composite film
作者: Xiang, Cuili1, 2;  Zou, Yongjin1, 2;  Sun, Li-Xian1;  Xu, Fen1
通讯作者: 孙立贤 ;  徐芬
关键词: cytochrome c ;  room temperature ionic liquid ;  gold nanoparticles ;  multi-walled carbon nanotubes ;  direct electron transfer
刊名: ELECTROCHEMISTRY COMMUNICATIONS
发表日期: 2008
DOI: 10.1016/j.elecom.2007.10.030
卷: 10, 期:1, 页:38-41
收录类别: SCI
文章类型: Article
部门归属: 15
项目归属: 1504
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Electrochemistry
研究领域[WOS]: Electrochemistry
英文摘要: A robust and effective composite film based on gold natioparticles (GNPs)/room temperature ionic liquid (RTIL)/multi-wall carbon nanotubes (MWNTs) modified glassy carbon (GC) electrode was prepared by a layer-by-layer self-assembly technique. Cytochrome c (Cyt c) was successfully immobilized on the RTIL-nanohybrid film modified GC electrode by electrostatic adsorption. Direct electro-chemistry and electrocatalysis of Cyt c were investigated. The results suggested that Cyt c could be tightly adsorbed on the modified electrode. A pair of well-defined quasi-reversible redox peaks of Cyt c was obtained in 0.10 M, pH 7.0 phosphate buffer solution (PBS). RTIL-nanohybrid film showed an obvious promotion for the direct electron transfer between Cyt c and the underlying electrode. The immobilized Cyt c exhibited an excellent electrocatalytic activity towards the reduction of H2O2. The catalysis currents increased linearly to the H2O2 concentration in a wide range of 5.0 x 10(-5) - 1.15 x 10(-3) M. Based on the multilayer film, the third-generation biosensor could be constructed for the determination of H2O2. (C) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: DIRECT ELECTROCHEMISTRY ;  LIQUIDS ;  REDUCTION ;  ELECTROCATALYSIS ;  HEMOGLOBIN ;  MATRIX ;  SALTS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000252604500008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/99979
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Mat & Thermochem Lab, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Xiang, Cuili,Zou, Yongjin,Sun, Li-Xian,et al. Direct electron transfer of cytochrome c and its biosensor based on gold nanoparticles/room temperature ionic liquid/carbon nanotubes composite film[J]. ELECTROCHEMISTRY COMMUNICATIONS,2008,10(1):38-41.
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