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题名: A promising electrochemical biosensing platform based on graphitized ordered mesoporous carbon
作者: Lu, Xianbo1;  Xiao, Yi2;  Lei, Zhibin2;  Chen, Jiping1;  Zhang, Haijun1;  Ni, Yuwen1;  Zhang, Qing1
通讯作者: 陈吉平
刊名: JOURNAL OF MATERIALS CHEMISTRY
发表日期: 2009
DOI: 10.1039/b903179k
卷: 19, 期:27, 页:4707-4714
收录类别: SCI
文章类型: Article
部门归属: 1
项目归属: 103
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Materials Science
英文摘要: Three dimensional ordered graphitized mesoporous carbon GMC-6 (pore diameter similar to 6 nm) and GMC-13 (pore diameter similar to 13 nm), prepared by a nickel-catalyzed template-assisted method, were explored systematically for the construction of enzyme-based electrochemical biosensors. Comparative studies revealed that GMC-6 offer significant advantages over GMC-13 and graphitized multiwalled carbon nanotubes (CNTs) in facilitating the direct electron transfer of entrapped hemoglobin and improving the performance of fabricated biosensors. The possible factors that affect the biosensing performance of these carbon materials were evaluated comprehensively and comparatively based on the characterization of their physical parameters. The biosensor based on GMC-6 displayed excellent analytical performance over a wide linear range along with good stability and selectivity for the detection of hydrogen peroxide. The "entrapment'' immobilization mode and "interspace confinement effect'' (by restraining the unfolding or conformational change of enzyme molecules from inactivation) provided by GMC can result in pore-size-dependent enzymatic stability and bioactivity, which might be a crucial factor for the superior biosensing performance of GMC-6 to that of CNTs and GMC-13. Graphitized ordered mesoporous carbons with good pore size matching for enzymes proved to be a promising electrochemical biosensing platform.
关键词[WOS]: DIRECT ELECTRON-TRANSFER ;  HYDROGEN-PEROXIDE BIOSENSOR ;  IMMOBILIZED ENZYMES ;  CATALYTIC ACTIVITY ;  HEME-PROTEINS ;  HEMOGLOBIN ;  SILICA ;  ELECTROCATALYSIS ;  CONSTRUCTION ;  STABILITY
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000267571800007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/102471
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, Dalian 116023, Peoples R China
2.Liaoning Normal Univ, Inst Chem Functionalized Mat, Fac Chem & Chem Engn, Dalian 116029, Peoples R China

Recommended Citation:
Lu, Xianbo,Xiao, Yi,Lei, Zhibin,et al. A promising electrochemical biosensing platform based on graphitized ordered mesoporous carbon[J]. JOURNAL OF MATERIALS CHEMISTRY,2009,19(27):4707-4714.
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