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Graphitized macroporous carbon microarray with hierarchical mesopores as host for the fabrication of electrochemical biosensor
Lu, Xianbo1; Xiao, Yi2; Lei, Zhibin2; Chen, Jiping1; Chen JP(陈吉平)
关键词Biosensor Graphitized Ordered Macroporous Carbon Direct Electron Transfer Hemoglobin Hydrogen Peroxide
刊名BIOSENSORS & BIOELECTRONICS
2009-09-15
DOI10.1016/j.bios.2009.06.018
25期:1页:244-247
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 ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]Biophysics ; Biotechnology & Applied Microbiology ; Chemistry, Analytical ; Electrochemistry ; Nanoscience & Nanotechnology
研究领域[WOS]Biophysics ; Biotechnology & Applied Microbiology ; Chemistry ; Electrochemistry ; Science & Technology - Other Topics
关键词[WOS]DIRECT ELECTRON-TRANSFER ; PEROXIDASE-ACTIVITY ; GLUCOSE BIOSENSOR ; CONSTRUCTION ; FUNCTIONALIZATION ; PROTEINS ; SYSTEMS ; LAYER
英文摘要A novel graphitized ordered macroporous carbon (GMC, pore size similar to 380 nm) with hierarchical mesopores (2-30 nm) and high graphitization degree was prepared by nickel-catalyzed graphitization of polystyrene arrays. The obtained GMC possessed high specific surface area, large pore volume, and good electrical conductivity, which was explored for the enzyme entrapment and biosensor fabrication by a facile method. With advantages of novel nanostructure and good electrical conductivity, direct electrochemistry of hemoglobin (a model protein) was observed on the GMC-based biocomposite with a formal potential of -0.36V (vs. Ag/AgCl) and an apparent heterogeneous electron transfer rate constant (k(s)) of 1.2 s(-1) in pH 7.0 buffer. Comparative studies revealed that GMC offered significant advantages over carbon nanotubes (CNTs) in facilitating direct electron transfer of entrapped Hb. The fabricated biosensor exhibited good sensitivity (101.6 mA cm(-2) M-1) and reproducibility, wide linear range (1-267 mu M), low detection limit (0.1 mu M), and good long-term stability for H2O2 detection. GMC proved to be a promising matrix for enzyme entrapment and biosensor fabrication, and may find wide potential applications in biomedical detection and environmental analyses. (C) 2009 Elsevier B.V. All rights reserved.
语种英语
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WOS记录号WOS:000270538400040
引用统计
被引频次:31[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/101793
专题中国科学院大连化学物理研究所
通讯作者Chen JP(陈吉平)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Liaoning Normal Univ, Fac Chem & Chem Engn, Inst Chem Functionalized Mat, Dalian 116029, Peoples R China
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GB/T 7714
Lu, Xianbo,Xiao, Yi,Lei, Zhibin,et al. Graphitized macroporous carbon microarray with hierarchical mesopores as host for the fabrication of electrochemical biosensor[J]. BIOSENSORS & BIOELECTRONICS,2009,25(1):244-247.
APA Lu, Xianbo,Xiao, Yi,Lei, Zhibin,Chen, Jiping,&陈吉平.(2009).Graphitized macroporous carbon microarray with hierarchical mesopores as host for the fabrication of electrochemical biosensor.BIOSENSORS & BIOELECTRONICS,25(1),244-247.
MLA Lu, Xianbo,et al."Graphitized macroporous carbon microarray with hierarchical mesopores as host for the fabrication of electrochemical biosensor".BIOSENSORS & BIOELECTRONICS 25.1(2009):244-247.
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