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	Novel amperometric biosensor based on composite film assembled by polyelectrolyte-surfactant polymer, carbon nanotubes and hemoglobin
	Chen, Liang; Lu, Gongxuan
刊名	Sensors and actuators b-chemical
	2007-02-20
卷号	121期号:2页码:423-429
关键词	Biosensor Hydrogen peroxide Composite Hemoglobin Carbon nanotube Polyelectrolyte-surfactant
ISSN号	0925-4005
DOI	10.1016/j.snb.2006.04.067
通讯作者	Lu, gongxuan(gxlu@ns.lzb.ac.cn)
英文摘要	A novel hydrogen peroxide biosensor has been developed based on the encapsulation of hemoglobin (hb) in the composite film of carboxylic carbon nanotubes and polyelectrolyte-surfactant polymer. the direct electron transfer of the hb entrapped in the composite film was observed. the formal potential of the encapsulated hb was -0.287 v versus sce and the heterogeneous electron transfer rate constant was 0.4 s(-1) in a 0.1 m phosphate buffer solution (ph 7.0). an ft-ir spectroscopy study confirms that the secondary structure of hb encapsulated in the composite film still retains the original arrangement. it is suggested that the achieved faradic response of the hemoglobin be due to the promotion properties of carbon nanotube in electron transfer in biomembrane-like polyelectrolyte-surfactant polymer. the entrapped hb exhibited excellent electrocatalytic activity to reduce hydrogen peroxide. the properties of functional composite film, together with the bioelectrochemical catalytic activity, could make them useful in the development of bioelectronic devices and investigation of protein electrochemistry at functional interface. (c) 2006 elsevier b.v. all rights reserved.
WOS关键词	DIRECT ELECTROCHEMISTRY ; MODIFIED ELECTRODES ; BIOELECTROCHEMISTRY ; DOPAMINE ; ACID
WOS研究方向	Chemistry ; Electrochemistry ; Instruments & Instrumentation
WOS类目	Chemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000244545100011
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2382181
专题	中国科学院大学
通讯作者	Lu, Gongxuan
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Chen, Liang,Lu, Gongxuan. Novel amperometric biosensor based on composite film assembled by polyelectrolyte-surfactant polymer, carbon nanotubes and hemoglobin[J]. Sensors and actuators b-chemical,2007,121(2):423-429.
APA	Chen, Liang,&Lu, Gongxuan.(2007).Novel amperometric biosensor based on composite film assembled by polyelectrolyte-surfactant polymer, carbon nanotubes and hemoglobin.Sensors and actuators b-chemical,121(2),423-429.
MLA	Chen, Liang,et al."Novel amperometric biosensor based on composite film assembled by polyelectrolyte-surfactant polymer, carbon nanotubes and hemoglobin".Sensors and actuators b-chemical 121.2(2007):423-429.

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