Studies on preparation and properties of polyprrole uricase electrode

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	Studies on preparation and properties of polyprrole uricase electrode
	Kan, JQ ; Mu, SL ; Li, YF
刊名	BULLETIN OF ELECTROCHEMISTRY
	1998-02-01
卷号	14 期号:2 页码:74-77
关键词	Polypyrrole Uricase X-ray Photoelectron Spectroscopy Stability
ISSN号	0256-1654
英文摘要	Three types of polypyrrole uricase electrodes were prepared by means of the spontaneous adsorption of uricase at open circuit, immobilization of uricase at an applied negative potential or at an applied positive potential respectively on the polypyrrole films. The initial response current of the enzyme electrode formed at the positive potential was the highest and that of the enzyme electrode formed at the negative potential was the loa est among the three types of electrodes. The response current of the enzyme electrode formed at positive potential increased with time first, thee decreased and slowly to form a current platform. The effective life. time of this electrode was over 60 days. The XPS experiments reveal that a peak of C-ls with 285.9 eV for the polypyrrole film, and two peaks of C-ls with 285.9 eV and 288.9 eV for the freshly prepared polypyrrole uricase electrode were observed. The latter was caused by the chemical shift in XPS of C-ls in polypyrrole due to the effect of the immobilized uricase, The pH effect on the maximum reaction rate (i.e. maximum response current) of the enzyme electrode indicates that the immobilized uricase has a basic ionizing group involved in the catalytic activity.
语种	英语
出版者	CENTRAL ELECTROCHEM RES INST
WOS记录号	WOS:000075312900006
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/74385]
专题	中国科学院化学研究所
作者单位	1.Yangzhou Univ, Teachers Coll, Dept Chem, Yangzhou 225002, Peoples R China 2.Chinese Acad Sci, Inst Chem, Lab Organ Solids, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Kan, JQ,Mu, SL,Li, YF. Studies on preparation and properties of polyprrole uricase electrode[J]. BULLETIN OF ELECTROCHEMISTRY,1998,14(2):74-77.
APA	Kan, JQ,Mu, SL,&Li, YF.(1998).Studies on preparation and properties of polyprrole uricase electrode.BULLETIN OF ELECTROCHEMISTRY,14(2),74-77.
MLA	Kan, JQ,et al."Studies on preparation and properties of polyprrole uricase electrode".BULLETIN OF ELECTROCHEMISTRY 14.2(1998):74-77.