The influence of local glucose oxidase activity on the potential/current distribution on stainless steel: A study by the wire beam electrode method

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	The influence of local glucose oxidase activity on the potential/current distribution on stainless steel: A study by the wire beam electrode method
	W. Wang; X. Zhang; J. Wang
	2009
发表期刊	Electrochimica Acta
ISSN	0013-4686
卷号	54 期号:23 页码:5598-5604
摘要	The wire beam electrode (WBE) method was first used to study the activity of local glucose oxidase (GOD) on stainless steel surface in seawater. Glucose oxidase was immobilized in calcium alginate gel capsules, which were embedded in a layer of artificial biofilm (calcium alginate gel) on the WBE surface. The potential/current distributions on the WBE surface were mapped using a newly developed device for the WBE method in our lab. The results demonstrated that the catalysis of H(2)O(2) formation by GOD can produce local noble potential peaks and cathodic current zones on the stainless steel surface. An interesting fluctuant current distribution around cathodic zones was observed the first time. The potential and current maps showed that the enzyme heterogeneity of the artificial biofilm caused a corresponding electrochemical heterogeneity at the biofilm/metal interface. The application of the WBE method to ennoblement study enables us to observe the heterogeneous electrochemistry at biofilm/stainless steel interface directly, providing us with a powerful tool to investigate other biofilm-related processes such as microbially influenced corrosion (MIC). (C) 2009 Elsevier Ltd. All rights reserved.
部门归属	[wang, wei; zhang, xia; wang, jia] ocean univ china, coll chem & chem engn, minist educ, key lab marine chem theory & technol, qingdao 266100, peoples r china. [wang, jia] state key lab corros & protect, shenyang 110016, peoples r china.;wang, w (reprint author), ocean univ china, coll chem & chem engn, minist educ, key lab marine chem theory & technol, qingdao 266100, peoples r china;wwei@ouc.edu.cn
关键词	Wire Beam Electrode Glucose Oxidase Potential/current Distribution Hydrogen Peroxide Biofilm Scanning Electrochemical Microscopy Protective Oil Coatings Alginate Gel Capsules Corrosion Processes Oxygen Reduction Ennoblement Seawater Biofilms Immobilization Performance
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WOS记录号	WOS:000268518500039
引用统计	被引频次：42[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32383
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. Wang,X. Zhang,J. Wang. The influence of local glucose oxidase activity on the potential/current distribution on stainless steel: A study by the wire beam electrode method[J]. Electrochimica Acta,2009,54(23):5598-5604.
APA	W. Wang,X. Zhang,&J. Wang.(2009).The influence of local glucose oxidase activity on the potential/current distribution on stainless steel: A study by the wire beam electrode method.Electrochimica Acta,54(23),5598-5604.
MLA	W. Wang,et al."The influence of local glucose oxidase activity on the potential/current distribution on stainless steel: A study by the wire beam electrode method".Electrochimica Acta 54.23(2009):5598-5604.