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	Electrodeposition of bismuth onto glassy carbon electrodes from nitrate solutions
	Yang, ML; Hu, ZB
刊名	Journal of electroanalytical chemistry
	2005-09-01
卷号	583期号:1页码:46-55
关键词	Electrodeposition Bismuth Glassy carbon electrode Nucleation Growth
ISSN号	0022-0728
DOI	10.1016/j.jelechem.2005.04.019
通讯作者	Hu, zb()
英文摘要	The electrodeposition of bismuth on glassy carbon electrodes (gces) from nitrate solutions was studied by cyclic voltammetry, chronoamperometry, and scanning electron microscopy. cyclic voltammograms exhibit a crossover between the cathodic and anodic branches, characteristic of the formation of bismuth nuclei on gces. the bismuth electrodeposition on gces is a diffusion-controlled reaction. the current transients for bismuth electrodeposition were analyzed according to the scharifker-hills models, the scharifker's general equation and the heerman tarallo equation. for i and 5 mm bi3+, the nucleation and growth mechanism is independent of deposition potential and follows the three-dimensional (3d) progressive nucleation and growth model. however, a deposition potential dependence of nucleation and growth mechanism can be found in the cases of 10 and 20 mm bi3+. the quantitative analysis by the two equations shows that a and n-0 exponentially grow with the increase of deposition potential, while d decays in an exponential mode. it should be noted that the two equations produced the very close n-0 and d values and the distinct a values (especially at -300 and -350 mv). however, the critical size of the nuclei (n-c) estimated by using the two equations was all zero. both of the equations can be used for describing the electrodeposition of bismuth on gces in this work. sem images show that high deposition potential as well as high concentration can enhance the nuclei density of bismuth on gces and favors the formation of small crystallites with a less defined structure. (c) 2005 published by elsevier b.v.
WOS关键词	IRREVERSIBLY ADSORBED BISMUTH ; ANODIC-STRIPPING VOLTAMMETRY ; DIFFUSION-CONTROLLED GROWTH ; X-RAY-SCATTERING ; CATHODIC ELECTROCHEMICAL DETECTION ; FILM ELECTRODE ; AU(111) ELECTRODES ; ACTIVE-SITES ; SILVER ELECTROCRYSTALLIZATION ; REVERSIBLE ELECTRODEPOSITION
WOS研究方向	Chemistry ; Electrochemistry
WOS类目	Chemistry, Analytical ; Electrochemistry
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000231523700005
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2377861
专题	中国科学院大学
通讯作者	Hu, ZB
作者单位	Chinese Acad Sci, Grad Sch, Coll Chem & Chem Engn, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yang, ML,Hu, ZB. Electrodeposition of bismuth onto glassy carbon electrodes from nitrate solutions[J]. Journal of electroanalytical chemistry,2005,583(1):46-55.
APA	Yang, ML,&Hu, ZB.(2005).Electrodeposition of bismuth onto glassy carbon electrodes from nitrate solutions.Journal of electroanalytical chemistry,583(1),46-55.
MLA	Yang, ML,et al."Electrodeposition of bismuth onto glassy carbon electrodes from nitrate solutions".Journal of electroanalytical chemistry 583.1(2005):46-55.

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