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	Tunable activity in electrochemical reduction of oxygen by gold-polyaniline porous nanocomposites
	Song, Jixia1,2; Yuan, Junhua1,2,3; Li, Fei1,2; Han, Dongxue1,2; Song, Jiangfeng1,2; Niu, Li1,2
刊名	Journal of solid state electrochemistry
	2010-10-01
卷号	14期号:10页码:1915-1922
关键词	Porous material Gold-polyaniline nanocomposites Oxygen reduction reaction Tunable electrocatalysis Gold oxide
ISSN号	1432-8488
DOI	10.1007/s10008-010-1024-x
通讯作者	Niu, li(lniu@ciac.jl.cn)
英文摘要	Oxygen electrochemical reduction on gold-polyaniline (au-pani) porous nanocomposite-modified glassy carbon electrode in basic media was described. the as-prepared au-pani porous nanocomposite showed superior tunable activity for electrochemical reduction of oxygen. the specific surface area of au-pani porous nanocomposites was evaluated to be about 11.3 m(2) g(-1) through a convenient voltammetric approach. rotating ring-disk electrode experiments further demonstrated the number of electrons exchanged in oxygen reduction increased from 2e to 4e with increasing the trigger potential from 300, to 500, 700 mv. the tunable activity in electrochemical reduction of oxygen was achieved as a result of positive potential-induced formation and reduction of au surface oxide. however, the tunable oxygen reduction reaction is fit for applying potential in a linear positive-going potential sweep. irreversible orr tunability was found after a more active surface formed at 700 mv. to optimize the applied potential window on these au-based porous materials has potential applications such as in electrochemical sensing, fuel cells, or getting rid of the interference from the coexisted substances.
WOS关键词	IMPEDANCE SPECTROSCOPY ; NANOPOROUS AU ; NOBLE-METALS ; THIN-FILMS ; ELECTRODES ; NANOPARTICLES ; NANOSTRUCTURES ; OXIDATION ; GLUCOSE ; NANOWIRES
WOS研究方向	Electrochemistry
WOS类目	Electrochemistry
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000280092300026
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2410423
专题	中国科学院大学
通讯作者	Niu, Li
作者单位	1.Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Univ, Changchun 130022, Peoples R China 3.Zhejiang Normal Univ, Coll Chem & Life Sci, Jinhua 321004, Peoples R China
推荐引用方式 GB/T 7714	Song, Jixia,Yuan, Junhua,Li, Fei,et al. Tunable activity in electrochemical reduction of oxygen by gold-polyaniline porous nanocomposites[J]. Journal of solid state electrochemistry,2010,14(10):1915-1922.
APA	Song, Jixia,Yuan, Junhua,Li, Fei,Han, Dongxue,Song, Jiangfeng,&Niu, Li.(2010).Tunable activity in electrochemical reduction of oxygen by gold-polyaniline porous nanocomposites.Journal of solid state electrochemistry,14(10),1915-1922.
MLA	Song, Jixia,et al."Tunable activity in electrochemical reduction of oxygen by gold-polyaniline porous nanocomposites".Journal of solid state electrochemistry 14.10(2010):1915-1922.

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