Electrochemically controlled growth of silver nanocrystals on graphene thin film and applications for efficient nonenzymatic H2O2 biosensor

	Electrochemically controlled growth of silver nanocrystals on graphene thin film and applications for efficient nonenzymatic H2O2 biosensor
	Zhong LJ ; Gan SY ; Fu XG ; Li FH ; Han DX ; Guo LP ; Niu L
刊名	electrochimica acta
	2013
卷号	89 页码:222-228
关键词	HYDROGEN-PEROXIDE DETECTION ONE-STEP PREPARATION ONE-POT SYNTHESIS AG NANOPARTICLES SUBSEQUENT DECORATION GLUCOSE DETECTION GRAPHITE OXIDE ELECTRIC-FIELD NANOSHEETS SHEETS
ISSN号	0013-4686
通讯作者	han dx
中文摘要	we report a double pulse electrochemical method to controllably prepare silver nanocrystals (agncs) on graphene thin film electrode for fabricating a high performance h2o2 biosensor. the approach relies on two potential pulses that can independently control the nucleation and subsequent growth processes of agncs on graphene substrate. this method also allows the observation of agncs growing from a particle shape to a nanoplate form by increasing the growth time with the maximum lateral scale up to micrometer scale range. a proposed mechanism for these silver nanoplates (agnpls) formation was the oriented growth of small agncs and two-dimensional graphene template inducing effect. such obtained graphene-agnpls hybrid thin films exhibit remarkable electrocatalytical activity toward h2o2 electrochemical reduction. further fabricated nonenzymatic h2o2 biosensor displays a fast amperometric response time of less than 2s and a good linear range from 2 x 10(-5) m to 1 x 10(-2) m with an estimated detection limit of 3 x 10(-6) m. this biosensor also exhibits good stability (rsd, 13%), and high sensitivity of 183.5 mu a cm(-2) mm(-1) as well as high selectivity. the results show that this powerful double pulse potential electrochemical method could enable new opportunities in controllable preparation of multifarious nanomaterials on graphene substrate for their future applications. (c) 2012 elsevier ltd. all rights reserved.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000315558200029
公开日期	2014-04-16
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/50057]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Zhong LJ,Gan SY,Fu XG,et al. Electrochemically controlled growth of silver nanocrystals on graphene thin film and applications for efficient nonenzymatic H2O2 biosensor[J]. electrochimica acta,2013,89:222-228.
APA	Zhong LJ.,Gan SY.,Fu XG.,Li FH.,Han DX.,...&Niu L.(2013).Electrochemically controlled growth of silver nanocrystals on graphene thin film and applications for efficient nonenzymatic H2O2 biosensor.electrochimica acta,89,222-228.
MLA	Zhong LJ,et al."Electrochemically controlled growth of silver nanocrystals on graphene thin film and applications for efficient nonenzymatic H2O2 biosensor".electrochimica acta 89(2013):222-228.