Gold nanoparticle/carbon nanotube hybrids as an enhanced material for sensitive amperometric determination of tryptophan

	Gold nanoparticle/carbon nanotube hybrids as an enhanced material for sensitive amperometric determination of tryptophan
	Guo YJ ; Guo SJ ; Fang YX ; Dong SJ
刊名	electrochimica acta
	2010
卷号	55 期号:12 页码:3927-3931
关键词	CARBON-PASTE ELECTRODE PERFORMANCE LIQUID-CHROMATOGRAPHY AMINO-ACIDS VOLTAMMETRIC DETERMINATION CAPILLARY-ELECTROPHORESIS SELECTIVE DETERMINATION FACILE PREPARATION MASS-SPECTROMETRY TYROSINE BEER
ISSN号	0013-4686
通讯作者	dong sj
中文摘要	in this work, a highly sensitive electrochemical sensor for the determination of tryptophan (tip) was fabricate by electrodeposition of gold nanoparticles (aunps) onto carbon nanotube (cnt) films pre-cast on a glassy carbon electrode (gce), forming an aunp-cnt composite-modified gce (aunp-cnt/gce). scanning electron microscopy (sem), electrochemical impedance spectroscopy (eis) and cyclic voltammetry (cv) were used for the surface analysis of the electrode. the results indicate that the hybrid nanomaterials induced a substantial decrease in the overpotential of the tip oxidation reaction and exhibited a remarkable synergistic effect on the electrocatalytic activity toward the oxidation of trp. in phosphate buffer solution (ph 7.4), the modified electrode showed excellent analytical performance for the amperometric determination of trp. the peak currents possess a linear relationship with the concentration of tip in the range of 30 nm to 2.5 mu m. and the detection limit is 10 nm (s/n = 3). in addition, the modified electrode was used to determine trp concentration in pharmaceutical samples with satisfactory results. (c) 2010 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:000277498000013
公开日期	2012-06-06
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/43744]
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	Guo YJ,Guo SJ,Fang YX,et al. Gold nanoparticle/carbon nanotube hybrids as an enhanced material for sensitive amperometric determination of tryptophan[J]. electrochimica acta,2010,55(12):3927-3931.
APA	Guo YJ,Guo SJ,Fang YX,&Dong SJ.(2010).Gold nanoparticle/carbon nanotube hybrids as an enhanced material for sensitive amperometric determination of tryptophan.electrochimica acta,55(12),3927-3931.
MLA	Guo YJ,et al."Gold nanoparticle/carbon nanotube hybrids as an enhanced material for sensitive amperometric determination of tryptophan".electrochimica acta 55.12(2010):3927-3931.