Chemically modified glassy carbon electrode for electrochemical sensing paracetamol in acidic solution

	Chemically modified glassy carbon electrode for electrochemical sensing paracetamol in acidic solution
	Yang GC ; Wang L ; Jia JB ; Zhou DF ; Li DF
刊名	journal of solid state electrochemistry
	2012
卷号	16 期号:9 页码:2967-2977
关键词	INDIUM TIN OXIDE DIAZONIUM SALTS COVALENT MODIFICATION VOLTAMMETRIC DETERMINATION SENSITIVE DETECTION GRAPHITE ELECTRODE AQUEOUS-SOLUTIONS NITRO PRECURSORS LIVER-DAMAGE REDUCTION
ISSN号	1432-8488
通讯作者	yang gc
中文摘要	different organic molecules were covalently grafted on glassy carbon electrodes (gces) by an electrochemical reduction or potentiostatic process of several in situ-generated diazonium cations in acidic aqueous solution containing nano2. the cyclic voltammetry implemented in 0.1 m kcl aqueous solution containing 5 mm fe(cn) (6) (3-) or ru(nh3) (6) (3+) confirmed the blocking properties of the modified gces. the electrochemical impedance spectroscopy (eis) performed in 0.1 m kcl aqueous solution containing 5 mm fe(cn) (6) (3-/4-) was used to measure the surface coverage of the modifiers on gce; the results showed that the modified layers on gces are very compact. the linear sweep voltammetry (lsv) was employed to investigate the electrochemical sensing properties of the bare and modified gces toward paracetamol (pct) in sulfuric acid solution of ph 1.02, and the corresponding calibration plots were obtained, respectively. the results indicated there is an oxidation peak of pct in the linear sweep voltammograms on the bare and modified gces with the active terminal groups such as -opo3h2, -so3h, -cooh, and so on, but do not appear on gces modified with the inert terminal groups such as -no2 and -br. these imply that the gces modified with the active terminal groups display an electrochemical behavior like bulk gce; however, those with the inert terminal groups present an electrochemical behavior like microelectrode. the varying electrochemical sensitivity of all the electrodes toward pct was explained according to electronegativity and pk (a) of the terminal groups of the modifiers on the electrodes and hydrogen bond between the modifiers and pct. apparent standard rate constants of pct oxidation reaction on the bare and modified gces were obtained from the laviron's approach.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000307754900015
公开日期	2013-04-23
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/47978]
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	Yang GC,Wang L,Jia JB,et al. Chemically modified glassy carbon electrode for electrochemical sensing paracetamol in acidic solution[J]. journal of solid state electrochemistry,2012,16(9):2967-2977.
APA	Yang GC,Wang L,Jia JB,Zhou DF,&Li DF.(2012).Chemically modified glassy carbon electrode for electrochemical sensing paracetamol in acidic solution.journal of solid state electrochemistry,16(9),2967-2977.
MLA	Yang GC,et al."Chemically modified glassy carbon electrode for electrochemical sensing paracetamol in acidic solution".journal of solid state electrochemistry 16.9(2012):2967-2977.