Layer-by-layer thin film-coated electrodes for electrocatalytic determination of ascorbic acid

被引：21

作者：

Wang, Baozhen ^{[1
]}

Noguchi, Takio ^{[1
]}

Anzai, Jun-ichi ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Pharmaceut Sci, Aoba Ku, Sendai, Miyagi 9808578, Japan

来源：

TALANTA | 2007年 / 72卷 / 02期

关键词：

LbL film; ascorbic acid; ferricyanide ion; electrocatalysis;

D O I：

10.1016/j.talanta.2006.10.044

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Multilayer thin films composed of poly(allylamine hydrochloride) (PAH) and carboxymethyl cellulose (CMC) have been prepared on the surface of a gold (An) disk electrode by a layer-by-layer deposition of PAH and CMC and ferricyanide ions ([Fe(CN)(6)](3-)) were confined in the film. [Fe(CN)(6)](3-) ions can be successfully confined in the films from weakly acidic or neutral [Fe(CN)(6)](3-) solutions, while, in basic solution, [Fe(CN)(6)](3-) ion was not confined. The [Fe(CN)(6)](3-) ion-confined An electrode showed clear redox peaks in the cyclic voltammogram around 0.35 V versus Ag/AgCl. The amounts of [Fe(CN)(6)](3-) ions confined in the films depended on the thickness of the films or the number of layers in the LbL films. The (Fe(CN)(6)](3-) ion-confined Au electrode was used for electrocatalytic determination of ascorbic acid in the concentration range of 1-50 mM. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：415 / 418

页数：4

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