pH sensors based on polypyrrole nanowire arrays

被引：45

作者：

Sulka, Grzegorz D. ^{[1
]}

Hnida, Katarzyna ^{[1
]}

Brzozka, Agnieszka ^{[2
]}

机构：

[1] Jagiellonian Univ, Dept Phys Chem & Electrochem, PL-30060 Krakow, Poland

[2] AGH Univ Sci & Technol, Fac Nonferrous Met, PL-30059 Krakow, Poland

来源：

ELECTROCHIMICA ACTA | 2013年 / 104卷

关键词：

Anodization; Anodic aluminum oxide (AAO); Polypyrrole (PPy); Nanowire arrays; pH; CONDUCTING POLYMERS; IMPEDIMETRIC IMMUNOSENSOR; ELECTROCHEMICAL SENSORS; CHEMICAL SENSORS; NOBEL LECTURE; OXALIC-ACID; ELECTRODES; ION; ELECTROPOLYMERIZATION; TEMPERATURES;

D O I：

10.1016/j.electacta.2012.12.064

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The hydroquinone monosulfonate-doped polypyrrole (PPy-HQS) nanowires were successfully fabricated by potentiostatic electropolymerization of pyrrole (Py) inside the pores of home-made through-hole anodic aluminum oxide (AAO) membranes. The AAO templates with a nominal pore diameter of 80 nm were prepared by a two-step anodization process. The potentiostatic electropolymerization of HQS-doped polymer nanowires was carried out in 0.1 M NaClO4, or 0.1 M LiClO4 or 0.1 M citric acid containing 0.05 M pyrrole and 0.05 M potassium hydroquinone monosulfonate. The synthesized PPy-HQS nanowire arrays were tested as potential potentiometric pH sensors. It was found that pH sensors based on PPy-HQS nanowires exhibited better electrochemical performance toward pH sensing than those based on PPy-HQS thin films. The best potentiometric response to pH changes and a very good stability in time showed the sensor based on the PPy-HQS nanowires polymerized in a 0.1 M LiClO4 solution. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：536 / 541

页数：6

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