Ionic liquid-polymer electrolyte for amperometric solid-state NO2 sensor

被引：30

作者：

Nadherna, Martina ^{[1
,2
]}

Opekar, Frantisek ^{[2
]}

Reiter, Jakub ^{[1
]}

机构：

[1] ASCR, Inst Inorgan Chem, Vvi, Husinec Rez 25068, Czech Republic

[2] Charles Univ Prague, Dept Analyt Chem, Fac Sci, Prague 12840 2, Czech Republic

来源：

ELECTROCHIMICA ACTA | 2011年 / 56卷 / 16期

关键词：

Amperometric gas sensor; Solid-state sensor; Ionic liquid; Nitrogen dioxide; Gold minigrid; GAS SENSORS; NITROGEN-DIOXIDE; NITRIC-OXIDE; COMPOSITE;

D O I：

10.1016/j.electacta.2011.04.022

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A new ionic liquid-polymer electrolyte was successfully tested in the planar amperometric solid-state sensor sensitive towards nitrogen dioxide. The electrolyte consists of 1-butyl-3-methylimidazolium hexafluorophosphate (BMIPF6) and poly(ethylene glycol) methyl ether methacrylate (PEGMEMA) in the ratio 57:43 mol.% and exhibits ionic conductivity 1.6 x 10(-4) S cm(-1) at 20 degrees C. high electrochemical stability (over 4V on gold or glassy carbon) and thermal stability (over 230 degrees C). The analyte, gaseous nitrogen dioxide in air, was determined using the electrochemical reduction at -900 mV vs. Pt/air on gold minigrid indicating electrode with Pt/air as a reference electrode. The sensor response is linear in the NO2 concentration range 0.3-1.1 ppm and is reproducible and long-term stable. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：5650 / 5655

页数：6

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