Microfabricated electrochemical gas sensor

被引：8

作者：

Gross, Pierre-Alexandre ^{[1
,2
]}

Larsen, Tom ^{[1
]}

Loizeau, Frederic ^{[1
]}

Jaramillo, Thomas ^{[3
]}

Spitzer, Denis ^{[2
]}

Pruitt, Beth ^{[1
]}

机构：

[1] Stanford Dept Mech Engn, Microsyst Lab, Stanford, CA 94305 USA

[2] UMR 3208 ISL CNRS UNISTRA, NS3E, St Louis, France

[3] Stanford Dept Chem Engn, Jaramillo Grp, Stanford, CA USA

来源：

MICRO & NANO LETTERS | 2016年 / 11卷 / 12期

关键词：

carbon compounds; microfabrication; electrochemical sensors; gas sensors; electrochemical electrodes; oxidation; reduction (chemical); ion exchange; membranes; spin coating; adhesion; dissociation; voltammetry (chemical analysis); microfabricated electrochemical gas sensor; direct gas phase detection; organic molecule; electrode; redox reaction; ion exchange membrane; proton exchange membrane; spin-coated Nafion layer; underlying SU-8 layer; water reservoir; electrochemical property; pollutant; cyclic voltammetry; CO; THIN-FILM; NAFION; NANOWIRES; CATALYST; ARRAYS; CO;

D O I：

10.1049/mnl.2016.0364

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The fabrication and working principle of an electrochemical gas sensor for direct gas phase detection of organic molecules is presented. The sensor is composed of two Pt electrodes where redox reactions can occur, and an ion exchange membrane to conduct H+ from an electrode to the other. As proton exchange membrane they used a spin-coated Nafion((R)) layer. An underlying SU-8 layer assures a double role of adhesion of the Nafion to the substrate and water reservoir to limit dehydration of the Nafion. The sensor is characterised for its electrochemical properties and tested for the detection of CO as model pollutant. The detection tests are performed in the form of cyclic voltammetry, and show that the sensor can detect the gas at the applied voltage corresponding to the oxidation potential of CO into CO2.

引用

页码：798 / 802

页数：5

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