High-sensitivity detection of acetaldehyde

被引：38

作者：

Giberti, A. ^{[1
,2
]}

Carotta, M. C. ^{[1
]}

Fabbri, B. ^{[1
]}

Gherardi, S. ^{[1
]}

Guidi, V. ^{[1
,2
]}

Malagu, C. ^{[1
]}

机构：

[1] Univ Ferrara, Dept Phys, I-44122 Ferrara, Italy

[2] MIST E R Scrl, I-40129 Bologna, Italy

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2012年 / 174卷

关键词：

Gas sensor; Acetaldehyde; Thick-film; THICK-FILM GAS; ETHANOL;

D O I：

10.1016/j.snb.2012.08.016

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A set of sensors based on nanostructured single and mixed metal oxides has been prepared and employed in acetaldehyde detection within 0.1-10 ppm, this range being useful for many applications. Electrical characterization has been performed in laboratory at several working temperatures, in order to obtain the optimal operating condition. ZnO working within 450-550 degrees C, was found to best respond to acetaldehyde. The response vs. concentration curves for all the sensors was a power law with an exponent of 0.5, compatible with the oxidation of acetaldehyde catalyzed by the surface. A decay in the sensor response to acetaldehyde due to humidity was observed and discussed. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：402 / 405

页数：4

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