CuO Nanoparticles from the Strongly Hydrated Ionic Liquid Precursor (ILP) Tetrabutylammonium Hydroxide: Evaluation of the Ethanol Sensing Activity

The sensing potential of CuO nanoparticles synthesized via precipitation from a water/ionic liquid precursor (ILP) mixture was investigated. The particles have a moderate surface area of 66 m2/g after synthesis, which decreases upon thermal treatment to below 5 m2/g. Transmission electron microscopy...

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Published inACS applied materials & interfaces Vol. 4; no. 2; pp. 791 - 795
Main Authors Taubert, Andreas, Stange, Franziska, Li, Zhonghao, Junginger, Mathias, Günter, Christina, Neumann, Mike, Friedrich, Alwin
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 22.02.2012
Subjects
Copper - chemistry
Electrochemical Techniques
Ethanol - analysis
Ionic Liquids - chemistry
Nanoparticles - chemistry
Nanoparticles - ultrastructure
Quaternary Ammonium Compounds - chemistry
Temperature
gas sensing
ionic liquid precursors
nanoparticles
ionic liquids
CuO
tetrabutylammonium hydroxide
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Summary:The sensing potential of CuO nanoparticles synthesized via precipitation from a water/ionic liquid precursor (ILP) mixture was investigated. The particles have a moderate surface area of 66 m2/g after synthesis, which decreases upon thermal treatment to below 5 m2/g. Transmission electron microscopy confirms crystal growth upon annealing, likely due to sintering effects. The as-synthesized particles can be used for ethanol sensing. The respective sensors show fast response and recovery times of below 10 s and responses greater than 2.3 at 100 ppm of ethanol at 200 °C, which is higher than any CuO-based ethanol sensor described so far.
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ISSN:1944-8244
1944-8252
DOI:10.1021/am201427q