Acetone gas sensing properties of a multiple-networked Fe2O3-functionalized CuO nanorod sensor

Sunghoon Park; Hyejoon Kheel; Gun Joo Sun; Taegyung Ko; Wan In Lee; Chongmu Lee

doi:10.1155/2015/830127

Acetone gas sensing properties of a multiple-networked Fe₂O₃-functionalized CuO nanorod sensor

Sunghoon Park, Hyejoon Kheel, Gun Joo Sun, Taegyung Ko, Wan In Lee, Chongmu Lee

Inha University

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

Fe₂O₃-decorated CuO nanorods were prepared by Cu thermal oxidation followed by Fe₂O₃ decoration via a solvothermal route. The acetone gas sensing properties of multiple-networked pristine and Fe₂O₃-decorated CuO nanorod sensors were examined. The optimal operating temperature of the sensors was found to be 240°C. The pristine and Fe₂O₃-decorated CuO nanorod sensors showed responses of 586 and 1,090%, respectively, to 1,000 ppm of acetone at 240°C. The Fe₂O₃-decorated CuO nanorod sensor also showed faster response and recovery than the latter sensor. The acetone gas sensing mechanism of the Fe₂O₃-decorated CuO nanorod sensor is discussed in detail. The origin of the enhanced sensing performance of the multiple-networked Fe₂O₃-decorated CuO nanorod sensor to acetone gas was explained by modulation of the potential barrier at the Fe₂O₃-CuO interface, highly catalytic activity of Fe₂O₃ for acetone oxidation, and the creation of active adsorption sites by Fe₂O₃ nanoparticles.

Original language	English
Article number	830127
Journal	Journal of Nanomaterials
Volume	2015
DOIs	https://doi.org/10.1155/2015/830127
State	Published - 2015

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© 2015 Sunghoon Park et al.

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@article{5ac65f0c98594021a2bedd58fe42def4,

title = "Acetone gas sensing properties of a multiple-networked Fe2O3-functionalized CuO nanorod sensor",

abstract = "Fe2O3-decorated CuO nanorods were prepared by Cu thermal oxidation followed by Fe2O3 decoration via a solvothermal route. The acetone gas sensing properties of multiple-networked pristine and Fe2O3-decorated CuO nanorod sensors were examined. The optimal operating temperature of the sensors was found to be 240°C. The pristine and Fe2O3-decorated CuO nanorod sensors showed responses of 586 and 1,090\%, respectively, to 1,000 ppm of acetone at 240°C. The Fe2O3-decorated CuO nanorod sensor also showed faster response and recovery than the latter sensor. The acetone gas sensing mechanism of the Fe2O3-decorated CuO nanorod sensor is discussed in detail. The origin of the enhanced sensing performance of the multiple-networked Fe2O3-decorated CuO nanorod sensor to acetone gas was explained by modulation of the potential barrier at the Fe2O3-CuO interface, highly catalytic activity of Fe2O3 for acetone oxidation, and the creation of active adsorption sites by Fe2O3 nanoparticles.",

author = "Sunghoon Park and Hyejoon Kheel and Sun, \{Gun Joo\} and Taegyung Ko and Lee, \{Wan In\} and Chongmu Lee",

note = "Publisher Copyright: {\textcopyright} 2015 Sunghoon Park et al.",

year = "2015",

doi = "10.1155/2015/830127",

language = "English",

volume = "2015",

journal = "Journal of Nanomaterials",

issn = "1687-4110",

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T1 - Acetone gas sensing properties of a multiple-networked Fe2O3-functionalized CuO nanorod sensor

AU - Park, Sunghoon

AU - Kheel, Hyejoon

AU - Sun, Gun Joo

AU - Ko, Taegyung

AU - Lee, Wan In

AU - Lee, Chongmu

PY - 2015

Y1 - 2015

N2 - Fe2O3-decorated CuO nanorods were prepared by Cu thermal oxidation followed by Fe2O3 decoration via a solvothermal route. The acetone gas sensing properties of multiple-networked pristine and Fe2O3-decorated CuO nanorod sensors were examined. The optimal operating temperature of the sensors was found to be 240°C. The pristine and Fe2O3-decorated CuO nanorod sensors showed responses of 586 and 1,090%, respectively, to 1,000 ppm of acetone at 240°C. The Fe2O3-decorated CuO nanorod sensor also showed faster response and recovery than the latter sensor. The acetone gas sensing mechanism of the Fe2O3-decorated CuO nanorod sensor is discussed in detail. The origin of the enhanced sensing performance of the multiple-networked Fe2O3-decorated CuO nanorod sensor to acetone gas was explained by modulation of the potential barrier at the Fe2O3-CuO interface, highly catalytic activity of Fe2O3 for acetone oxidation, and the creation of active adsorption sites by Fe2O3 nanoparticles.

AB - Fe2O3-decorated CuO nanorods were prepared by Cu thermal oxidation followed by Fe2O3 decoration via a solvothermal route. The acetone gas sensing properties of multiple-networked pristine and Fe2O3-decorated CuO nanorod sensors were examined. The optimal operating temperature of the sensors was found to be 240°C. The pristine and Fe2O3-decorated CuO nanorod sensors showed responses of 586 and 1,090%, respectively, to 1,000 ppm of acetone at 240°C. The Fe2O3-decorated CuO nanorod sensor also showed faster response and recovery than the latter sensor. The acetone gas sensing mechanism of the Fe2O3-decorated CuO nanorod sensor is discussed in detail. The origin of the enhanced sensing performance of the multiple-networked Fe2O3-decorated CuO nanorod sensor to acetone gas was explained by modulation of the potential barrier at the Fe2O3-CuO interface, highly catalytic activity of Fe2O3 for acetone oxidation, and the creation of active adsorption sites by Fe2O3 nanoparticles.

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DO - 10.1155/2015/830127

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SN - 1687-4110

VL - 2015

JO - Journal of Nanomaterials

JF - Journal of Nanomaterials

M1 - 830127

ER -

Acetone gas sensing properties of a multiple-networked Fe₂O₃-functionalized CuO nanorod sensor

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