High Response CO Sensor Based on a Polyaniline/SnO<sub>2</sub> Nanocomposite

Kai-Syuan Jian; Chi-Jung Chang; Jerry  J. Wu; Yu-Cheng Chang; Chien-Yie Tsay; Jing-Heng Chen; Tzyy-Leng Horng; Gang-Juan Lee; Lakshmanan Karuppasamy; Sambandam Anandan; Chin-Yi Chen

doi:10.3390/polym11010184

Polymers (Jan 2019)

High Response CO Sensor Based on a Polyaniline/SnO<sub>2</sub> Nanocomposite

Kai-Syuan Jian,
Chi-Jung Chang,
Jerry J. Wu,
Yu-Cheng Chang,
Chien-Yie Tsay,
Jing-Heng Chen,
Tzyy-Leng Horng,
Gang-Juan Lee,
Lakshmanan Karuppasamy,
Sambandam Anandan,
Chin-Yi Chen

Affiliations

Kai-Syuan Jian: Department of Materials Science and Engineering, Feng Chia University, Taichung 407, Taiwan
Chi-Jung Chang: Department of Chemical Engineering, Feng Chia University, Taichung 407, Taiwan
Jerry J. Wu: Department of Environmental Engineering and Science, Feng Chia University, Taichung 407, Taiwan
Yu-Cheng Chang: Department of Materials Science and Engineering, Feng Chia University, Taichung 407, Taiwan
Chien-Yie Tsay: Department of Materials Science and Engineering, Feng Chia University, Taichung 407, Taiwan
Jing-Heng Chen: Department of Photonics, Feng Chia University, Taichung 407, Taiwan
Tzyy-Leng Horng: Department of Applied Mathematics, Feng Chia University, Taichung 407, Taiwan
Gang-Juan Lee: Department of Environmental Engineering and Science, Feng Chia University, Taichung 407, Taiwan
Lakshmanan Karuppasamy: Department of Environmental Engineering and Science, Feng Chia University, Taichung 407, Taiwan
Sambandam Anandan: Nanomaterials and Solar Energy Conversion Laboratory, Department of Chemistry, National Institute of Technology, Trichy 620015, India
Chin-Yi Chen: Department of Materials Science and Engineering, Feng Chia University, Taichung 407, Taiwan

DOI: https://doi.org/10.3390/polym11010184
Journal volume & issue: Vol. 11, no. 1
p. 184

Abstract

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A polyaniline (PANI)/tin oxide (SnO2) composite for a CO sensor was fabricated using a composite film composed of SnO2 nanoparticles and PANI deposition in the present study. Tin oxide nanoparticles were synthesized by the sol-gel method. The SnO2 nanoparticles provided a high surface area to significantly enhance the response to the change in CO concentration at low operating temperature (<75 °C). The excellent sensor response was mainly attributed to the relatively good properties of PANI in the redox reaction during sensing, which produced a great resistance difference between the air and CO gas at low operating temperature. Therefore, the combination of n-type SnO2 nanoparticles with a high surface area and a thick film of conductive PANI is an effective strategy to design a high-performance CO gas sensor.

Published in Polymers

ISSN: 2073-4360 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Organic chemistry
Website: http://www.mdpi.com/journal/polymers/

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