Preparation and characterization of polyaniline/indium(III) oxide (PANi/In2O3) nanocomposite thin film

Xiaolei Yan; Guangzhong Xie; Xiaosong Du; Huiling Tai; Yadong Jiang

doi:10.1117/12.831026

21 May 2009 Preparation and characterization of polyaniline/indium(III) oxide (PANi/In₂O₃) nanocomposite thin film

Xiaolei Yan, Guangzhong Xie, Xiaosong Du, Huiling Tai, Yadong Jiang

Proceedings Volume 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 72823C (2009) https://doi.org/10.1117/12.831026
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

In the last few decades, conductive polymers such as polyaniline, polypyrrole, and polythiophene have been widely investigated as effective sensitive materials for chemical gas sensors. Among them, polyaniline (PANI) is frequently used because of its ease and cheap of synthesis, environmental stability and intrinsic redox reaction. However, problems with these conductive polymers include their low processing ability, poor mechanical strength and chemical stability. There are tremendous approaches for the enhancement of mechanical strength and chemical stability of organic materials by combining organic materials with inorganic counterparts in nano-size to form composite materials..which would optimize the characteristics of gas sensors. In the paper, polyaniline/Indium(III) Oxide(PANi/In2O3) nanocomposite thin films was prepared on a quartz substrate by combination techniques of electrostatic self-assembly and in situ chemical oxidation polymerization at 10°C. Infrared spectrum analysis (IR) of the composite and scanning electron microscope(SEM) of nanocomposite thin films were performed. PANi/In₂O₃ nanocomposite thin film gas sensor was fabricated on AT-Cut quartz crystal microbalance(QCM) of Ag electrodes, and the sensitive properties of gas sensor to CH₄ and CO are characterized and analyzed. The results indicate that PANi/In₂O₃ thin film gas sensor has good linear sensitive property to CH₄ and CO, and is more sensitive to CH₄, i.e., the sensitivity is 0.386Hz per ppm when the sensor is exposed to 500 ppm CH₄ while only 0.16Hz per ppm to the same concentration of CO. Such sensitive properties of gas sensor in the constant concentration of CH₄ at different temperature are also characterized. The result shows that temperature would affect the sensitive property of gas sensor.

Citation Download Citation

Xiaolei Yan, Guangzhong Xie, Xiaosong Du, Huiling Tai, and Yadong Jiang "Preparation and characterization of polyaniline/indium(III) oxide (PANi/In₂O₃) nanocomposite thin film", Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 72823C (21 May 2009); https://doi.org/10.1117/12.831026

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available