Preparation of In₂O₃/MWCNTs Nanocomposites and their Gas-Sensing Property to Ethanol

Abstract:

In₂O₃/multi-walled carbon nanotube (MWCNT) nanocomposites containing different MWCNT contents were synthesized via direct growth of In₂O₃ nanoparticles on the functionalized MWCNTs. The nanocomposites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The results exhibited that In₂O₃ nanoparticles with a diameter of approximate 10 nm were densely decorated on the surface of the MWCNTs. The gas sensitive performance of the nanocomposites to ethanol was also investigated. It was found that In₂O₃/MWCNTs sensor showed much higher response than that of the pure In₂O₃ sensor. Moreover, the sensing mechanism was discussed.

• Periodical: Key Engineering Materials (Volumes 562-565)
• Pages: 543-548
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.562-565.543
• Online since: July 2013
• Authors: Li Zhang, Fu Bo Gu, Zhi Hua Wang, Dong Mei Han, Guang Sheng Guo
• Keywords: In₂O₃ , Multi-Walled Carbon Nanotube (MWCNT), Sensing Mechanism, Sensor

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