Preparation and characterization of multiwalled carbon nanotube/In2O3 composites |
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| Affiliation: | 1. Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA 93106, USA;2. Materials Department, University of California, Santa Barbara, CA 93106, USA;3. Paul-Drude-Insitut für Festkörperelektronik, Hausvogteiplatz 5-7, 10117 Berlin, Germany;1. IMEM-CNR Institute, Area delle Scienze 37/A, 43124 Parma, Italy;2. Leibniz Institute for Crystal Growth (IKZ), Max-Born-Str. 2, 12489 Berlin, Germany;3. Dept. of Mathematical, Physical and Computer Sciences, Univ. of Parma, Area delle Scienze 7/A, 43124 Parma, Italy |
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| Abstract: | We have prepared multiwalled carbon nanotube (MWCNT)/In2O3 composites using a simple impregnation method. The precursor compound indium(III) chloride (InCl3) was used to cover the surface of MWCNTs and distilled water was used as solvent. The applied mass ratio was 4:1 (In2O3/MWCNT), and during the calcination process different temperatures (300, 350 and 400 °C) were investigated. The produced materials were characterized by X-ray diffraction, energy-dispersive X-ray spectroscopy, Raman spectroscopy, Fourier transform infrared spectroscopy, transmission and scanning electron microscopy, and a thermogravimetric analysis was executed also. The average thickness of the produced surface layer and the average sizes of the In2O3 particles were calculated with the Scherrer formula and the ImageJ-program. The results show that the heat treatment temperature affected the characteristic morphology and the crystal structure of the as-prepared composite. These multiwalled carbon nanotube-based composites are promising candidates as gas sensors and catalyst. |
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