期刊名称：International Journal of Advances in Engineering and Management
电子版ISSN：2395-5252
出版年度：2021
卷号：3
期号：12
页码：491-496
DOI：10.35629/5252-0312274278
语种：English
出版社：IJAEM JOURNAL
摘要：Sol-gel method is employed to prepare TiO2 nanopowder using titanium isopropoxide (TTIP) and methanol as starting materials. The obtained TiO2 specimen is annealed at 5000C for 1 hour in air. Polyaniline doped with TiO2 is obtained by adding 0.2 g of TiO2 nanopowder annealed at 5000C during the preparation of polyaniline by oxidative polymerization. Therefore polyaniline (PANI)/TiO2- 5000C nanocomposite is obtained. The prepared TiO2 nanopowder is in the form of pure anatase phase as revealed by X-ray diffraction pattern. The formation of PANI/TiO2 nanocomposite is confirmed by the presence of TiO2 peaks in polyaniline. Energy band gap value is calculated using UV spectrum. Hence the energy band gap value of PANI/TiO2-5000C nanocomposite is 2.70 eV. Surface morphology of the specimen is studied by Scanning electron microscopy (SEM) and the bonds present in PANI/TiO2-5000C nanocomposite are depicted by Raman spectroscopy. LPG gas sensing of PANI/TiO2-5000C nanocomposite is studied. The gas sensing studies shows that PANI/TiO2-5000C nanocomposite exhibits sensitivity towards LPG gas at room temperature and its sensitivity increases with increase in temperature. PANI/TiO2-5000C nanocomposite also shows sensitivity towards LPG gas in the presence of other gases at room temperature and at 2000C. Therefore PANI/TiO2-5000C nanocomposite may play an important role for industrial applications.
