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- Title
Optical Properties of in-situ Chemically Synthesized PANI-TiO2 Nanocomposites.
- Authors
Sharma, Ajay Kumar; Vyas, Rishi; Jain, Praveen Kumar Jain; Chand, Umesh; Jain, Vipin Kumar
- Abstract
The present manuscript details on the synthesis of (PANI)1 – x(TiO2)x nanocomposite (x = 0, 0.02, 0.04, 0.06, 0.08, 0.10) using an in-situ chemical oxidation polymerization of aniline using ammonium peroxide sulfate (APS) as an oxidant in presence of colloidal anatase TiO2 nanoparticles at 0-5 °C in air. The X-ray diffraction of these specimens revealed amorphous nature of polyaniline which did not change with the addition of TiO2 nanoparticles during polymerization process. The selected area electron diffraction (SAED) pattern obtained from TEM also indicated the amorphous nature of polyaniline. The TiO2 nanoparticles exhibit diffraction from multiple lattice planes originating from polycrystalline nature of nanoparticles. The SAED pattern corresponding to the nanocomposite displays lattice planes showing inter planar spacing of 3.56 Å resulting from (101) lattice planes of TiO2 nanoparticles. To study the vibration mode of PANI and PANI-TiO2 nanocomposites, Raman spectra was observed. Absorption spectra of the nanocomposite samples have been taken using UV-VIS-NIR spectrophotometer (Varian Cary 5000). The band gap energy (Eg) of the nanocomposites was determined using Talc’s relationship. As the content of TiO2 was increased in the polymer matrix, the shift of the optical band gap was observed
- Subjects
OPTICAL properties; ELECTRON diffraction; RAMAN spectroscopy; BAND gaps; AMMONIUM sulfate; OXIDIZING agents
- Publication
Journal of Nano- & Electronic Physics, 2019, Vol 11, Issue 2, p1
- ISSN
2077-6772
- Publication type
Article
- DOI
10.21272/jnep.11(2).02012