Abstract
Titanium dioxide (TiO2) nanoparticles have been prepared using sol–gel synthesis route and characterized by X-ray diffraction, transmission electron microscopy, infra-red spectroscopy, UV–visible spectroscopy, photoluminescence spectroscopy and Raman spectroscopy. Crystallite size and lattice strain on peak broadening of TiO2 nanoparticles have been studied using Williamson–Hall analysis. Absorption and photoluminescence spectra of anatase TiO2 samples have been shifted to the blue region, which has been attributed to quantum size effect. Raman bands for TiO2 nanoparticle samples slightly shift to higher wavenumber side compared to literature values for bulk sample, which could be due to the increasing force constants caused by reduction in particle size. Present study reveals that nonstoichiometry, defects and size variation of particles have a great influence on optical band gap, blue shift and Raman band modification, which in turn enhance optical absorption performance and photo-activity of TiO2 nanoparticles.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
