Controlled synthesis of brookite and combined brookite with rutile phases of titanium di-oxide and its characterization studies. Issue 2 (1st February 2017)

• Record Type: Journal Article
• Authors: Balaganapathi, T.; Kaniamuthan, B.; Vinoth, S.; Arun, T.; Thilakan, P.
• Is Part Of: Ceramics international. Volume 43:Issue 2(2017)
• Page Start: 2438
• Page End: 2440
• Publication Date: 2017-02-01
• Subjects: Sol-gel process -- Acid catalyst -- Chelating agent -- Brookite -- Phase transition; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2016.11.037
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Experimental conditions for the sol-gel synthesis of TiO2 were modified by using Polyethylene glycol (PEG) as well as an addition of acid catalyst. Synthesis of brookite and mixed brookite with rutile was obtained. X-ray powder diffraction and Micro Raman measurements confirmed the crystallization of brookite while using pure PEG4000 with low molar acid concentration and a mixed brookite with rutile phase for PEG4000 with high molar acid concentration. High Resolution Transmission Electron Microscopic analysis revealed the presence of nanocrystalline assembly with sizes between 8 and 16 nm. Direct phase transition from brookite to rutile phase was observed during the further heat treatment of brookite sample.