Synthesis of nanosized TiO2 powder by Sol-Gel method in acidic conditions
الموضوعات : Journal of the Iranian Chemical ResearchParvain Gharbani 1 , Ali Mehrizad, 2 , Samad Motameni Tabatabii 3
1 - Department of Chemistry, Islamic Azad University, Ahar Branch, Ahar, Iran
2 - Department of Chemistry, Islamic Azad University, Ahar Branch, Ahar, Iran
3 - Department of Chemistry, Islamic Azad University, Ahar Branch, Ahar, Iran
الکلمات المفتاحية: Titania, sol-gel, Rutile, Anatase, X-ray diffraction (XRD),
ملخص المقالة :
The preparation of nano-sized TiO2 by titanium tetraisopropoxide (Ti(OiPr)4) via sol-gelmethod using acid as a catalyst is investigated and the optimized conditions concerning theproportional amount of acid, water, alcohol is established by XRD and SEM. The effect ofcalcination temperature on phase transformation of TiO2 (rutile, anatase and brookite) wasdetermined by XRD. The smallest grain size of TiO2 powder we have obtained is 25 nm foranatase at 400 ºC by controlling the acidity and the mole ratio of starting materials.
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