The Preparation and Mechanism Studies on Ultrafine Porous Titania

Abstract

Abstract: Ultrafine porous titania pow ders were synthesized by precipitating method with titania sulf ate and ammonia as raw materials and ethanol as dispersing agent.The influences of pHand reaction temperatures on the t ex ture of titania precursor powders were investigated.The causes of surface area reduction with calcining temperat ures are grain growth and phase t ransform ation. Micropores could be sintered as enhancing calcining temperature.from TEM photos space network of porous titania is clearly seen.

Key words: Ultrafine, Porous, TiO₂, Preparation, Mechanism

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ZHAO Jing-Zhe, WANG Zi-Chen, WANG LI-Wei, XUE LI-Jing, LIU Yan-Hua, YANG Hua, ZHAO Mu-Yu . The Preparation and Mechanism Studies on Ultrafine Porous Titania[J]. Chem. J. Chinese Universities, 1999, 20(1): 115.

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The Preparation and Mechanism Studies on Ultrafine Porous Titania

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