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    Please use this identifier to cite or link to this item: https://ir.fy.edu.tw:8080/ir/handle/987654321/3218


    Title: Applying the experimental statistical method to deal the preparatory conditions of nanometric-sized TiO2 powders from a two emulsions process
    Authors: Hsieh,Ching-Shieh;Zhu, Hong;Wei, Tsong-Yang;Chung,Zen-Ja;Yang,Wein-Duo;Ling,Yin-Hsia
    Contributors: 輔英科技大學 應用化學及材料科學系
    Keywords: Nanometric powders;Emulsions;TiO2;Powder preparation
    Date: 2008-01-01
    Issue Date: 2010-09-28 16:53:35 (UTC+8)
    Abstract: Nanometric-sized titanium oxide powders have been synthesized successfully through the two-emulsion method. It was found that the anatase phase is formed at 400 °C and converted to rutile phase as heat-treated at 700 °C. The synthesized TiO2 powders exhibit particle sizes at 10–30 nm, in a specific surface area of about 30–88 m2/g. Furthermore, the surface response method (including Box-Behnken design) was applied to deal with the preparatory conditions of the two-emulsion process. It reveals that the optimal preparatory conditions were obtained at the volume ratio of surfactant/n-hexane = 0.03, volume ratio of water/oil = 0.04, molar ratio of acetylacetone/titanium isopropoxide = 4, molar ratio of isopropanol/titanium isopropoxide = 23.1. By combining the optimal settings of those variables, a nanometric-sized TiO2 powder has been obtained with specific surface area of 96 m2/g. It demonstrates the photocatalytic degradation of methylene blue solution effectively by exposing the as-synthesized TiO2 powders in aqueous solution under ultraviolet light.
    Relation: Journal of the European Ceramic Society,Volume 28, Issue 6, Pages 1177-1183
    Appears in Collections:[應用化學及材料科學系] 期刊論文

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