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Nanometer composite-crystal TiO2 powder synthesized by two-stepmethod

Author(s): Wang Liyong, Han Yuanyuan, Ding shiwen, Li Lanfen, Lv Shufang

TiCl4, ammonia, inorganic salts as rawmaterial, nanometer composite-crystal TiO2 powders were synthesized by two-step chemical method. Precursors were crystallized with different crystal phase and stable compositecrystal phase TiO2 with anatase and rutile phase was prepared at low temperature. Quantitative control of crystal phase was realized. Remarkable factors including reaction pH value, reaction time, which affected the phase content, micro-structure, morphology were studied.

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