考察了偏钛酸作前驱体水热合成TiO2微粉过程中偏钛酸、正钛酸及水溶液中阴、阳离子,如PO3-4、Ac-、Zn2+、NH+4够等与TiO2物相的关系,并探讨了阴、阳离子对TiO2颗粒形貌的影响.结果表明,TiO2物相与前驱体偏钛酸的微结构有关,HN+4、Zn2+、正钛酸及小的、低价阴离子能促进金红石物相的形成,而大的、高价阴离子则利于锐钛矿物相的形成,且影响TiO2颗粒的生长.
The preparation of TiO2 particles from H3TiO3 by using hydrothermal method was reported. The effects of H3TiO3, H4TiO4 and ions, for example: PO-4, Ac-, Zn2+, NH+4 and so on were studied. The results indicated that the phases and partical morphology of TiO2 were intimate relative to the structure of H3TiO3, PO-4 and other high valence or big anions could accelerate anatase formation of TiO2 and Zn2+, NH+4 or H4TiO4 were the promoter of rutile phase.
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