偏钛酸作前驱体水热合成TiO_2微粉

TiO_2 Particles Derived from H_3TiO_3 with Hydrothermal Method

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PO34-、Ac-、Zn2+、NH+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、Zn+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 H3TiOs, H4TiO4 and ions, for example: PO34-, Ac-, Zn2+, NH+2 and so on were studied. The results indicated that the phases and partical morphology of TiO2 were intimate relative to the structure of H3TiO3, PO34- 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.