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中文摘要：
本文采用水热法，以TiCl3为前驱物，在180℃反应24h，合成了金红相纳米TiO2棒状晶体，晶体直径为50～100nm，长度为100～200nm。当添加10mol／LNaCl作矿化剂时，晶体长度达到600～800nm。当溶液中添加KF浓度为0．05mol／L时，生成物仍为金红相，晶体直径约为50nm，长度约为100nm。当溶液中添加KF浓度为0．7moL／L时，生成纯锐钛相纳米TiO2，晶体颗粒均匀，呈四方形，边长100nm左右。当KF浓度为1mol／L时，生成物仍为锐钛相，但晶体边长降为50nm左右。实验结果表明氟离子对锐钛相的形成有很强的诱导作用。
英文摘要：
In this paper, pure futile TiO2 nanocrystals were synthesized with TiC13 solutions as the precursor by hydrothermal method at 180℃ for 24h, the diameter was about 50-100nm, and the length was 100-200nm. When added 10mol/L NaC1 as mineralizer, the phase of production was also rutile, the length of crystal was enhanced to 600-800nm. When added 0. 05mol/L KF as mineralizer, the resuhances were still rutile, with 50nm in diameter and 100nm in length. When the concentration of KF was up to 0.7mol/L, the phase of synthesized TiO2 nanocrystal changed into pure anatase, with uniform and square morphology. When the concentration of KF was 1mol/L, the phase of synthesized TiO2 nanocrystal still was anatase, but its length reduced to about 50nm. It＇s indicated that the fluorin-ion has great effect on the phase transition of anatase TiO2 crystal.
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