A mix-phase (anatase-rutile) nanocrystalline titania particles were successfully synthesized in a non-aqueous solvent medium using a novel approach of controlled hydrolysis of titanium isopropoxide. The hydrolysis was carried out by the controlled release of water molecules from simple Schiff base formation reaction of anisaldehyde employing aniline as an amine component in isopropanol solvent medium. The excess aniline used, and the imine formed acts as directing agents. The photocatalytic activities of the catalysts prepared were compared with Degussa P25 for methylene blue degradation in direct sunlight. The photocatalytic activity was found to increase with decreasing availability of water molecules formed during the Schiff base formation (imination) reaction. Also, it was found to affect the phase and shape selection. TEM images show sphere-like to hexagonal to a rod-shaped formation of particulates.

中文翻译：

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非水法合成TiO2混合相的光催化活性

使用一种可控的异丙醇钛水解方法，在非水溶剂介质中成功合成了混合相（锐钛矿型金红石型）纳米二氧化钛颗粒。水解是通过在异丙醇溶剂介质中，以苯胺为胺成分，通过简单的茴香醛席夫碱形成反应中的水分子受控释放而进行的。所用的过量苯胺和形成的亚胺起导向剂的作用。将制备的催化剂的光催化活性与Degussa P25在直接阳光下对亚甲基蓝降解进行了比较。发现随着席夫碱形成（胺化）反应过程中形成的水​​分子的可用性降低，光催化活性增加。此外，还发现它会影响相位和形状选择。