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Preparation and photocatalytic activity of TiO2/Fe2O3 nanocomposite

机译：TiO2 / Fe2O3纳米复合材料的制备及光催化活性

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TiO2/Fe2O3 nanocomposite was fabricated by a hydrolysis-precipitation approach, with TiCl4 as precursor and Fe2O3 as support. The crystal phase, diameter and morphology of the sample particle were characterized by X-ray diffraction, transmission electron microscope. The results show that the samples are composed of haematite and rutile. The morphology and diameter of rutile particle, coating effect and weight percentages of haematite and rutile are related to the preparing temperature and molar ratio of Fe/Ti. The photocatalytic activity of the prepared photocatalyst was estimated in an aqueous solution at ambient temperature of 303K. The results imply that the photocatalytic activity of the sample is higher than that of phase pure rutile, related to Fe/Ti molar ratio and its preparing temperature. These results can be attribute to the microsturcture of the sample. A synergistic effect exists between titania and haematite in the nanocomposite.
机译：以TiCl4为前驱体，Fe2O3为载体，采用水解沉淀法制备了TiO2 / Fe2O3纳米复合材料。用X射线衍射，透射电子显微镜对样品颗粒的晶相，直径和形貌进行了表征。结果表明，样品由赤铁矿和金红石组成。金红石颗粒的形貌和直径，包覆效果以及赤铁矿和金红石的重量百分比与Fe / Ti的制备温度和摩尔比有关。在水溶液中在303K的环境温度下估计制得的光催化剂的光催化活性。结果表明，样品的光催化活性高于相纯金红石型，与Fe / Ti摩尔比及其制备温度有关。这些结果可以归因于样品的微观结构。纳米复合材料中的二氧化钛和赤铁矿之间存在协同作用。

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