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首页> 外文会议>International Conference on Key Engineering Materials >The Effect of Molar Ratio of TiO_2/WO_3 Nanocomposites on Visible Light Prepared by Hydrothermal Method
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The Effect of Molar Ratio of TiO_2/WO_3 Nanocomposites on Visible Light Prepared by Hydrothermal Method

机译：TiO_2 / WO_3纳米复合材料对水热法制备可见光摩尔比的影响

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The coupled TiO_2/WO_3 nanocomposites were synthesized by hydrothermal method by using hydrogen titanate and ammonium metatungstate hydrate as the precursors of TiO_2 and WO_3, respectively. The effects of hydrothermal conditions to prepare hydrogen titanate powders were studied. It was found that the hydrothermal condition at 130 °C for 24h shown the best result. The TiO_2/WO_3 nanocomposites were carried out as a function of varied molar ratio of TiO_2/WO_3 for 1:1, 3:1 and 1:3. The coupled TiO_2/WO_3 nanocomposites are characterized by transmission electron microscopy, UV-vis absorption spectra by UV-VIS spectrometer and photocatalytic activity by degradation of MB solution under visible light. The results show that the absorption spectra of the coupled TiO_2/WO_3 nanocomposites can be seen in visible light region which higher than pure TiO_2 (from hydrothermal method) and P25-Degussa.
机译：通过使用钛酸盐和咪唑铵水合物作为TiO_2和WO_3的前体，通过水热法合成偶联的TiO_2 / WO_3纳米复合材料。研究了水热条件制备钛酸酯粉末的影响。发现在130℃下的水热条件为24小时，所示结果最佳。作为TiO_2 / WO_3的变化摩尔比为1：1,3：1和1：3的函数进行TiO_2 / WO_3纳米复合材料。偶联的TiO_2 / WO_3纳米复合材料的特征在于通过UV-Vis光谱仪和光催化活性通过透射电子显微镜，UV-Vis吸收光谱，通过在可见光下降解MB溶液。结果表明，偶联的TiO_2 / WO_3纳米复合材料的吸收光谱可以看出在高于纯TiO_2（来自水热法）和P25-Degussa的可见光区域中。

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