Characterization and photocatalytic properties of titanium-containing mesoporous SBA-15
Characterization and photocatalytic properties of titanium-containing mesoporous SBA-15
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DOI：
10.1021/ie0514253
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发表时间：
2006-04
影响因子：
4.2
通讯作者：
Guoliang Li;Xiuyun Zhao
中科院分区：
文献类型：
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作者：
Guoliang Li;Xiuyun Zhao
采用N2吸附、电感耦合等离子体原子发射光谱、X射线衍射、紫外-维斯漫反射光谱、X射线光电子能谱、29 Si魔角自旋核磁共振、透射电子显微镜和能量色散X射线分析等手段对不同钛含量的含钛介孔SBA-15（Ti−SBA-15）进行了表征。该材料还研究了在液相中的光催化性能的光分解橙子II。据观察，有限含量的钛可以并入到SBA-15的硅酸盐骨架中而不引起结构变化。在高钛负载量下，在固体颗粒的外表面上观察到锐钛矿相。此外，TiO 2的粒径随钛含量的增加而增大。TiO 2纳米粒子和Ti−SBA-15骨架中的钛离子都具有光活性，并且具有较强的光催化活性。
Titanium-containing mesoporous SBA-15 (Ti−SBA-15) with various titanium contents were synthesized and characterized by means of N2 adsorption, inductively coupled plasma-atomic emission spectroscopy, X-ray diffraction, UV−Vis diffusion reflectance spectroscopy, X-ray photoelectron spectroscopy, 29Si magic-angle spinning nuclear magnetic resonance, and transmission electron microscopy in combination with energy-dispersive X-ray analysis techniques. The materials were also examined in terms of photocatalytic properties of the photodecomposition of Orange II in liquid phase. It was observed that a limited content of titanium can be incorporated into the silicate framework of SBA-15 without provoking structure changes. Anatase phase was observed on the external surface of the solid particles at high titanium loadings. In addition, the particle size of TiO2 increased with increasing the titanium loading. Both TiO2 nanoparticles and the titanium ions in the framework of Ti−SBA-15 possess photoactivity and the h...