Biomimetic Synthesis and Characterization of Mesoporous Titanium Dioxide
Biomimetic Synthesis and Characterization of Mesoporous Titanium Dioxide
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DOI：
10.1002/ceat.200700104
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发表时间：
2007-08
影响因子：
2.1
通讯作者：
Hongshi Zhao;Wen He;Yingjun Feng;Xingtao Jia;Xudong Zhang;Zhengmao Li;Shunpu Yan;Weijia Zhou
中科院分区：
文献类型：
--
作者：
Hongshi Zhao;Wen He;Yingjun Feng;Xingtao Jia;Xudong Zhang;Zhengmao Li;Shunpu Yan;Weijia Zhou
以生物表面活性剂磷脂酰胆碱为模板剂，采用溶胶-凝胶法合成了孔径为5-7 nm的介孔二氧化钛（TiO 2）。使用四丁氧钛（TBOT）作为前体。在700 °C下热处理后，在颗粒中形成的非常精细的中孔结构得以保持。低角X射线粉末衍射（XRD）和孔径分布曲线表明介孔结构的存在。利用透射电子显微镜（TEM）和N2吸附-脱附等温线进行进一步表征。多孔材料的紫外-可见光谱发生了明显的红移，这可以用能带理论解释。结果证实了介孔TiO 2的合成。
Mesoporous titanium dioxide (TiO2) with a pore size range from 5–7 nm was synthesized by a sol-gel method using biosurfactant phosphatidylcholines as an organic template. Titanium tetrabutoxide (TBOT) was used as the precursor. A very fine mesoporous structure formed in the particle was maintained after a heat treatment at 700 °C. Low-angle X-ray powder diffraction (XRD) and a pore size distribution curve revealed the existence of the mesoporous structure. Transmission Electron Microscopy (TEM) and N2 adsorption–desorption isotherms were utilized for further characterization. A significant red shift in the UV-VIS spectrum of the porous material was observed, which could be explained by the energy band theory. The results confirmed the synthesis of mesoporous TiO2.