Fabrication and characterization of cerium-doped titania inverse opal by sol–gel method
Fabrication and characterization of cerium-doped titania inverse opal by sol–gel method
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DOI：
10.1016/j.matchemphys.2007.05.047
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发表时间：
2007-12
影响因子：
4.6
通讯作者：
Y. Jin;Yihua Zhu;Xiaoling Yang;Chuan Wei;Chunzhong Li
中科院分区：
文献类型：
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作者：
Y. Jin;Yihua Zhu;Xiaoling Yang;Chuan Wei;Chunzhong Li
以硝酸铈和钛酸四丁酯为原料，在聚苯乙烯蛋白石的间隙中合成了具有粉末和薄膜形貌的铈掺杂二氧化钛反蛋白石。该过程涉及将前体渗透到聚苯乙烯蛋白石模板的间隙中，然后将前体水解缩聚成无定形二氧化钛，并通过煅烧除去聚苯乙烯蛋白石。利用扫描电镜对蛋白石和反蛋白石的形貌进行了表征。粉末X射线衍射（XRD）允许观察掺杂程度对晶粒尺寸的影响。XPS研究表明了铈的掺杂结构。铈掺杂的二氧化钛反蛋白石的合成提供了一个机会，以电气和光学工程的光子带结构和开发可调谐的三维光子晶体器件的可能性。
Cerium-doped titania inverted opals with powder and film morphologies were synthesized from cerous nitrate and tetrabutyl titanate in the interstitial spaces of a polystyrene opal. This procedure involves infiltration of precursors into the interstices of the polystyrene opal template followed by hydrolytic polycondensation of the precursors to amorphous titania and removal of the polystyrene opal by calcination. The morphologies of opal and inverse opal were characterized by scanning electron microscope (SEM). Powder X-ray diffraction (XRD) allows one to observe the influence of doping degree on the grain size. And the XPS investigation showed the doping structure of cerium. The synthesis of cerium-doped titania inverted opals provides an opportunity to electrically and optically engineer the photonic band structure and the possibility of developing tunable three-dimensional photonic crystal devices.