采用垂直沉积法自组装制备了SiO2胶体晶体模板,并结合Pechini溶胶-凝胶法实现多种SiO2-BaTiO3异质双尺寸超材料结构的制备.通过X射线衍射分析仪(XRD)和场发射扫描电子显微镜(FE-SEM)对所得粉体和光子晶体的晶型、形貌及排列方式进行测试分析.对比钛酸钡粉体,对SiO2-BaTiO3异质超材料的结构进行探讨,研究不同pH值对钛酸钡粉体的形貌和粒径的影响,进而研究不同凝胶对异质超材料结构的影响.研究结果表明异质结构中胶体晶体模板的排列更加紧密有序,缺陷减少,纳米颗粒的粒径与原钛酸钡粉体的粒径基本一致,利用不同凝胶可获得LS2、LS4、LS6型结构及层-层复合结构.
参考文献
| [1] | Costas M. Soukoulis;Martin Wegener .Optical Metamaterials-More Bulky and Less Lossy[J].Science,2010(Dec.17 TN.6011):1633-1634. |
| [2] | Hanumantha Rao Vutukuri;Johan Stiefelhagen;Teun Vissers;Arnout Imhof;Alfons van Blaaderen .Bonding Assembled Colloids without Loss of Colloidal Stability[J].Advanced Materials,2012(3):412-416. |
| [3] | D. Vanmaekelbergh .Self-assembly of colloidal nanocrystals as route to novel classes of nanostructured materials[J].Nano Today,2011(4):419-437. |
| [4] | 万勇,赵修松,蔡仲雨,李洪亮,夏临华.利用水平沉积法制作PS微球二元胶体薄膜及其它复杂结构[J].人工晶体学报,2011(05):1295-1298. |
| [5] | Alessandri, I;Zucca, M;Ferroni, M;Bontempi, E;Depero, LE .Tailoring the Pore Size and Architecture of CeO2/TiO2 Core/Shell Inverse Opals by Atomic Layer Deposition[J].Small,2009(3):336-340. |
| [6] | Yuan Ting Wu;Xiu Feng Wang;Cheng Long Yu .Preparation and Characterization of Barium Titanate (BaTiO_3) Nano-Powders by Pechini Sol-Gel Method[J].Materials and Manufacturing Processes,2012(10/12):1329-1333. |
| [7] | 伍媛婷,王秀峰,李二元,谢利民.双尺寸胶体晶体的制备及其结构表征[J].人工晶体学报,2013(01):42-46. |
| [8] | Xiaoping Li;Wei-Heng Shih .Size effects in barium titanate particles and clusters[J].Journal of the American Ceramic Society,1997(11):2844-2852. |
| [9] | 方俊,王秀峰,王列松,程冰,伍媛婷,朱宛琳.丁二酸改性二氧化硅胶体球的制备及其胶体晶体的组装[J].科学通报,2006(24):2842-2846. |
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