| PMMA胶体晶体模板法制备三维有序大孔TiO_2/SiO_2 |
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| 引用本文： | 刘国栋,王彤文,怒青梅,王艳鳞,顾怀章,刘玲.PMMA胶体晶体模板法制备三维有序大孔TiO_2/SiO_2[J].云南师范大学学报(自然科学版),2011(5). |
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| 作者姓名： | 刘国栋 王彤文 怒青梅 王艳鳞 顾怀章 刘玲 |
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| 作者单位： | 云南师范大学化学化工学院; |
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| 基金项目： | 国家自然科学基金资助项目(21063017); 云南省大学生创新性实验计划(CX03); 云南省自然科学基金重点项目(2003E0005Z) |
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| 摘 要： | 以密堆积的聚甲基丙烯酸甲酯微球为模板,用一种预制备的水分散性TiO2纳米晶、正硅酸乙酯、水和乙醇制成混合溶胶,通过一种浸渍-抽滤方法,将混合溶胶充填于模板微球之间的间隙,原位形成凝胶,最终通过焙烧除去模板微球得到三维有序大孔TiO2/SiO2复合氧化物。样品的SEM结果表明,所形成的球形孔大小均匀,孔径在195$5nm,并以六方和四方的有序排列在三维方向上延伸。样品的TEM和XRD表明大孔的孔壁中含有6～7nm的锐钛矿型TiO2纳米晶。
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| 关 键 词： | PMMA胶体晶体模板 大孔TiO2/SiO2 TiO2纳米晶 浸渍-充填 |
Fabrication of Three-Dimensional Ordered Macroporous TiO_2/SiO_2 Composite by PMMA Colloidal Crystal Template |
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| LIU Guo-dong,WANG Tong-wen,NU Qing-mei,WANG Yan-lin,GU Huai-zhang,LIU Ling.Fabrication of Three-Dimensional Ordered Macroporous TiO_2/SiO_2 Composite by PMMA Colloidal Crystal Template[J].Journal of Yunnan Normal University (Natural Sciences Edition),2011(5). |
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| Authors: | LIU Guo-dong WANG Tong-wen NU Qing-mei WANG Yan-lin GU Huai-zhang LIU Ling |
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| Institution: | LIU Guo-dong,WANG Tong-wen,NU Qing-mei,WANG Yan-lin,GU Huai-zhang,LIU Ling(College of Chemistry and Chemical Engineering,Yunnan Normal University,Kunming 650092,China) |
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| Abstract: | A closed-packing colloidal crystals,composed of poly(methyl methacrylate) microspheres,were used as template to prepared three-dimensionally ordered macroporous(3DOM) TiO2/SiO2 composite by a soak-filtere-exhaust method.The synthesis process included a filling of a mixed sol of a water-soluble TiO2 nanocrystals,TEOS,ethanol,and water in the location of the interstitial space between colloidal PMMA spheres and then transformation of gel in situ as well as calcination treatment.The results of SEM show that th... |
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| Keywords: | PMMA colloidal crystal template Macroporous TiO2/SiO2 TiO2 nanocrystals soak-filling |
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