以聚苯乙烯微球(polystyrene microsphere)自然沉积形成的胶体晶体作模板,将以正硅酸甲酯制备的SiO2溶胶填充到模板间隙中,原位形成凝胶,最后通过焙烧除去模板,得到三维有序大孔SiO2.通过SEM检测,观察到六方和四方2种有序的大孔排列方式.大孔孔径及孔径收缩率分别为240nm和19%.2种排列中,大孔之间由小窗口连通,构成三维有序大孔结构.XRD显示,制备的3DOM材料由无定形SiO2组成.
参考文献
| [1] | Stein A;Schroden R C .Colloidal crystal templating of three-dimensionally ordered macroporous solids-materials for photonics and beyond[J].Current Opinion in Solid State and Materials Science,2001,5:553-564. |
| [2] | Schroden RC.;Al-Daous M.;Sokolov S.;Melde BJ.;Lytle JC.;Stein A. Carbajo MC.;Fernandez JT.;Rodriguez EE. .Hybrid macroporous materials for heavy metal ion adsorption[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2002(11):3261-3267. |
| [3] | Sakamoto J S;Dunn B .Hierarchical electrodes based on inverted opal structures[J].Journal of Materials Chemistry,2002,12:2859-2861. |
| [4] | Litovsky E.;Shavit A.;Shapiro M. .GAS PRESSURE AND TEMPERATURE DEPENDENCES OF THERMAL CONDUCTIVITY OF POROUS CERAMIC MATERIALS .2. REFRACTORIES AND CERAMICS WITH POROSITY EXCEEDING 30-PERCENT[J].Journal of the American Ceramic Society,1996(5):1366-1376. |
| [5] | Velev O D;Jede T A;Lobo R F et al.Porous silica via colloid crystallization[J].Nature,1997,389:447-448. |
| [6] | 沈勇,邬泉周,李玉光.三维规则排列的大孔SiO2材料的制备及表征[J].催化学报,2002(02):179-181. |
| [7] | 李雄伟,严昌虹,周成德,孙宗华.功能高分子微球研究无乳化剂乳液聚合法合成苯乙烯-苯乙烯磺酸钠胶乳微球[J].功能高分子学报,1989(04):267-274. |
| [8] | Dushkin C D;Lazarov G S;Kotsev S N et al.Effect of growth conditions on the structure of two-dimensional latex crystals:experiment[J].Colloid and Polymer Science,1999,277:914-930. |
| [9] | 钱军民,李旭祥.以四甲氧基硅为前驱体的溶胶-凝胶材料研究[J].西安交通大学学报,2002(01):103-107. |
| [10] | Zakhidov A A;Baughman R H;Iqbal Z et al.Carbon structures with three-dimensional periodicity at optical wavelengths[J].Science,1998,282:897-901. |
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