以工业TiOSO4液为原料,在复合模板剂十二胺和十六烷基三甲基溴化铵(CTAB)的超分子自组装诱导作用下,合成出有序介孔TiO2.通过控制溶液pH值有效调控TiOSO4液的水解缩聚速率,使得水合二氧化钛均匀沉积于复合模板剂形成的胶束上,在脱除模板剂后得到介孔材料.产物采用XRD、粒度分布测试、SEM、TEM、电子衍射及等温N2吸附进行分析表征.研究表明:介孔TiO2具有精细纳米结构,孔道分布窄,平均孔径2.2nm,BET比表面积为135.9m2/g,孔隙率31%,孔容0.17cm3/g;介孔TiO2的孔壁部分晶化为锐钛型,晶粒尺寸为37nm,粒子介于30～80nm间,聚集的粉末颗粒为类球形.
参考文献
| [1] | Kresge C T;Leonowicz M E;Roth W J et al.[J].Nature,1992,359:710-712. |
| [2] | Beck J S;Vartuli J C;Roth W J et al.[J].Journal of the American Chemical Society,1992,114:10834-10843. |
| [3] | Davis M E .[J].Nature,2002,417:813-821. |
| [4] | Antonelli D M;Ying J Y .[J].Angewandte Chemie International Edition,1995,34(18):2014-2017. |
| [5] | Frindell, KL;Tang, J;Harreld, JH;Stucky, GD .Enhanced mesostructural order and changes to optical and electrochemical properties induced by the addition of cerium(III) to mesoporous titania thin films[J].Chemistry of Materials,2004(18):3524-3532. |
| [6] | Sreethawong T;Suzuki Y;Yoshikawa S .[J].Journal of Solid State Chemistry,2005,178:329-338. |
| [7] | Kirsch B L;Richman E K;Riley A E et al.[J].Journal of Physical Chemistry B,2004,108:12698-12706. |
| [8] | Yun H S;Miyazawa K;Honma I et al.[J].Materials Science and Engineering C,2003,23:487-494. |
| [9] | Cassiers C;Linssen T;Mathieu M et al.[J].Journal of Physical Chemistry B,2004,108:3713-3721. |
| [10] | Tan Ruiqin;He Yu;Zhu Yongfa et al.[J].Journal of Materials Science,2003,38:3973-3978. |
| [11] | 徐如人;庞文琴.分子筛与多孔材料化学[M].北京:科学出版社,2004 |
| [12] | Devi GS.;Hyodo T.;Shimizu Y.;Egashira M. .Synthesis of mesoporous TiO2-based powders and their gas-sensing properties[J].Sensors and Actuators, B. Chemical,2002(1):122-129. |
| [13] | 张立德.纳米材料[M].北京:化学工业出版社,2000 |
| [14] | Yun H S;Miyazawa K;Zhou H et al.[J].Advanced Materials,2001,13(18):1377-1380. |
| [15] | 黄惠忠.纳米材料分析[M].北京:化学工业出版社,2003 |
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