以正硅酸乙酯(TEOS)为硅源,P123为模板剂,氯化氧锆(ZrOCl2·8H2O)和硝酸亚铈(Ce(NO3)3·6H2O)为锆、铈前驱体,在不外加无机酸的条件下,利用无机前驱盐自身水解产生的弱酸性环境,水热法一步合成Zr-Ce-SBA-15介孔材料.通过改变起始物料配比和调节合成温度可以实现对产物的形貌进行有效控制.利用小角X射线衍射(LXRD)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)、电感耦合等离子体原子发射光谱(ICP-AES)和氮气吸附等手段对所合成的样品进行了表征.结果表明:在nzr(Ce):nSi物质量的比分别为0.03,0.05,0.10时,合成的材料具有类似于SBA-15高度有序的二维六方相介孔结构,锆、铈物种被成功引入SBA-15材料的骨架中.当nZr(Ce):nSi摩尔比为0.05,晶化温度为100℃时,Zr-Ce-SBA-15表现为六方板状形貌.随着晶化温度的升高,Zr-Ce-SBA-15的彤貌由六方板状转变成圆盘状.
参考文献
| [1] | Kresge C T;Leonowicz M E;Roth W J et al.[J].Nature,1992,359:710. |
| [2] | Victor S L;Lai C Y et al.[J].Journal of the American Chemical Society,2001,123:11510. |
| [3] | Yoshitake H.;Yokoi T.;Tatsumi T. .Adsorption behavior of arsenate at transition metal cations captured by amino-functionalized mesoporous silicas[J].Chemistry of Materials,2003(8):1713-1721. |
| [4] | 赵会玲,胡军,汪建军,周丽绘,刘洪来.介孔材料氨基表面修饰及其对CO2的吸附性能[J].物理化学学报,2007(06):801-806. |
| [5] | Zhao DY.;Feng JL.;Chmelka BF.;Stucky GD.;Huo QS. .Nonionic triblock and star diblock copolymer and oligomeric surfactant syntheses of highly ordered, hydrothermally stable, mesoporous silica structures[J].Journal of the American Chemical Society,1998(24):6024-6036. |
| [6] | Dongyuan Zhao;Jinyu Sun;Quanzhi Li;Galen D.Stucky .Morphological Control of Highly Ordered mesoporous Silica SBA-15[J].Chemistry of Materials,2000(2):275-279. |
| [7] | 徐武军,高强,徐耀,吴东,孙予罕.基于HPMCP包覆介孔SBA-15的pH敏感药物缓释系统[J].化学学报,2008(14):1658-1662. |
| [8] | 孙锦玉,赵东元."面包圈"状高有序度大孔径介孔分子筛SBA-15的合成[J].高等学校化学学报,2000(01):21-23. |
| [9] | Zhang Y H;Gao F;Wan H Q et al.[J].Microporous and Mesoporous Materials,2008,113(1-3):393. |
| [10] | Li Y;Zhang W H;Zhang L et al.[J].Journal of Physical Chemistry B,2004,108(05):9739. |
| [11] | Shah, P;Ramaswamy, AV;Lazar, K;Ramaswamy, V .Direct hydrothermal synthesis of mesoporous Sn-SBA-15 materials under weak acidic conditions[J].Microporous and Mesoporous Materials,2007(1/3):210-226. |
| [12] | Newalkar B L;Olanrewaju J;Komarneni S .[J].Journal of Physical Chemistry B,2001,105(35):8356. |
| [13] | Garg S;Soni K;Kumaran M et al.[J].Catalysis Today,2008,130(2-4):302. |
| [14] | Chen, SY;Jang, LY;Cheng, SF .Synthesis of Zr-incorporated SBA-15 mesoporous materials in a self-generated acidic environment[J].Chemistry of Materials,2004(21):4174-4180. |
| [15] | Dai, QG;Wang, XY;Chen, GP;Zheng, Y;Lu, GZ .Direct synthesis of Cerium(III)-incorporated SBA-15 mesoporous molecular sieves by two-step synthesis method[J].Microporous and Mesoporous Materials,2007(1/3):268-275. |
| [16] | Srinivasu P;Anand C;Alam S et al.[J].Journal of Physical Chemistry C,2008,112(27):10130. |
| [17] | 袁金芳,李健生,顾娟,夏敏亚,孙秀云,韩卫清,王连军.一种合成六方板状Zr-Ce-SBA-15介孔材料的新方法[J].化学学报,2009(11):1271-1275. |
| [18] | 闫继娜,施剑林,华子乐,陈航榕,阮美玲,李蕾.COO-NiO/SBA-15的合成与表征[J].化学学报,2004(18):1841-1844. |
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