Facile synthesis of monodisperse microspheres and gigantic hollow shells of mesoporous silica in mixed water-ethanol solvents
文献类型：期刊论文
| 作者 | Zhang, Huijuan; Wu, Jun; Zhou, Longping; Zhang, Dayong; Qi, Limin |
| 刊名 | LANGMUIR
 |
| 出版日期 | 2007-01-30 |
| 卷号 | 23期号:3页码:1107-1113 |
| ISSN号 | 0743-7463 |
| DOI | 10.1021/la062542l |
| 英文摘要 | Mesoporous silica materials with a variety of morphologies, such as monodisperse microspheres, gigantic hollow structures comprising a thin shell with a hole, and gigantic hollow structures consisting of an outer thin shell and an inner layer composed of many small spheres, have been readily synthesized in mixed water-ethanol solvents at room temperature using cetyltrimethylammonium bromide (CTAB) as the template. The obtained mesoporous silica generally shows a disordered mesostructure with typical average pore sizes ranging from 3.1 to 3.8 nm. The effects of the water-to-ethanol volume ratio (r), the volume content of tetraethyl orthosilicate TEOS (x), and the CTAB concentration in the solution on the final morphology of the mesoporous silica products have been investigated. The growth process of gigantic hollow shells of mesoporous silica through templating emulsion droplets of TEOS in mixed water-ethanol solution has been monitored directly with optical microscopy. Generally, the morphology of mesoporous silica can be regulated from microspheres through gigantic hollow structures composed of small spheres to gigantic hollow structures with a thin shell by increasing the water-to-ethanol volume ratio, increasing the TEOS volume content, or decreasing the CTAB concentration. A plausible mechanism for the morphological regulation of mesoporous silica by adjusting various experimental parameters has been put forward by considering the existing state of the unhydrolyzed and partially hydrolyzed TEOS in the synthesis system. |
| 语种 | 英语 |
| WOS记录号 | WOS:000243684100026 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/61937]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Qi, Limin |
| 作者单位 | Peking Univ, Coll Chem, State Key Lab Struct Chem Unstable & Stable Speci, BNLMS, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Huijuan,Wu, Jun,Zhou, Longping,et al. Facile synthesis of monodisperse microspheres and gigantic hollow shells of mesoporous silica in mixed water-ethanol solvents[J]. LANGMUIR,2007,23(3):1107-1113. |
| APA | Zhang, Huijuan,Wu, Jun,Zhou, Longping,Zhang, Dayong,&Qi, Limin.(2007).Facile synthesis of monodisperse microspheres and gigantic hollow shells of mesoporous silica in mixed water-ethanol solvents.LANGMUIR,23(3),1107-1113. |
| MLA | Zhang, Huijuan,et al."Facile synthesis of monodisperse microspheres and gigantic hollow shells of mesoporous silica in mixed water-ethanol solvents".LANGMUIR 23.3(2007):1107-1113. |
入库方式： OAI收割
来源：化学研究所
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