Facile large-scale synthesis of brain-like mesoporous silica nanocomposites via a selective etching process | |
Chen Y(陈钰)1,2; Wang QH(王齐华)1; Wang TM(王廷梅)1; Wang QH(王齐华) | |
刊名 | Nanoscale |
2015 | |
卷号 | 7期号:39页码:16442-16450 |
ISSN号 | 2040-3364 |
通讯作者 | 王齐华 |
英文摘要 | The core–shell structured mesoporous silica nanomaterials (MSNs) are experiencing rapid development in many applications such as heterogeneous catalysis, bio-imaging and drug delivery wherein a large pore volume is desirable. We develop a one-pot method for large-scale synthesis of brain-like mesoporous silica nanocomposites based on the reasonable change of the intrinsic nature of the –Si–O–Si– framework of silica nanoparticles together with a selective etching strategy. The as-synthesized products show good monodispersion and a large pore volume of 1.0 cm3 g−1. The novelty of this approach lies in the use of an inorganic–organic hybrid layer to assist the creation of large-pore morphology on the outermost shell thereby promoting efficient mass transfer or storage. Importantly, the method is reliable and grams of products can be easily prepared. The morphology on the outermost silica shell can be controlled by simply adjusting the VTES-to-TEOS molar ratio (VTES: triethoxyvinylsilane, TEOS: tetraethyl orthosilicate) as well as the etching time. The as-synthesized products exhibit fluorescence performance by incorporating rhodamine B isothiocyanate (RITC) covalently into the inner silica walls, which provide potential application in bioimaging. We also demonstrate the applications of as-synthesized large-pore structured nanocomposites in drug delivery systems and stimuli-responsive nanoreactors for heterogeneous catalysis. |
学科主题 | 材料科学与物理化学 |
收录类别 | SCI |
资助信息 | the National Basic Research Program of China (973 Program, grant no. 2015CB057502) |
语种 | 英语 |
WOS记录号 | WOS:000362350700037 |
公开日期 | 2015-12-24 |
内容类型 | 期刊论文 |
源URL | [http://210.77.64.217/handle/362003/18647] |
专题 | 兰州化学物理研究所_先进润滑与防护材料研究发展中心 兰州化学物理研究所_固体润滑国家重点实验室 |
通讯作者 | Wang QH(王齐华) |
作者单位 | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
推荐引用方式 GB/T 7714 | Chen Y,Wang QH,Wang TM,et al. Facile large-scale synthesis of brain-like mesoporous silica nanocomposites via a selective etching process[J]. Nanoscale,2015,7(39):16442-16450. |
APA | Chen Y,Wang QH,Wang TM,&王齐华.(2015).Facile large-scale synthesis of brain-like mesoporous silica nanocomposites via a selective etching process.Nanoscale,7(39),16442-16450. |
MLA | Chen Y,et al."Facile large-scale synthesis of brain-like mesoporous silica nanocomposites via a selective etching process".Nanoscale 7.39(2015):16442-16450. |
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