Facile synthesis of mesoporous silica nanoparticles with controlled morphologies using water-acetone media
发表时间：2019-03-09
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- 论文类型：
- 期刊论文
- 第一作者：
- Zhang, Jinchang
- 通讯作者：
- Guo, XW (reprint author), Dalian Univ Technol, State Key Lab Fine Chem, Sch Chem Engn, 158 Zhongshan Rd, Dalian 116012, Peoples R China.
- 合写作者：
- Liu, Min,Zhang, Anfeng,Lin, Kaifeng,Song, Chunshan,Guo, Xinwen
- 发表时间：
- 2010-02-01
- 发表刊物：
- SOLID STATE SCIENCES
- 收录刊物：
- SCIE
- 文献类型：
- J
- 卷号：
- 12
- 期号：
- 2
- 页面范围：
- 267-273
- ISSN号：
- 1293-2558
- 关键字：
- Mesoporous silica nanoparticles; Water-acetone; Controlled morphologies; Nanococoon; Nanorcid; Nanosphere
- 摘要：
- Mesoporous silica nanciparticles with controlled morphologies including nanococoons, nanorods and nanospheres have been synthesized in water-acetone media at room temperature using cetyltrimethylammonium bromide (CTAB) as the template. The obtained nanciparticles generally show hexagonal-like mesoporous structures with average pore size ranging from 2.7 to 3.3 nm and surface area from 806 to 1055 m(2)/g, respectively. It was found that the changes in water-to-acetone molar ratios have a dramatic impact on the morphologies of the mesoporous silica with different surface toughness, probably due to the solvent influence on the rate of the hydrolysis of tetraethoxy silane (TEOS) and the polymerization of inorganic species. Interestingly, the morphology of the mesoporous silica products can be controlled in shape from nanococoons to nanorods to nanospheres just by decreasing the water-to-acetone molar ratio from 75 to 30 to 15, respectively. From transmission electron microscopy (TEM) images, it was observed that mesoporous parallel channels run along the short axis in some areas in the nanorods, whereas the radially arranged mesopore channels are present in the nanospheres. Additionally, hydrothermal treatment leads to rougher Surfaces while retaining the morphologies and nanostructures of these mesoporous silicas. (C) 2009 Elsevier Masson SAS. All rights reserved.
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