ICCAS OpenIR
Preparation and characterization of montmorillonite-silica nanocomposites: A sol-gel approach to modifying clay surfaces
Qian, Zhongzhong; Hu, Guangjun; Zhang, Shimin; Yang, Mingshu
2008-09-01
Source PublicationPHYSICA B-CONDENSED MATTER
ISSN0921-4526
Volume403Issue:18Pages:3231-3238
AbstractMontmorillonite-silica nanocomposites were prepared by a sol-gel approach involving hydrolysis reaction of alkoxysilanes (TEOS) and subsequent condensation reaction with hydroxyl groups of the clay, resulting in the formation of the mesoporous silica network and silica nanoparticles covered or attached on the clay surfaces. According to X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and nitrogen adsorption isotherms, the structure and surface properties of the sol-gel-modified clay can be controlled by varying the TEOS/clay mass ratio and/or adding trace amounts of acid as catalyst. In the case of acid-catalyzed procedures, large continuous mesoporous silica was covered on the clay surfaces, resulting in delamination of clay platelets in silica matrix at higher TEOS/clay ratio, and attaching of isolated mesoporous silica on the clay surface at lower TEOS/clay ratio, respectively. in the case of non-catalyzed procedures, silica nanoparticles were attached on the two-dimensional (2D) clay platelets, while the stack order of the clay was maintained regardless of the TEOS/clay ratios. This sol-gel modification approach combines the surface properties of mesoporous silica and nanoparticles with layered clay, while inheriting the structural properties of the pristine clay such as further intercalation with organic compounds and polymers. (C) 2008 Elsevier B.V. All rights reserved.
KeywordClay Silica Mesoporous Sol-gel Surface Modification Nanocomposites
DOI10.1016/j.physb.2008.04.008
Indexed BySCI
Language英语
WOS IDWOS:000259626500049
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/65220
Collection中国科学院化学研究所
Corresponding AuthorYang, Mingshu
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing Natl Lab Mol Sci,CAS Key Lab Engn Plast, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Qian, Zhongzhong,Hu, Guangjun,Zhang, Shimin,et al. Preparation and characterization of montmorillonite-silica nanocomposites: A sol-gel approach to modifying clay surfaces[J]. PHYSICA B-CONDENSED MATTER,2008,403(18):3231-3238.
APA Qian, Zhongzhong,Hu, Guangjun,Zhang, Shimin,&Yang, Mingshu.(2008).Preparation and characterization of montmorillonite-silica nanocomposites: A sol-gel approach to modifying clay surfaces.PHYSICA B-CONDENSED MATTER,403(18),3231-3238.
MLA Qian, Zhongzhong,et al."Preparation and characterization of montmorillonite-silica nanocomposites: A sol-gel approach to modifying clay surfaces".PHYSICA B-CONDENSED MATTER 403.18(2008):3231-3238.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Qian, Zhongzhong]'s Articles
[Hu, Guangjun]'s Articles
[Zhang, Shimin]'s Articles
Baidu academic
Similar articles in Baidu academic
[Qian, Zhongzhong]'s Articles
[Hu, Guangjun]'s Articles
[Zhang, Shimin]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Qian, Zhongzhong]'s Articles
[Hu, Guangjun]'s Articles
[Zhang, Shimin]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.