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DOI	10.1088/1361-6528/aa9ba4
	Preparation and characterization of self-assembly hydrogels with exfoliated montmorillonite nanosheets and chitosan
	Wang, Wei; Zhao, Yunliang; Yi, Hao; Chen, Tianxing; Kang, Shichang; Li, Hongqiang; Song, Shaoxian
发表日期	2018
ISSN	0957-4484
EISSN	1361-6528
卷号	29 期号:2
英文摘要	Novel montmorillonite-nanosheet/chitosan (MMTNS/CS) hydrogels fabricated via the self-assembly of exfoliated MMTNS and CS chains were investigated. The exfoliation of MMTNS, self-assembly mechanism and structure of MMTNS/CS hydrogels were characterized by an atomic force microscope, scanning electron microscope, transmission electron microscope, Fourier transform infrared spectroscope, energy-dispersive x-ray spectroscope and Brunauer-Emmett-Teller analyzer, respectively. The results indicated that MMT could be easily exfoliated to nanosheets with a thickness of 1 similar to 5 nm in aqueous solution by an ultrasonic base upon interlayer hydration. The formation mechanism of the self-assembly hydrogels was due to the hydrogen bond (-OH center dot center dot center dot +NH3-) and electrostatic interaction between the MMTNS and CS. The MMTNSs were connected consecutively by CS in-plane to form a huge slice. The porous structure of the hydrogels was controllable by adjusting the MMTNS/CS mass ratio. The hydrogels could be used as adsorbents for sewage treatments, carriers for drugs, microorganisms and catalyzers due to their controllable porous structure and tremendous specific surface area which were derived from the completely exfoliated MMTNS.
关键词	montmorillonite exfoliation ultrasonic self-assembly hydrogels porous structure
学科领域	Science & Technology - Other Topics; Materials Science; Physics
语种	英语
WOS研究方向	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
来源期刊	NANOTECHNOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111966
作者单位	Wuhan Univ Technol, Sch Resources & Environm Engn, Luoshi Rd 122, Wuhan 430070, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Wang, Wei,Zhao, Yunliang,Yi, Hao,et al. Preparation and characterization of self-assembly hydrogels with exfoliated montmorillonite nanosheets and chitosan[J]. 中国科学院西北生态环境资源研究院,2018,29(2).
APA	Wang, Wei.,Zhao, Yunliang.,Yi, Hao.,Chen, Tianxing.,Kang, Shichang.,...&Song, Shaoxian.(2018).Preparation and characterization of self-assembly hydrogels with exfoliated montmorillonite nanosheets and chitosan.NANOTECHNOLOGY,29(2).
MLA	Wang, Wei,et al."Preparation and characterization of self-assembly hydrogels with exfoliated montmorillonite nanosheets and chitosan".NANOTECHNOLOGY 29.2(2018).