Fabrication of mesoporous silica-coated CNTs and application in size-selective protein separation

	Fabrication of mesoporous silica-coated CNTs and application in size-selective protein separation
	Zhang, Min 1; Wu, Yipan 2; Feng, Xizeng 2; He, Xiwen 1; Chen, Langxing 1; Zhang, Yukui 1,3
刊名	journal of materials chemistry
	2010
卷号	20 期号:28 页码:5835-5842
通讯作者	陈朗星 ; 张玉奎
产权排序	3;6
英文摘要	in this study, we report a simple method to coat mesoporous silica onto carbon nanotubes (cnts) via a two-step procedure. mesoporous cnts@sio(2) composites have been obtained by extracting cetyltrimethylammonium bromide (ctab) via an ion-exchange procedure after silica-coated carbon nanotubes were synthesized with the aid of the cationic surfactant ctab. the coating process was explicitly investigated, and a possible formation mechanism of the mesoporous cnts@sio(2) was proposed, which reveals that the ratio of ctab/cnts plays a critical role in the coating process. furthermore, the pore size of the as-prepared mesoporous silica could be exactly controlled by using different amounts of the bromide surfactant ctab. the obtained mesoporous cnts@sio(2) composite nanomaterial was evaluated with three typical proteins, cytochrome c (cyt c), bovine serum albumin (bsa) and lysozyme (lyz), with different molecular sizes. the adsorption and desorption of binary mixtures of cyt c and bsa, cyt c and lyz, and a ternary mixture of cyt c, bsa and lyz showed that the mesoporous cnts@sio(2) are effective and highly selective adsorbents for cyt c. the as-prepared mesoporous cnts@sio(2) composites have shown effective performance in size-selective adsorption of biomacromolecules, demonstrating great potential in biomacromolecular separation.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, physical ; materials science, multidisciplinary
研究领域[WOS]	chemistry ; materials science
关键词[WOS]	multiwall carbon nanotubes ; porous alumina membrane ; molecular-sieves ; cytochrome-c ; controlled-release ; nanoparticles ; adsorption ; template ; shell ; core
收录类别	SCI
原文出处	false
语种	英语
WOS记录号	WOS:000279565900009
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/103207]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China 2.Nankai Univ, Coll Life Sci, Tianjin 300071, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116011, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Min,Wu, Yipan,Feng, Xizeng,et al. Fabrication of mesoporous silica-coated CNTs and application in size-selective protein separation[J]. journal of materials chemistry,2010,20(28):5835-5842.
APA	Zhang, Min,Wu, Yipan,Feng, Xizeng,He, Xiwen,Chen, Langxing,&Zhang, Yukui.(2010).Fabrication of mesoporous silica-coated CNTs and application in size-selective protein separation.journal of materials chemistry,20(28),5835-5842.
MLA	Zhang, Min,et al."Fabrication of mesoporous silica-coated CNTs and application in size-selective protein separation".journal of materials chemistry 20.28(2010):5835-5842.