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题名: Fabrication of mesoporous silica-coated CNTs and application in size-selective protein separation
作者: Zhang, Min1;  Wu, Yipan2;  Feng, Xizeng2;  He, Xiwen1;  Chen, Langxing1;  Zhang, Yukui1, 3
通讯作者: 陈朗星 ;  张玉奎
刊名: JOURNAL OF MATERIALS CHEMISTRY
发表日期: 2010
DOI: 10.1039/b925137e
卷: 20, 期:28, 页:5835-5842
收录类别: SCI
文章类型: Article
部门归属: 18
项目归属: 1810
产权排名: 3;6
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
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.
关键词[WOS]: MULTIWALL CARBON NANOTUBES ;  POROUS ALUMINA MEMBRANE ;  MOLECULAR-SIEVES ;  CYTOCHROME-C ;  CONTROLLED-RELEASE ;  NANOPARTICLES ;  ADSORPTION ;  TEMPLATE ;  SHELL ;  CORE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000279565900009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/103207
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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

Recommended Citation:
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.
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