Issue 20, 2015
From the journal:

Journal of Materials Chemistry A

Declined ionic flux through the nano-pores of vertically aligned carbon nanotubes filled with PNIPAm hydrogel†‡

Yuanyuan Pan,ab   Qiang Wu,ac   Yuyan Weng,ac   Xiaohua Zhang,*ac   Zhaohui Yang,*ac   Jianqiang Mengd  and  Ophelia K. C. Tsuie  

* Corresponding authors

a Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou, P. R. China
E-mail: yangzhaohui@suda.edu.cn, zhangxiaohua@suda.edu.cn

b Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, P. R. China

c College of Physics, Optoelectronics and Energy, Soochow University, P. R. China

d Tianjin Polytech Univ, State Key Lab Hollow Fiber Membrane Mat & Proc, Tianjin 300387, P. R. China

e Physics Department, Boston University, Boston, MA, USA

Abstract

We demonstrate a novel nano-porous membrane of 10 nm diameter multiwall carbon nanotubes (MWCNTs) filled with thermally sensitive poly(N-isopropylacrylamide) (PNIPAm) hydrogel. High-resolution transmission electron microscopy (HRTEM), micro FT-IR spectroscopy and confocal laser scanning fluorescence microscopy are used to confirm that the MWCNTs are filled with the hydrogel. An improvement in the hydrophilicity of the gel-filled nano-channels is expected to promote the migration of aqueous solutions and the transportation of water. Meanwhile a decrease in ion flux is observed after the nano-pores of MWCNTs are filled with the hydrogel. This new hydrogel filled-CNT material shows potential for nano-chromatography, water purification and use as intelligent ionic channels.

Graphical abstract: Declined ionic flux through the nano-pores of vertically aligned carbon nanotubes filled with PNIPAm hydrogel

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Article information

DOI
https://doi.org/10.1039/C5TA01749A
Article type
Paper
Submitted
09 Mar 2015
Accepted
20 Apr 2015
First published
21 Apr 2015

J. Mater. Chem. A, 2015,3, 11111-11116

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Declined ionic flux through the nano-pores of vertically aligned carbon nanotubes filled with PNIPAm hydrogel

Y. Pan, Q. Wu, Y. Weng, X. Zhang, Z. Yang, J. Meng and O. K. C. Tsui, J. Mater. Chem. A, 2015, 3, 11111 DOI: 10.1039/C5TA01749A

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