Built-up superhydrophobic composite membrane with carbon nanotubes for water desalination

Bowu Zhang; Lixia Liu; Siyuan Xie; Fei Shen; Hui Yan; Huanhuan Wu; Yinhua Wan; Ming Yu; Hongjuan Ma; Linfan Li; Jingye Li

doi:10.1039/C3RA47436D

Built-up superhydrophobic composite membrane with carbon nanotubes for water desalination†

Bowu Zhang,‡^a Lixia Liu,‡^bc Siyuan Xie,^ac Fei Shen,*^b Hui Yan,^b Huanhuan Wu,^bc Yinhua Wan,^b Ming Yu,^a Hongjuan Ma,^a Linfan Li^a and Jingye Li*^a

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* Corresponding authors

^a TMSR Research Center and CAS Key Laboratory of Nuclear Radiation and Nuclear Energy Techniques, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, P. R. China
E-mail: jingyeli@sinap.ac.cn
Tel: +86-21-39194505

^b National Key Lab of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
E-mail: fshen@ipe.ac.cn
Tel: +86-10-82544991

^c University of Chinese Academy of Sciences, Beijing 100049, P. R. China

Abstract

Superhydrophobic porous composite membranes are successfully prepared by using poly(vinyl acetate) functionalized multi-walled carbon nanotubes and tested for water desalination under a direct contact membrane distillation (DCMD) method. The permeate flux of the composite membranes remains greater than 20 kg m⁻² h⁻¹ and the salt rejection greater than 99.5% when tested with 3.5% NaCl solution at 70 °C. The water contact angle of the composite membranes remains greater than 150° after DCMD testing for 2 hours.

RSC Advances

Built-up superhydrophobic composite membrane with carbon nanotubes for water desalination†

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Built-up superhydrophobic composite membrane with carbon nanotubes for water desalination

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