Preparation and characterization of ZnO/polyethersulfone (PES) hybrid membranes

With nano-ZnO as an additive, polyethersulfone (PES) membranes and a series of ZnO/PES hybrid membranes were prepared by a phase-inversion method. Experimental results show that, with the increase of addition weight of nano-ZnO the contact angle decreases and the thermo decomposition temperature inc...

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Bibliographic Details
Published in:Desalination 2012-05, Vol.293, p.21-29
Main Authors: Shen, Liguo, Bian, Xiaokai, Lu, Xiaofeng, Shi, Liuqing, Liu, Zhongying, Chen, Lifang, Hou, Zhengchi, Fan, Kai
Format: Article
Language:English
Subjects:
Applied sciences
contact angle
desalination
Exact sciences and technology
Hybrid membrane
Nano-ZnO
Pollution
Polyethersulfone
porosity
temperature
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Summary:With nano-ZnO as an additive, polyethersulfone (PES) membranes and a series of ZnO/PES hybrid membranes were prepared by a phase-inversion method. Experimental results show that, with the increase of addition weight of nano-ZnO the contact angle decreases and the thermo decomposition temperature increases. The porosity of ZnO/PES hybrid membrane is improved by adding nano-ZnO. The flux of ZnO/PES hybrid membrane exhibits an improvement of 254% relative to that of the PES membrane, whereas the rejection is changed a little. After 90min of continuous filtrating of BSA solution (1g/L, pH=7.4), the flux decreased ratio of the ZnO/PES hybrid membrane (with 0.3g of added nano-ZnO) is only 7.8%, which implies that the antifouling properties are significantly improved relative to those of the PES membrane. ► A series of ZnO/PES hybrid membrane was achieved and characterized. ► The porosity is improved by adding nano-ZnO. ► The flux represents an improvement of 254%. ► The antifouling properties are significantly improved.
ISSN:0011-9164
1873-4464
DOI:10.1016/j.desal.2012.02.019