Journal
APPLIED SURFACE SCIENCE
Volume 316, Issue -, Pages 333-340Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2014.08.004
Keywords
Adsorption membranes; Hybrid membranes; PVDF; Nano-ZnO; Removal of Cu2+
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Funding
- National Natural Science Foundation of China [21103017, 51104042]
- Fundamental Research Funds for the Central Universities [110405007]
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ZnO hybridized Polyvinylidenefluoride (PVDF/ZnO) membranes were successfully prepared by two different methods. One method was immersing the pretreated PVDF films in the ZnO suspensions (method A), and the other was blending ZnO nanoparticles with PVDF solution and then casting films (method B). The structure of these PVDF/ZnO hybrid membranes were characterized by SEM, XRD and ATR-IR, and the performances of hybrid membranes were determined through the measurements of contact angle, pure water flux and static adsorption toward BSA. The results showed that the ZnO nanoparticles were incorporated into the pores and onto the surface of PVDF, and more uniform hybrid structure was obtained by method B. The ATR-IR spectra revealed that the weak physical interaction played role in the construction of hybrid membranes. Compared with the pristine PVDF films, the hydrophilicity, permeability and antifouling performance of hybrid membranes were improved. And more notably, the hybrid membranes also showed better adsorption and desorption properties for copper ions, which was rarely reported. (C) 2014 Elsevier B. V. All rights reserved.
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