Journal
RSC ADVANCES
Volume 5, Issue 66, Pages 53653-53659Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra05571g
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Funding
- National Science Foundation of China [21174027]
- Program for New Century Excellent Talents in University [NCET-12-0827]
- Program of Introducing Talents of Discipline to Universities [111-2-04]
- Innovation Funds for PhD Students of Donghua University [CUSF-DH-D-2015027]
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Hybrid polyvinylidene fluoride (PVDF) ultrafiltration (UF) membranes with excellent antifouling properties were prepared by non-solvent-induced phase separation through blending zwitterionic SiO2 nanoparticles. Lysine was used to modify SiO2 nanoparticles to generate a surface zwitterion of the amino acid type. Zwitterionic SiO2 nanoparticles were distributed uniformly in the membrane bulk to avoid massive agglomeration and to significantly improve the hydrophilicity and separation performance of PVDF UF membranes. The amount of BSA adsorbed on a hybrid ZP-5% membrane surface of static fouling test decreased to 10 mu g cm(-2), and the secondary water flux recovery rate (FRR) increased to more than 95% for the dynamic antifouling test of BSA and HA. The addition of zwitterionic SiO2 nanoparticles enhanced the antifouling ability of the membrane through inhibiting irreversible fouling and prolonging the service life of the PVDF UF membrane.
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