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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: The Structure and Performance of Sliver/Polyelectrolyte Composite Nanofiltration Membrane
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 516-520)
Author(s): Zhi-yuan Cao, Department of Chemistry, Shanghai University, Shanghai,China
Jian-hui Fang, Department of Chemistry, Shanghai University, Shanghai,China Nano Science and Technology Research Center, Shanghai University, Shanghai,China
Xia Shen, Department of Chemistry, Shanghai University, Shanghai,China
Li-yi Shi, Department of Chemistry, Shanghai University, Shanghai,China Nano Science and Technology Research Center, Shanghai University, Shanghai,China
Abstract: Multilayer polyelectrolyte films containing silver as anti-bacterial nanofiltration membranes were prepared by alternating adsorption of PAH-AgCl complex and polyelectrolyte followed by chemical reduction of AgCl with NaBH4. The PAH-AgCl complex was prepared by dissolving AgNO3 in PAH solution in an ultrasonic bath. SEM and UV-visible transmission spectra were used for film characterization. Silver particles are prepared successfully within the polyelectrolyte multilayer films. The particles are well distributed throughout the film and the particle sizes 10~20nm. The membrane ([PSS/ PDADMAC]3[PAS/PAH-Ag]3PSS) gives a high rejection to negative divalent-ions, up to 93%. These membranes had an excellent anti-bacterial activity in water; the bacteria-killing efficiency achieved 99%.
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