In-situ Growth of Biocidal AgCl Crystals in the Top Layer of Asymmetric Polytriazole Membranes

Luis Francisco Villalobos, Stefan Chisca, Hong Cheng, Pei-Ying Hong, Suzana Pereira Nunes, Klaus-Viktor Peinemann

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Scalable fabrication strategies to concentrate biocidal materials in only the surface of membranes are highly desirable. In this letter, tight-UF polytriazole membranes with a high concentration of biocide silver chloride (AgCl) crystals dispersed in only their top layer are presented. They were made following a simple dual-bath process that is compatible with current commercial membrane casting facilities. These membranes can achieve a 150-fold increase in their antimicrobial character compared to their silver-free counterpart. Moreover, fine-tuning of their properties is straightforward. A change in the silver concentration in one of the baths is enough to tune the permeance, molecular weight cut-off (MWCO) and silver loading of the final membrane.
Original languageEnglish (US)
Pages (from-to)46696-46701
Number of pages6
JournalRSC Adv.
Volume6
Issue number52
DOIs
StatePublished - 2016

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