Issue 52, 2016

In situ growth of biocidal AgCl crystals in the top layer of asymmetric polytriazole membranes

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 sufficient to tune the permeance, molecular weight cut-off (MWCO) and silver loading of the final membrane.

Graphical abstract: In situ growth of biocidal AgCl crystals in the top layer of asymmetric polytriazole membranes

Supplementary files

Article information

Article type
Paper
Submitted
29 Mar 2016
Accepted
05 May 2016
First published
06 May 2016

RSC Adv., 2016,6, 46696-46701

In situ growth of biocidal AgCl crystals in the top layer of asymmetric polytriazole membranes

L. F. Villalobos, S. Chisca, H. Cheng, P. Hong, S. Nunes and K. Peinemann, RSC Adv., 2016, 6, 46696 DOI: 10.1039/C6RA08090A

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