Fig. 15.

Several typical NFN membranes based on different polymer systems fabricated in our laboratory. (a) PAA (reprinted with permission from [106]. © 2010 IOP Publishing Ltd.); (b) PA-6 (reprinted with permission from [27]. © 2011 Royal Society of Chemistry); (c) PANI/PA-6 (reprinted with permission from [28]. © 2011 Royal Society of Chemistry); (d) PA-66; (e) PVA/ZnO (reprinted with permission from [164]. © 2008 Elsevier B.V.); (f) PVA/SiO₂[99]; (g) Gelatin, Reprinted with permission from [108]. © 2011 Elsevier Ltd.; (h) CS; (i) PU (reprinted with permission from [30]. © 2011 WILEY-VCH Verlag GmbH & Co.).