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The availability of clean, pure water is a major challenge for the future of our society. 2-Dimensional nanosheets of GO seem promising as nanoporous adsorbent or filters for water purification; however, their processing in macroscopic filters is challenging, and their cost vs. standard polymer filters is too high. Here, we describe a novel approach to combine graphene oxide (GO) sheets with commercial polysulfone (PSU) membranes for improved removal of organic contaminants from water. The adsorption physics of contaminants on the PSU-GO composite follows Langmuir and Brunauer–Emmett–Teller (BET) models, with partial swelling and intercalation of molecules in between the GO layers. Such a mechanism, well-known in layered clays, has not been reported previously for graphene or GO. Our approach requires minimal amounts of GO, deposited directly on the surface of the polymer, followed by …
Royal Society of Chemistry
Publication date: 
1 Jan 2019

Alessandro Kovtun, Massimo Zambianchi, Cristian Bettini, Andrea Liscio, Massimo Gazzano, Franco Corticelli, Emanuele Treossi, Maria Luisa Navacchia, Vincenzo Palermo, Manuela Melucci

Biblio References: 
Volume: 11 Issue: 47 Pages: 22780-22787