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Vahid Vatanpour,Abbas Shockravi,Hamed Zarrabi,Zahra Nikjavan,Ali Javadi 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.30 No.-
Partially reduced graphene oxide/Ag nanocomposite (rGO/Ag) was fabricated via a green and facilemethod, from graphite oxide, AgNO3 as a precursor of Ag0, and sodium citrate as a reducing andstabilizing agent. The synthesized rGO/Ag nanocomposite was characterized by X-ray diffraction, Fouriertransform infrared spectroscopy (FT-IR) and scanning electron microscopy techniques (SEM). Theinfluence of rGO/Ag nanocomposite as a new nanofiller on the preparation of polyethersulfone (PES)mixed matrix membranes was evaluated in the cases of permeation performance, hydrophilicity, antifoulingand anti-bacterial properties. Water flux of the mixed matrix membranes was increased up to0.2 wt% rGO/Ag, reaching to 429.8 (kg/m2 h), and then reduced. The anti-bacterial activities of rGO/Agmixed matrix membranes were investigated using Gram-negative bacteria of Escherichia coli andPseudomonas aeruginosa, and Gram-positive bacteria of Staphylococcus aureus. The amount of Ag0 in thesurface of GO sheets was about 34.24 wt%. Addition of rGO/Ag nanosheets induced anti-bacterialproperties to the membranes, leading to the increase in the zone of inhibition. The flux recovery ratio(FRR) study of the membranes using bovine serum albumin (BSA) solution revealed that 0.2 wt% rGO/Agmembrane had the best fouling resistance with the FRR value of 67.2%.
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