Journal
CHEMOSPHERE
Volume 268, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2020.129187
Keywords
Silver nanoparticles; Graphene oxide; Surface polymerization; Anti-biofouling; PVDF membrane
Categories
Funding
- National University of Singapore
- National Research Foundation, Prime Minister's Office, Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) program
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In this study, a silver nanoparticles-graphene oxide hybrid nanosheet was synthesized as a bactericidal agent to mitigate membrane biofouling, significantly impacting the membrane performance and lifespan. Through surface modification, the membrane exhibited excellent anti-microbial activity, effectively reducing the adhesion of Pseudomonas aeruginosa on the membrane surface.
Membrane biofouling poses severe impacts on the membrane lifespan and performance. In this study, a silver nanoparticles-graphene oxide hybrid nanosheet (AgNPs-GO) was synthesized as a bactericidal agent for effective membrane biofouling mitigation. The surface polymerization between polyvinyl alcohol (PVA) and AgNPs-GO nanosheet improved the stability of inorganic biocidal materials on the membrane surface and had a significant effect on the permeability and rejection performance of membranes. The PVA/AgNPs-GO modified hydrophilic polyvinylidene fluoride (H-PVDF) membrane exhibited an excellent anti-microbial activity in both static contact and filtration modes; nearly 100% inactivation of Pseudomonas aeruginosa in solution and 91% reduction in the membrane surface adhesion were found. The composite membrane with good stability and anti-microbial ability may offer an alternative to alleviate membrane biofouling problem. (C) 2020 Elsevier Ltd. All rights reserved.
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