Abstract
ABSTRACT Nanofiltration membranes with fast water permeability and good separation efficiency along with acceptable stability are an urgent need for various applications. Herein, graphene oxide (GO) is functionalised with silver nanoparticles (Ag NPs) using different ratios (0.01, 0.02, and 0.03). The Ag NPs have been prepared from orange peel extractive by a green chemical method. The GO/Ag NPs functionalised membranes (ratio 0.03) with thickness ~385 ± 10 nm exhibit an excellent selectivity for various dye molecules with good water permeance, i.e. methylene blue (99 ± 1% rejection and permeability ~287 ± 10 L.m−2.h−1.bar−1), crystal violet (rejection 99 ± 1% and permeability 862 ± 10 L.m−2.h−1.bar−1), safranin O (rejection 99 ± 1% and permeability 625 ± 10 L.m−2.h−1.bar−1) etc. Further, the GO/Ag NPs functionalised membrane (Thickness ~385 ± 10) has been used for organic solvent nanofiltration (OSN), and the membrane exhibits high separation efficiency up to ~97% for several dye molecules in methanol solvent along with good permeance (530 ± 20 L.m−2.h−1.bar1). Besides this, these membranes are stable under different conditions for up to ~70 days. We hope that the good separation efficiency and high permeance of GO/Ag NPs composite membranes can be utilised in various wastewater treatment, desalination, and organic solvent nanofiltration applications.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
