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AuthorAlkhouzaam, Abedalkader
AuthorQiblawey, Hazim
Available date2023-12-07T07:32:03Z
Publication Date2021
Publication NameJournal of Water Process Engineering
ResourceScopus
ISSN22147144
URIhttp://dx.doi.org/10.1016/j.jwpe.2021.102120
URIhttp://hdl.handle.net/10576/50251
AbstractThe potential use of dodecylamine-functionalized graphene oxide (rGO-DDA) nanoparticles as an antifoulant and antibacterial nanofiller was investigated. GO and rGO-DDA were analyzed using Raman spectroscopy, FTIR, SEM, TEM, and TGA that all confirmed the successful functionalization of GO structure. Polysulfone (PSF) ultrafiltration membranes incorporating varied loadings of GO and rGO-DDA were then fabricated via phase inversion approach. All membranes were characterized in terms of chemical structure, morphology, hydrophilicity, porosity and mean pore size. Cross-section SEM images showed the distribution of GO and rGO-DDA between the pores and on the polymer walls. AFM results demonstrated that GO addition increased the roughness of membrane; while with rGO-DDA addition the surface became smoother. Pristine PSF and rGO-DDA based membranes exhibited similar hydrophilicity, while GO-based membranes exhibited higher hydrophilicity as revealed by contact angle measurements. Permeability, separation and antifouling experiments were performed in a cross-flow membrane setup and showed that flux decreases with the increase in GO and rGO-DDA concentration. rGO-DDA membranes showed higher antifouling and antibacterial performance compared to the pristine PSF and GO membranes. Neat PSF exhibited 65.4 % flux recovery ratio (FRR) against BSA that was increased to 86.9 % and 89.1 % with GO-0.1 and rGO-DDA-0.1, respectively. Against HA, FRR was improved from 87.8 % for neat PSF to 95.6 % and 99.3 % with GO-0.1 and rGO-DDA-0.1, respectively. Additionally, rGO-DDA membrane exhibited higher bacteriostatis rate (83.6 %) against H. aquamarina than GO membrane (62.9 %). Moreover, rGO-DDA nanoparticles exhibited excellent dispersibility in several solvents making them promising nanofillers for various membranes with high antifouling and antibacterial performance.
SponsorThis work was made possible by an Award [GSRA4-1-0504-17043] from Qatar National Research Fund (QNRF, a member of Qatar Foundation). The contents herein are solely the responsibility of the authors. Open access funding is provided by Qatar National Library . Authors would like to thank also the Central Lab Unit (CLU) and Center of Advanced Materials (CAM) in Qatar University (QU) for their support in materials characterization. We also thank Dr. Mohammad Yousaf Ashfaq, Department of Biological & Environmental Sciences of Qatar University, for his support in antibacterial activity measurements.
Languageen
PublisherElsevier
SubjectAntibacterial effect
Antifouling
Dodecylamine
Graphene oxide
Ultrafiltration
TitleSynergetic effects of dodecylamine-functionalized graphene oxide nanoparticles on antifouling and antibacterial properties of polysulfone ultrafiltration membranes
TypeArticle
Volume Number42
dc.accessType Open Access


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