Role of quaternary ammonium compound immobilized metallic graphene oxide in PMMA/PEG membrane for antibacterial, antifouling and selective gas permeability properties

Muhammad, Saz; Siddiq, Muhammad; Niazi, Javed H.; Qureshi, Anjum

doi:10.1007/s00289-018-2356-4

Cited by 16 publications

(11 citation statements)

References 44 publications

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“…BAC gathered the attention of the scientific community because of its physical–chemical characteristics [ 26 ] and its mechanisms of interaction with bacteria [ 27 ], later discussed in the Results and Discussion section of the present paper. Several studies regarding the immobilization of QAC compounds in nanostructured material were published [ 22 ], including the functionalization of metal oxide nanoparticles [ 28 , 29 ]. However, none of those cases include the functionalization of macroscopic metal oxide pellets.…”

Section: Introductionmentioning

confidence: 99%

New Functionalized Macroparticles for Environmentally Sustainable Biofilm Control in Water Systems

et al. 2021

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Reverse osmosis (RO) depends on biocidal agents to control the operating costs associated to biofouling, although this implies the discharge of undesired chemicals into the aquatic environment. Therefore, a system providing pre-treated water free of biocides arises as an interesting solution to minimize the discharge of chemicals while enhancing RO filtration performance by inactivating bacteria that could form biofilms on the membrane system. This work proposes a pretreatment approach based on the immobilization of an industrially used antimicrobial agent (benzalkonium chloride—BAC) into millimetric aluminum oxide particles with prior surface activation with DA—dopamine. The antimicrobial efficacy of the functionalized particles was assessed against Escherichia coli planktonic cells through culturability and cell membrane integrity analysis. The results showed total inactivation of bacterial cells within five min for the highest particle concentration and 100% of cell membrane damage after 15 min for all concentrations. When reusing the same particles, a higher contact time was needed to reach the total inactivation, possibly due to partial blocking of immobilized biocide by dead bacteria adhering to the particles and to the residual leaching of biocide. The overall results support the use of Al2O3-DA-BAC particles as antimicrobial agents for sustainable biocidal applications in continuous water treatment systems.

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Section: Introductionmentioning

confidence: 99%

New Functionalized Macroparticles for Environmentally Sustainable Biofilm Control in Water Systems

et al. 2021

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“…The fast volatilization of alcohol may create considerable surface tension and capillary forces, which can bring deformation and shrinkage to the membrane’s surface. CTAB, as a cationic surface-active agent, may induce segregation and aggregation of GO and CNTs and enhance the interfacial adhesion between the light absorber layer and the supporting substrate. − In addition to the paper substrate, the spray can be deposited on other substrate materials (Figure b), indicating that it is possible to extend the membrane evaporator to other materials systems. Importantly, based on this method, large-sized membranes can be produced on industrial production lines (Figure c,d and Figure S1a).…”

Section: Resultsmentioning

confidence: 99%

Multiscale Preparation of Graphene Oxide/Carbon Nanotube-Based Membrane Evaporators by a Spray Method for Efficient Solar Steam Generation

Zhang

Guo

et al. 2022

ACS Appl. Nano Mater.

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Solar-driven interfacial evaporation is a sustainable and efficient way of producing clean water using solar energy. Currently, most studies on solar-driven interfacial evaporation are based on small-sized evaporators, and it is still a challenge to develop an efficient, simple, and general method for producing evaporators continuously and at a large scale. Herein, we develop a spray-based method for producing graphene oxide (GO)/carbon nanotube (CNT)-based membrane evaporators at various scales. This method enables production of membrane evaporators from a lab scale to an industrial scale. Great efforts have been made to optimize the preparation and properties of the membrane evaporators. A GO-CNT/paper membrane evaporator prepared under optimized conditions exhibits a high evaporation rate of 2.1 kg m–2 h–1 with a corresponding efficiency of 90.1% under one sun irradiation. The evaporator also has high properties of water desalination, purification, and disinfection. Natural lake water evaporation tests show a high water evaporation capacity of ∼8.2 kg m–2 on a sunny day, and the salinity in the obtained water (Na+ ions, 1.2 mg L–1) is below the WHO standards for drinkable water. Overall, an efficient, simple, and scalable method for producing high-performance membrane evaporators has been demonstrated.

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“…Saz et al [ 115 ] studied the antifouling and antibacterial properties of silver (Ag)/zinc oxide (ZnO) incorporated graphene oxide (GO) nanosheets (MGO) which were modified by quarternary cetyltrimethylammonium bromide (CTAB), and it was combined in poly (methyl methacrylate) (PMMA)/polyethylene glycol (PEG) membrane. Herein, E. coli was used as a model microorganism for testing the antibacterial experiments, and bovine serum albumin (BSA) protein was adsorbed on the membrane surface to carry out the antifouling tests.…”

Section: Current Application Of Antiviral Mmmsmentioning

confidence: 99%

Antiviral Nanomaterials for Designing Mixed Matrix Membranes

et al. 2021

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Membranes are helpful tools to prevent airborne and waterborne pathogenic microorganisms, including viruses and bacteria. A membrane filter can physically separate pathogens from air or water. Moreover, incorporating antiviral and antibacterial nanoparticles into the matrix of membrane filters can render composite structures capable of killing pathogenic viruses and bacteria. Such membranes incorporated with antiviral and antibacterial nanoparticles have a great potential for being applied in various application scenarios. Therefore, in this perspective article, we attempt to explore the fundamental mechanisms and recent progress of designing antiviral membrane filters, challenges to be addressed, and outlook.

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Role of quaternary ammonium compound immobilized metallic graphene oxide in PMMA/PEG membrane for antibacterial, antifouling and selective gas permeability properties

Cited by 16 publications

References 44 publications

New Functionalized Macroparticles for Environmentally Sustainable Biofilm Control in Water Systems

New Functionalized Macroparticles for Environmentally Sustainable Biofilm Control in Water Systems

Multiscale Preparation of Graphene Oxide/Carbon Nanotube-Based Membrane Evaporators by a Spray Method for Efficient Solar Steam Generation

Antiviral Nanomaterials for Designing Mixed Matrix Membranes

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