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Facile Epitaxial Growth of Novel Nanoscale Ag-MAFs on Reverse Osmosis Membranes: Enhancing Performance, Antibacterial Activity, and (Bio)fouling Resistance

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Název: Facile Epitaxial Growth of Novel Nanoscale Ag-MAFs on Reverse Osmosis Membranes: Enhancing Performance, Antibacterial Activity, and (Bio)fouling Resistance
Autoři: Seyedpour, Seyedeh Fatemeh, Karami, Pooria, Khoshhal Salestan, Saeed, 1989, Aghapour Aktij, Sadegh, Singh, Upasana, Huang, Suyenna, Chew, Jia Wei, 1981, Rahimpour, Ahmad, Wishart, David S., Sadrzadeh, Mohtada
Zdroj: ACS Omega. 10(26):28191-28209
Témata: Membranes, Ions, Fluxes, Functionalization, Bacteria
Popis: The increasing demand for advanced thin-film composite (TFC) membranes stems from the limitations of current commercial membranes, particularly their vulnerability to biofouling. In this study, novel silver-based metal-azolate frameworks (Ag-MAFs) were grown insitu on the surface of TFC reverse osmosis (RO) membranes. This functionalization resulted in a 45% increase in permeate flux without compromising salt rejection (97.6%) compared to pristine TFC membranes. The surface functionalization process is rapid, non-destructive, and employs eco-friendly solvents, silver salts, and amino-benzimidazole ligands, enabling repeatable modifications without affecting separation efficiency. The successful integration of Ag-MAFs onto the membrane surface was confirmed through comprehensive chemical characterization, including Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and energy dispersive X-ray (EDX) analysis. Notably, Ag-MAFs demonstrated strong stability, with no detectable leaching or detachment after 20 days of continuous water immersion. Morphological analysis using scanning electron microscopy (SEM) and confocal microscopy revealed that Ag-MAFs nanoparticles imparted robust antibacterial activity, reducing live bacterial populations by nearly 99%. Filtration tests showed that Ag-MAFs functionalized membranes exhibited superior fouling resistance and higher water recovery ratios than pristine membranes during a 10 h filtration cycle. This study presents a scalable and reproducible approach for developing advanced antibiofouling TFC membranes capable of long-term operation, eliminating the need for module disassembly and enhancing membrane longevity in practical applications.
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Přístupová URL adresa: https://research.chalmers.se/publication/547247
https://research.chalmers.se/publication/547247/file/547247_Fulltext.pdf
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  Data: Facile Epitaxial Growth of Novel Nanoscale Ag-MAFs on Reverse Osmosis Membranes: Enhancing Performance, Antibacterial Activity, and (Bio)fouling Resistance
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  Data: <searchLink fieldCode="AR" term="%22Seyedpour%2C+Seyedeh+Fatemeh%22">Seyedpour, Seyedeh Fatemeh</searchLink><br /><searchLink fieldCode="AR" term="%22Karami%2C+Pooria%22">Karami, Pooria</searchLink><br /><searchLink fieldCode="AR" term="%22Khoshhal+Salestan%2C+Saeed%22">Khoshhal Salestan, Saeed</searchLink>, 1989<br /><searchLink fieldCode="AR" term="%22Aghapour+Aktij%2C+Sadegh%22">Aghapour Aktij, Sadegh</searchLink><br /><searchLink fieldCode="AR" term="%22Singh%2C+Upasana%22">Singh, Upasana</searchLink><br /><searchLink fieldCode="AR" term="%22Huang%2C+Suyenna%22">Huang, Suyenna</searchLink><br /><searchLink fieldCode="AR" term="%22Chew%2C+Jia+Wei%22">Chew, Jia Wei</searchLink>, 1981<br /><searchLink fieldCode="AR" term="%22Rahimpour%2C+Ahmad%22">Rahimpour, Ahmad</searchLink><br /><searchLink fieldCode="AR" term="%22Wishart%2C+David+S%2E%22">Wishart, David S.</searchLink><br /><searchLink fieldCode="AR" term="%22Sadrzadeh%2C+Mohtada%22">Sadrzadeh, Mohtada</searchLink>
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  Data: <i>ACS Omega</i>. 10(26):28191-28209
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  Data: <searchLink fieldCode="DE" term="%22Membranes%22">Membranes</searchLink><br /><searchLink fieldCode="DE" term="%22Ions%22">Ions</searchLink><br /><searchLink fieldCode="DE" term="%22Fluxes%22">Fluxes</searchLink><br /><searchLink fieldCode="DE" term="%22Functionalization%22">Functionalization</searchLink><br /><searchLink fieldCode="DE" term="%22Bacteria%22">Bacteria</searchLink>
– Name: Abstract
  Label: Description
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  Data: The increasing demand for advanced thin-film composite (TFC) membranes stems from the limitations of current commercial membranes, particularly their vulnerability to biofouling. In this study, novel silver-based metal-azolate frameworks (Ag-MAFs) were grown insitu on the surface of TFC reverse osmosis (RO) membranes. This functionalization resulted in a 45% increase in permeate flux without compromising salt rejection (97.6%) compared to pristine TFC membranes. The surface functionalization process is rapid, non-destructive, and employs eco-friendly solvents, silver salts, and amino-benzimidazole ligands, enabling repeatable modifications without affecting separation efficiency. The successful integration of Ag-MAFs onto the membrane surface was confirmed through comprehensive chemical characterization, including Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and energy dispersive X-ray (EDX) analysis. Notably, Ag-MAFs demonstrated strong stability, with no detectable leaching or detachment after 20 days of continuous water immersion. Morphological analysis using scanning electron microscopy (SEM) and confocal microscopy revealed that Ag-MAFs nanoparticles imparted robust antibacterial activity, reducing live bacterial populations by nearly 99%. Filtration tests showed that Ag-MAFs functionalized membranes exhibited superior fouling resistance and higher water recovery ratios than pristine membranes during a 10 h filtration cycle. This study presents a scalable and reproducible approach for developing advanced antibiofouling TFC membranes capable of long-term operation, eliminating the need for module disassembly and enhancing membrane longevity in practical applications.
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        Value: 10.1021/acsomega.5c02816
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      – Text: English
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      – SubjectFull: Membranes
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      – SubjectFull: Fluxes
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      – TitleFull: Facile Epitaxial Growth of Novel Nanoscale Ag-MAFs on Reverse Osmosis Membranes: Enhancing Performance, Antibacterial Activity, and (Bio)fouling Resistance
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