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| Autori principali: | , , , , , , , |
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| Natura: | Artículo Open Access |
| Pubblicazione: |
Wiley
2025
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| Soggetti: | |
| Accesso online: | https://onlinelibrary.wiley.com/doi/10.1002/app.57743 |
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- High‐Performance of GO / Cu‐MOFs Embedded PVDF Nanofiltration Membranes for Positively Charged Dyes and Cations Removal and Its Antibacterial Properties Hari Agung Triadi Fitri Khoerunnisa Mita Nurhayati Wen‐Da Oh Triyanda Gunawan Witri Wahyu Lestari Siew‐Chun Low Boon Seng Ooi Journal of Applied Polymer Science ABSTRACT This study aimed to fabricate graphene oxide (GO)‐embedded polyvinylidene fluoride (PVDF) membranes through a non‐solvent induced phase separation method. Different ratios of Cu‐Metal Organic Frameworks (Cu‐MOFs) were used as a nanofillers to promote the membrane's performance on ions and dyes separation. The morphology of fabricated membranes was investigated using FTIR, XRD, and SEM–EDX techniques. The fabricated membranes were tested for water permeability, ions, dyes, and Bovine Serum Albumin (BSA) rejection, and Molecular Weight Cut Off (MWCO). The BSA with initial concentrations of 100–400 mg/L and a molecular weight of 3–145 kDa were filtered via crossflow (CF) and dead‐end (DE) methods. Antibacterial activity against three strains of bacteria was assessed via total plate counting and the Kirby‐Bauer method. The incorporation of hydrophilic GO and (Cu‐MOFs) obviously altered membrane morphology, enhancing the membrane's porosity and hydrophilicity. Moreover, it improves membrane crystallinity (> 85%) as indicated by the higher XRD peak intensity and elasticity (> 300%). The membrane fabricated with a GO/Cu‐MOFs ratio of 1:3 demonstrated the highest permeability and ion rejection toward Na + , Ca 2+ , and Fe 3+ showing rejection rates that were four times higher than those of PVDF membranes with MWCO of ~3 kDa, consistent with the characteristics of loose nanofiltration membranes. The fabricated membranes showed good fouling resistance with a recovery factor ratio (FRR) of > 90% and a lower fouling ratio (Rt, Rr, and Rir) than that of the PVDF membrane. Similar results of membrane performances using dead‐end measurements were also found. The fabricated membranes exhibited superior antibacterial properties with bacterial inhibition zones of 27.5 mm ( Escherichia coli ) and 19.06 mm ( Bacillus subtilis ) strains. These results inferred that PVDF/GO/Cu‐MOFs membranes have great potential as antibiofouling and pre‐desalination membranes. 10.1002/app.57743 http://onlinelibrary.wiley.com/termsAndConditions#vor