Muqoyyanah Muqoyyanah, Fitri Khoerunnisa, Murni Handayani, Yosephin Dewiani Rahmayanti, Hari Agung Triadi, Riri Uswatun Annifah, Yurin Karunia Apsha Albaina Iasya, Triyanda Gunawan, Witri Wahyu Lestari, Eli Hendrik Sanjaya, Wijayanti Dwi Astuti
In this work, a different ratio of silver nanoparticles (Ag NPs) was used as a nanofiller on graphene oxide (GO)-embedded polyvinylidene fluoride (PVDF) membranes fabrication through a non-solvent induced phase separation method. The morphology of fabricated membranes was investigated using FTIR, XRD, and SEM-EDX techniques. The fabricated membranes were tested for Bovine Serum Albumin (BSA) rejection and Molecular Weight Cut Off (MWCO) with various initial concentrations of 100 – 400 ppm and 6 – 145 kDa, respectively using a crossflow method, as well as antibacterial activity against four strains bacteria via total plate counting and Kirby-Bauer method. The incorporation of hydrophilic GO and Ag NPs obviously alters membrane morphology, enhances membrane's porosity and hydrophilicity. Moreover, it improves membrane crystallinity (> 70%) as indicated by the higher XRD peaks intensity. Based on the crossflow measurements, the membrane fabricated with GO and Ag ratio of 1: 3 (PVDF/GO/AgNPs – 3) demonstrated the highest BSA flux of 83.81 L/m2 h, which was third-fold higher than that of PVDF membrane as well as high BSA rejection (> 94%) and MWCO of ∼3 kDa. According to the observation, PVDF/GO/AgNPs – 3 also possessed a high bacteria killing ratio of > 94% and a large inhibition zone of ≥ 1.5 mm toward all bacteria strains. These results inferred that PVDF/GO/Ag membrane has great potential as antibiofouling membranes. © 2023 Elsevier Ltd
Research Center for Advanced Materials, National Research and Innovation Agency (BRIN), Banten, South Tangerang, 15314, Indonesia; Department of Physics, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, Perak, Tanjung Malim, 35900, Malaysia; Department of Chemistry, Indonesia University of Education, Bandung, 40154, Indonesia; Department of Chemistry, Faculty of Science and Data Analytics, Sepuluh Nopember, Institute of Technology, East Java, 60111, Indonesia; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sebelas Maret University (UNS), Surakarta, 57126, Indonesia; Department of Chemistry, Universitas Negeri Malang, Malang, 90222, Indonesia; Department of Electrical Engineering and Informatics, Vocational College, Universitas Gadjah Mada, Yogyakarta, 55281, Indonesia
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