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A graphene oxide facilitated a highly porous and effective antibacterial regenerated cellulose membrane containing stabilized silver nanoparticles |
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| Authors: | Soon Wei Chook Chin Hua Chia Sarani Zakaria Mohd Khan Ayob Nay Ming Huang Hui Min Neoh Meng He Lina Zhang Rahman Jamal |
| Institution: | 1. School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia 2. School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia 3. Physics Department, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia 4. UKM Medical Molecular Biology Institute, Universiti Kebangsaan Malaysia, Cheras, 56000, Kuala Lumpur, Malaysia 5. Department of Chemistry, Wuhan University, Wuhan, 430072, China |
| Abstract: | Regenerated nanocomposite cellulose membranes embedded with silver nanoparticles (AgNP) and AgNP-graphene oxide (AgGO) were prepared in this study. The as-synthesized AgNP and AgGO were added respectively to a cellulose solution that was prepared by dissolving cellulose in a precooled NaOH/urea (NU) solvent. The solution mixtures were further regenerated into nanocomposite membranes through coagulation in an acidic solution. UV-Vis and TEM results revealed the improved stability of the AgGO compared to that of the AgNP in NU solutions. As revealed by FESEM, the AgGO nanocomposite membrane possessed a more porous structure than a membrane containing AgNP. Antibacterial tests demonstrated that the cellulose membrane of AgGO inhibited the growth of both Staphylococcus aureus and Escherichia coli more effectively than the AgNP nanocomposite membrane, with a lower concentration of AgGO. This work provides a proven and effective method to prepare novel functional cellulose membranes with antibacterial properties, thus broadening the applications of cellulose. |
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