A graphene oxide facilitated a highly porous and effective antibacterial regenerated cellulose membrane containing stabilized silver nanoparticles

作者：Chook, Soon Wei; Chia, Chin Hua^*; Zakaria, Sarani; Ayob, Mohd Khan; Huang, Nay Ming; Neoh, Hui Min; He, Meng; Zhang, Lina; Jamal, Rahman

来源：Cellulose, 2014, 21(6): 4261-4270.

DOI：10.1007/s10570-014-0395-z

• Antibacterial
• Cellulose nanocomposite membrane
• Graphene oxide
• Silver nanoparticles

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.

• 出版日期2014-12
• 单位武汉大学