Ganjar Fadillah, Endang Ciptawati, Habibi Hidayat, Aprilia Indah Noviyanti
This study aims to determine the effectiveness of graphite oxide (GO) material modified acetic acid as an antibacterial. Graphite oxide test material is modified by acetic acid with concentrations of 1%, 3%, and 5%. The results of the antimicrobial activity test obtained optimum concentrations for GO/Acetate material types with a concentration of 3% in Escherichia coli bacteria. The characteristics of GO/Acetate with Scanning Electronic Microscopy (SEM) showed there was a difference in the morphological surface of GO material modified acetic acid at a concentration of 5% with a tighter surface. The Fourier transform Infra Red (FTIR) results indicated absorption at wavenumbers of 3420, 3422, and 3439 cm-1 which sharp and very typical vibration of O-H group concluded that graphite oxide has water content in it. Wavenumbers of 1428 and 1385 cm-1, showed an acetyl group, CH3. Wavenumbers of 1627 and 1624 cm-1 displayed an aromatic C=C functional group. While wavenumbers of 1054, 1113, and 1029 cm-1 illustrated the C-O group. The antimicrobial activity test showed that the presence of acetate functional group on the surface of GO can improve the performance material as antibacterial agent. © 2022 Author(s).
Chemistry Department, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia, Yogyakarta, 55584, Indonesia; Chemistry Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Malang, 65145, Indonesia