Synthesis And Charactherization Of Fe3o4-Activated Carbon And It^s Application To Adsorb Methylene Blue Devika Safitri Dirgayanti 1, Soerja Koenarpadi 1*, Noor Hindryawati 1
Department of Chemistry, Faculty of Mathematics and Natural Sciences,
Mulawarman University, Samarinda 75123, East Kalimantan, Indonesia
Abstract
Synthesis and characterization of Fe3O4-Activated Carbon (Fe3O4-AC) and the application to adsorb methylene blue has been conducted. The Fe3O4-AC was synthesized using co-preciptation method by addition ammonium hydroxide 25%. The Fe3O4 was prepared from mixing mole ratio of Fe3+ and Fe2+ = 3:2 and AC was made from egg rack. Composite of Fe3O4-AC was characterized using Fourier Transform Infra-Red (FTIR), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD) and Vibrating Sample Magnetometer (VSM). FTIR characterization was indicated the appearance peak of a C-O vibration at 1033.85 cm-1 and functional group of Fe-O at 540.07 cm-1. XRD pattern of Fe3O4-AC was presence peak of crystal structure Fe3O4 even though it^s small intencity. SEM image of Fe3O4-AC was spherical in shape with the denser pore of structure. The saturation magnetization of Fe3O4-AC was lower than Fe3O4. The result showed that adsorption of methylene blue on Fe3O4-AC and AC were optimum at pH 7. The sorption of methylene blue in Fe3O4-AC and AC was 126.043 and 102.82 mg/g, respectively. The performance of Fe3O4-AC was greater than that of AC.
Keywords: synthesis, characterization, Fe3O4, activated carbonl, adsorption, methylene blue
Topic: Environmental Science, Technology, and Education
