ACADSTAFF UGM
| Title | : | High reusability of green-synthesized Fe3O4/TiO2 photocatalyst nanoparticles for efficient degradation of methylene blue dye |
| Author | : |
RIVALDO MARSEL T (1) NURUL IMANI I (2) Daiki Oshima (3) Takeshi Kato (4) Dr.Eng. Edi Suharyadi, S.Si., M.Eng. (5) |
| Date | : | 12 2022 |
| Keyword | : | Green-synthesized,Fe3O4,Photocatalyst,Nanoparticle Green-synthesized,Fe3O4,Photocatalyst,Nanoparticle |
| Abstract | : | This study investigates photocatalytic degradation performance of Fe3O4/TiO2 nanoparticles (NPs) green-synthesized using Moringa oleifera leaf extract. A coprecipitation synthesis method was successfully used to synthesize NPs of various concentrations and the magnetic properties of the photocatalyst was further explored so that it could be reused. X-ray diffraction and selected area electron diffraction showed that TiO2 has a tetragonal structure and Fe3O4 has an inverse spinel cubic structure. The prepared transmission electron microscopy image of Fe3O4/TiO2 showed that it was almost spherical, not uniform, and slightly dispersed under agglomerated conditions due to the presence of a TiO2 boundary. Besides, the chemical elements are confirmed by energy-dispersive X-ray spectroscopy. Fourier-transform infrared spectra showed functional groups namely C–H, Cdouble bondO, Cdouble bondC, and C–N which indicating successful green synthesis. In addition, the presence of Fe–O functional groups at 551.8–620.3 cm−1 and Ti-O at 400–600 cm−1 also suggests the formation of NPs. A vibrating sample magnetometer showed that the Fe3O4/TiO2 NPs exhibited saturation magnetization in the range of 11.15–30.38 emu/g, with a coercivity value of approximately 55 Oe. The degradation efficiency of methylene blue (MB) was optimal for Fe3O4:TiO2 at a concentration of 1:7 which reached 99.9?gradation for two hours for uptake every 20 min. Owing to the magnetic potential of the synthesized NPs, they could be recycled up to four times without significant loss of activity. Therefore, green synthesis of Fe3O4/TiO2 NPs is promising for effective and efficient removal of organic pollutants in various environment-related applications. |
| Group of Knowledge | : | Fisika |
| Original Language | : | English |
| Level | : | Internasional |
| Status | : |
Published
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