Synthesis of Fe3O4/SiO2/NiO magnetic composite: Evaluation of its catalytic activity for methylene blue degradation
M Ali, A Sarkar, M Pandey, S Pandey, A Alkaim, A Aljeboree, N Alrazaq, S Baqir, F Hussein, Lili, S Alkaykh, A Mbarek, E Ali-Shattle, S Ammar, A Elaibi, I Mohamme, S Balu, K Uma, G Pan, T Yang, S Ramaraj, A Barakat, M Al-Noaimi, M Suleiman, A Barzinjy, S Hamad, S Aydin, M Ahmed, F Hussain, S Behzadi, B Nonahal, S Royaee, A Asadi, D Channei, B Inceesungvorn, N Wetchakun, Phanichphant, F Chen, F Yan, Q Chen, Y Wang, L Han, Z Chen, Fang, X Chen, Z Wu, D Liu, Gao, P David, A Karananithi, N Fathima, N Dias, J Bassin, G Sant'anna, L D'amario, J Fohlinger, G Boschloo, L Hammarstrom, E Elzahrani, C Fu, X Liu, Y Wang, L Li, Z Zhang, P Gao, J Liu, D Sun, W Ng, M Gebrezgiabher, G Gebreslassie, T Gebretsadik, G Yeabyo, F Elemo, Y Bayeh, M Thomas, W Linert, P Girginova, A Daniel-Da-Silva, C Lopes, P Figueira, M Otero, V Amaral, E Pereira, Trindade, J Han, An, P Hariani, M Said, A Rachmat, F Riyanti, H Pratiwi, W Rizki, P Hariani, M Said, Salni, N Aprianti, Y Naibaho, J Herman, N Hosny, C Hou
Abstract
<p>Photocatalytic degradation for wastewater treatment is a method that has recently attracted attention. In this research, a synthesized composite of Fe3O4/SiO2/NiO with magnetic properties was used for the photocatalytic degradation of methylene blue dye under UV light. Furthermore, the composites were characterized using XRD, FTIR, BET surface area, SEM-EDS, VSM, and UV-DRS. The results showed that the Fe3O4/SiO2/NiO composite is magnetic with a saturation magnetization of 53.84 emu/g. The Fe3O4/SiO2/NiO composite has a surface area of 128.8 m2/g, large than Fe3O4 and Fe3O/SiO2. The Fe3O4/SiO2/NiO composite has a band gap of 2.83 eV. The photocatalytic activity of Fe3O4/SiO2/NiO composite against the methylene blue dye exhibited high degradation efficiency reaching 98.51 %. The pseudo-first-order is appropriate to describe the kinetics model of photocatalytic degradation on methylene blue dye. The decrease in the degradation efficiency of the Fe3O4/SiO2/NiO composite after 5 times for the photocatalytic degradation of methylene blue dye from 98.02 % to 94.97 % indicates that the catalyst has high stability. Considering these results, the Fe3O4/SiO2/NiO composites could be used as a potential catalyst in industrial wastewater.</p>