Fe 3 O 4 –Ag 2 WO 4 : facile synthesis, characterization and visible light assisted photocatalytic activity
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© 2017 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique. A Fe3O4-Ag2WO4 nano-composite was prepared through a sono-chemical route. Its physico-chemical properties were successfully characterized using XRD, BET, VSM, UV-vis-DRS, SEM, EDX, HR-TEM and PL techniques. The surface area of the Fe3O4-Ag2WO4 nano-composite was higher than those of pure Fe3O4 and Ag2WO4. The photocatalytic activity was tested for the degradation of a fast green (FG) dye under visible light irradiation. The Fe3O4-Ag2WO4 nano-composite showed good photocatalytic activity (81.11% of FG degradation within 120 min) when compared to Fe3O4, Ag2WO4, ZnO, and TiO2 (P25). The improved photocatalytic activity of the nano-composite was ascribed to efficient electron-hole separation. Fe3O4-Ag2WO4 was found to be a durable and stable photocatalyst during recycling experiments. A plausible mechanism for the electron-hole separation process on the heterojunction was also proposed.
author list (cited authors)
Rajamohan, S., Kumaravel, V., Muthuramalingam, R., Ayyadurai, S., Abdel-Wahab, A., Sub Kwak, B., Kang, M., & Sreekantan, S.