Phosphotungstic acid supported on magnetic core–shell nanoparticles with high photocatalytic activity |
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| Affiliation: | 1. Basic Science Department, High Institute of Engineering and Technology, El-Arish, North Sinai, Egypt;2. Department of Physics, Faculty of Science at New Damietta, Damietta University, 34517 New Damietta, Egypt;3. Solid State Electronics Laboratory, Solid State Physics Department, Physics Division, National Research Centre, 33 El-Bohouth St., Dokki, Giza 12622, Egypt;1. National Institute for Research and Development in Electrochemistry and Condensed Matter, Condensed Matter Department, P. Andronescu no. 1, Timisoara 300254, Romania;2. West University of Timisoara, Vasile Parvan 4, 300223 Timisoara, Romania;3. Institute of Chemistry Timisoara of Romanian Academy, Bvd. Mihai Viteazul no. 24, 300223, Romania;1. Department of Physics, Arab-American University, Jenin, West Bank, Palestine;2. Group of Physics, Faculty of Engineering, Atilim University, 06836 Ankara, Turkey;3. Physics Department, Sciences Faculty for Girls, King Abdulaziz University, Jeddah, Saudi Arabia;4. Department of Physics, Middle East Technical University, 06800 Ankara, Turkey;5. Virtual International Scientific Research Centre, Baku State University, 1148 Baku, Azerbaijan;1. Lesya Ukrainka Eastern European National University, 43025 Lutsk, Ukraine;2. Semiconductor Physics Department and Institute of Applied Research, Vilnius University, Saulėtekio al. 9, bldg.3, LT-10222 Vilnius, Lithuania;1. Laboratoire de Valorisation des Matériaux Utiles (LVMU), Centre National des Recherches en Sciences des Matériaux, Technopole de Borj cedriaB.P., 73-8027 Soliman, Tunis, Tunisia;2. Photovoltaic Laboratory, Research and Technology Centre Energy, Borj-Cedria Science and Technology Park, Tunisia |
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| Abstract: | Fe3O4@SiO2@HPW (12-tungstophosphoric acid) nanoparticles have been successfully obtained by a simple solvothermal and impregnation process. The as-obtained products were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), fourier transform infrared spectrum (FT-IR), inductively coupled plasma (ICP) and MPM5-XL-5 superconducting quantum interference device (SQUID). The results revealed that the heteropolyacids were successfully grown on the Fe3O4@SiO2 nanoparticles. The photocatalytic studies suggested that the Fe3O4@SiO2@HPW nanoparticles show excellent photocatalytic efficiency for the degradation of Rhodamine B (RB) under UV light irradiation. More importantly, the obtained nanoparticles (Fe3O4@SiO2@HPW) could be effectively separated for reuse by simply applying an external magnetic field. Furthermore, the synthesized nanoparticles could keep their efficiency till four cycles. |
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| Keywords: | Heteropolyacids Core–shell nanoparticles Photocatalysis Magnetic property |
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