Improvement of photocatalyst properties of magnetic NPs by new anionic surfactant

In this research, Fe3O4 NPs was synthesized by co-precipitation approach. Then SiO2 shell was grown on the Fe3O4 core. Synthesized NPs were characterized by means of XRD, FTIR, VSM, TGA, SEM and TEM. The magnetic properties of core and core-shell NPs was 74 and 42 emu/g, respectively. The TEM pictur...

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Bibliographic Details
Published in:Materials chemistry and physics 2019-02, Vol.224, p.279-285
Main Authors: Farahbakhsh, Fatemeh, Ahmadi, Mehdi, Hekmatara, Seyedeh Hoda, Sabet, Mohammad, Heydari-Bafrooei, Esmaeil
Format: Article
Language:English
Subjects:
Anionic surfactant
Degradation
Dyes
Fe3O4
Fe3O4@SiO2
Iron oxides
Magnetic properties
Methylene blue
Photocatalyst
Photocatalysts
Shells
Silicon dioxide
Sodium citrate
Synthesis
Tri sodium citrate
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Summary:In this research, Fe3O4 NPs was synthesized by co-precipitation approach. Then SiO2 shell was grown on the Fe3O4 core. Synthesized NPs were characterized by means of XRD, FTIR, VSM, TGA, SEM and TEM. The magnetic properties of core and core-shell NPs was 74 and 42 emu/g, respectively. The TEM picture of core-shell was showed thickness shell of SiO2 on the Fe3O4 NPs. The size of this shell about 2.5nmWhich caused the core magnetic property to be well preserved. Photocatalyst activity of the synthesized NPs was investigated by using methyl orange (MO) and methylene blue (MB) as pollutant at different pH. For first time sodium citrate was used to improvement photo-degradation. The Fe3O4 indicated good photocatalyst activity for photo-degradation and it's activity was considerably increased after SiO2 shell growth. [Display omitted] •Fe3O4 and Fe3O4@SiO2 Magnetic nanoparticles were synthesis.•Investigation photo-degradation of this particles in difference pH.•Improvement of Photocatalyst Properties of Magnetic NPs by Trisodium citrate.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2018.11.074