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Nanomaterials 2018, 8(9), 710;

A Magnetic Adsorbent for the Removal of Cationic Dyes from Wastewater

Henan Key Laboratory of Polyoxometalates, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
Authors to whom correspondence should be addressed.
Received: 26 August 2018 / Revised: 5 September 2018 / Accepted: 7 September 2018 / Published: 10 September 2018
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In this article, a study was presented on the adsorption activity of a new nanocomposite particle Fe3O4@1, which was synthesized by combining [Cu(HL)2]2H2[P2Mo5O23]·10H2O (1) (HL = 2-acetylpyridine semicarbazone) and Fe3O4 nanoparticles. Transmission electron microscopy and X-ray powder diffraction analyses revealed that Fe3O4@1 possessed high crystallinity with an average particle size of 19.1 nm. The adsorption activity of the as-prepared Fe3O4@1 was investigated by photometrically monitoring the removal of methylene blue, rhodamine B, safranine T, gentian violet, fuchsin basic, and methyl orange from aqueous solutions. Significantly, we could easily separate Fe3O4@1 from the reaction media by applying an external magnet. Furthermore, the recycling performance was observed using methylene blue, revealing the recyclability and high stability of Fe3O4@1. It was shown that Fe3O4@1 is a promising candidate material for adsorbing cationic dyes in aqueous media. View Full-Text
Keywords: nanocomposite particles; polyoxometalates; adsorption; magnetic properties nanocomposite particles; polyoxometalates; adsorption; magnetic properties

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Ji, Y.; Ma, C.; Li, J.; Zhao, H.; Chen, Q.; Li, M.; Liu, H. A Magnetic Adsorbent for the Removal of Cationic Dyes from Wastewater. Nanomaterials 2018, 8, 710.

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