Simultaneous removal of Co(II) and 1-naphthol by core–shell structured Fe3O4@cyclodextrin magnetic nanoparticles

• Published in: Carbohydrate polymers Vol. 114; pp. 521 - 529
• Main Authors: Zhang, Xiaobao, Wang, Yong, Yang, Shitong
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 19.12.2014; Elsevier
• Subjects: 1-Naphthol; Applied sciences; Co(II); Composites; Exact sciences and technology; Fe3O4@CD MNPs; Forms of application and semi-finished materials; General purification processes; Magnetic separation; Pollution; Polymer industry, paints, wood; Simulated effluent; Technology of polymers; Wastewaters; Water treatment and pollution; Co(II); Fe3O4@CD MNPs; 1-Naphthol; Magnetic separation; Simulated effluent; Iron oxide; Metal ion; Submicron particle; O; Magnetite; Batchwise; Aqueous medium; Cobalt II; pH; Manufacturing; Coprecipitation; Growth from solution; @CD MNPs; Fe; Experimental study; Composite particles; Sorption; Pollutant; Cyclodextrin; Magnetic particles; Ionic strength; Oside polymer; Monodispersed particle; Naphthol; Kinetics; Spherical particle; Waste water purification; Sorbent
• ISSN: 0144-8617; 1879-1344
• DOI: 10.1016/j.carbpol.2014.08.072

•Core–shell structured Fe3O4@CD MNPs are prepared via chemical co-precipitation approach.•Fe3O4@CD MNPs are low-cost and eco-friendly as the raw materials are abundant and harmless.•Fe3O4@CD MNPs can be easily separated from the aqueous phase with a magnet.•Fe3O4@CD MNPs exhibit favorable performance toward the removal of Co(II) and 1-naphthol.•Fe3O4@CD MNPs show great application potential in environmental protection field. Herein, β-cyclodextrin (β-CD) was introduced on the surfaces of Fe3O4 particles via the chemical co-precipitation approach. The as-prepared Fe3O4@CD MNPs can be easily separated from the aqueous phase with a magnet. The removal performance of Fe3O4@CD MNPs toward Co(II) and 1-naphthol were investigated by using the batch technique. The maximum sorption capacities of Fe3O4@CD MNPs toward Co(II) and 1-naphthol are higher than a series of adsorbent materials. The simultaneous removal of Co(II) and 1-naphthol is achieved via the binding of Co(II) on the external surface sites of Fe3O4@CD MNPs and the incorporation of 1-naphthol into the hydrophobic cavity of surface-coated β-CD. The Fe3O4@CD MNPs exhibit favorable removal performance toward Co(II) and 1-naphthol from the simulated effluent. The experimental results herein suggest that Fe3O4@CD MNPs can be used as cost-effective material for the purification of co-contaminated water systems.