Journal of Materials Chemistry A · 2013 · 137 citations · 47 references
Natural SciencesChemical EngineeringMaterials ScienceNanomaterialsWastewater TreatmentWater TreatmentAdsorption ProcessesIndustrial Wastewater TreatmentIron OxidesMagnetic OxidesMetal Oxide NanomaterialsSurface AdsorptionAdsorption CapacityAdsorption KineticsAdsorption-based RemediationAdsorptive TreatmentIron Oxide NanoparticlesMetal Oxide Nanomaterials For Environmental RemediationNanosheetsSol-gel Processing
Novel hierarchical core–shell iron oxide@magnesium silicate magnetic nanorods (HIO@MgSi) were fabricated via a versatile sol–gel process through hydrothermal reaction. They contain magnetic iron oxide (Fe3O4) cores and hierarchical shells (MgSi) made of ultrathin nanosheets (ca. 5 nm). Using methylene blue as a model compound, the HIO@MgSi nanorods showed fast adsorption kinetics and a superb adsorption capacity. 99.3% of methylene blue was adsorbed onto the surface of the HIO@MgSi nanorods in 40 min contact time. A maximum adsorption capacity of 2020.20 mg g−1 was achieved after 4 h. This study indicated that HIO@MgSi nanorods can be used as a potential super adsorbent to remove cationic organic pollutants effectively and rapidly from large volumes of industrial wastewater or drinking water.
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