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One-Step Route to Iron Oxide Hollow Nanocuboids by Cluster Condensation: Implementation in Water Remediation Technology

AutorBalcells, Lluis ; Martínez Boubeta, Carlos ; Cisneros Fernández, José; Simeonidis, Konstantinos; Bozzo, Bernat ; Oró, Judith ; Bagués, Núria; Arbiol, Jordi; Mestres, Narcís ; Martínez Perea, Benjamín
Palabras claveIron oxide magnetic particles
Hollow nanocuboids
Sputter gas aggregation cluster source
Water remediation
Fecha de publicación26-oct-2016
EditorAmerican Chemical Society
CitaciónACS Applied Materials and Interfaces 8(42): 28599-28606 (2016)
ResumenThe fabrication procedure of hollow iron oxide nanoparticles with a large surface to volume ratio by a single-step gas condensation process at ambient temperature is presented. Fe clusters formed during the sputtering process are progressively transformed into hollow cuboids with oxide shells by the Kirkendall mechanism at the expense of oxygen captured inside the deposition chamber. TEM and Raman spectroscopy techniques point to magnetite as the main component of the nanocuboids; however, the magnetic behavior exhibited by the samples suggests the presence of FeO as well. In addition, these particles showed strong stability after several months of exposure to ambient conditions, making them of potential interest in diverse technological applications. In particular, these hierarchical hollow particles turned out to be very efficient for both As(III) and As(V) absorption (326 and 190 mg/g, respectively), thus making them of strong interest for drinking water remediation.
Versión del editorhttp://dx.doi.org/10.1021/acsami.6b08709
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