title: One-Step Route to Iron Oxide Hollow Nanocuboids by Cluster Condensation: Implementation in Water Remediation Technology.
abstract: The 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.
authors.affiliation: Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC) , 08193 Bellaterra, Spain.
authors.forename: Lluís
authors.initials: L
authors.lastname: Balcells
authors.affiliation: Santiago de Compostela , Santiago, Spain.
authors.forename: Carlos
authors.initials: C
authors.lastname: Martínez-Boubeta
authors.affiliation: Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC) , 08193 Bellaterra, Spain.
authors.forename: José
authors.initials: J
authors.lastname: Cisneros-Fernández
authors.affiliation: Department of Physics, Aristotle University of Thessaloniki , 54124 Thessaloniki, Greece.
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Simeonidis
authors.affiliation: Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC) , 08193 Bellaterra, Spain.
authors.forename: Bernat
authors.initials: B
authors.lastname: Bozzo
authors.affiliation: Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC) , 08193 Bellaterra, Spain.
authors.forename: Judith
authors.initials: J
authors.lastname: Oró-Sole
authors.affiliation: Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC) , 08193 Bellaterra, Spain.
authors.forename: Núria
authors.initials: N
authors.lastname: Bagués
authors.affiliation: Institució Catalana de Recerca i Estudia Avançats (ICREA) , 08093 Barcelona, Spain.
authors.forename: Jordi
authors.initials: J
authors.lastname: Arbiol
authors.affiliation: Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC) , 08193 Bellaterra, Spain.
authors.forename: Narcís
authors.initials: N
authors.lastname: Mestres
authors.affiliation: Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC) , 08193 Bellaterra, Spain.
authors.forename: Benjamín
authors.initials: B
authors.lastname: Martínez
keywords: hollow nanocuboids; iron oxide magnetic particles; sputter gas aggregation cluster source; water remediation