title: Inorganic Photocatalytic Enhancement: Activated RhB Photodegradation by Surface Modification of SnO2Nanocrystals with V2O5-like species.
abstract: SnO2nanocrystals were prepared by precipitation in dodecylamine at 100 °C, then they were reacted with vanadium chloromethoxide in oleic acid at 250 °C. The resulting materials were heat-treated at various temperatures up to 650 °C for thermal stabilization, chemical purification and for studying the overall structural transformations. From the crossed use of various characterization techniques, it emerged that the as-prepared materials were constituted by cassiterite SnO2nanocrystals with a surface modified by isolated V(IV) oxide species. After heat-treatment at 400 °C, the SnO2nanocrystals were wrapped by layers composed of vanadium oxide (IV-V mixed oxidation state) and carbon residuals. After heating at 500 °C, only SnO2cassiterite nanocrystals were obtained, with a mean size of 2.8 nm and wrapped by only V2O5-like species. The samples heat-treated at 500 °C were tested as RhB photodegradation catalysts. At 10-7M concentration, all RhB was degraded within 1 h of reaction, at a much faster rate than all pure SnO2materials reported until now.
authors.affiliation: Istituto per la Microelettronica e i Microsistemi, IMM-CNR, Via Monteroni, 73100 Lecce, Italy.
authors.forename: Mauro
authors.initials: M
authors.lastname: Epifani
authors.affiliation: Istituto per lo Studio dei Materiali Nanostrutturati, ISMN-CNR, PO Box 10, 00015 Monterotondo Stazione, Roma, Italy.
authors.forename: Saulius
authors.initials: S
authors.lastname: Kaciulis
authors.affiliation: Istituto per lo Studio dei Materiali Nanostrutturati, ISMN-CNR, PO Box 10, 00015 Monterotondo Stazione, Roma, Italy.
authors.forename: Alessio
authors.initials: A
authors.lastname: Mezzi
authors.affiliation: Istituto di Cristallografia, IC-CNR, Via Giovanni Amendola, 122/O, 70126 Bari, Italy.
authors.forename: Davide
authors.initials: D
authors.lastname: Altamura
authors.affiliation: Istituto di Cristallografia, IC-CNR, Via Giovanni Amendola, 122/O, 70126 Bari, Italy.
authors.forename: Cinzia
authors.initials: C
authors.lastname: Giannini
authors.affiliation: Electrochemical Processes Unit, IMDEA Energy Institute, Avda. Ramón de la Sagra, 3 28935 Móstoles, Spain.
authors.forename: Raül
authors.initials: R
authors.lastname: Díaz
authors.affiliation: NMR Unit, Centro de Apoyo Tecnológico, Universidad Rey Juan Carlos, c/Tulipán, s/n, 28933 Móstoles, Spain.
authors.forename: Carmen
authors.initials: C
authors.lastname: Force
authors.affiliation: Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
authors.forename: Aziz
authors.initials: A
authors.lastname: Genç
authors.affiliation: Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain.|ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Catalonia, Spain.
authors.forename: Jordi
authors.initials: J
authors.lastname: Arbiol
authors.affiliation: Istituto per la Microelettronica e i Microsistemi, IMM-CNR, Via Monteroni, 73100 Lecce, Italy.
authors.forename: Pietro
authors.initials: P
authors.lastname: Siciliano
authors.affiliation: Department of Information Engineering, Brescia University, Via Valotti 9, 25133 Brescia, Italy.|CNR-INO SENSOR Lab, Via Branze 45, 25123 Brescia, Italy.
authors.forename: Elisabetta
authors.initials: E
authors.lastname: Comini
authors.affiliation: Luleå University of Technology, 971 98 Luleå, Sweden.
authors.forename: Isabella
authors.initials: I
authors.lastname: Concina