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Epifani M, Kaciulis S, Mezzi A, Altamura D, Giannini C, Díaz R, Force C, Genç A, Arbiol J, Siciliano P, Comini E, Concina I. Inorganic Photocatalytic Enhancement: Activated RhB Photodegradation by Surface Modification of SnO 2 Nanocrystals with V 2O 5-like species. Sci Rep 2017; 7:44763. [PMID: 28300185 PMCID: PMC5353695 DOI: 10.1038/srep44763] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 02/13/2017] [Indexed: 11/09/2022] Open
Abstract
SnO2 nanocrystals 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 SnO2 nanocrystals with a surface modified by isolated V(IV) oxide species. After heat-treatment at 400 °C, the SnO2 nanocrystals were wrapped by layers composed of vanadium oxide (IV-V mixed oxidation state) and carbon residuals. After heating at 500 °C, only SnO2 cassiterite 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 10-7 M concentration, all RhB was degraded within 1 h of reaction, at a much faster rate than all pure SnO2 materials reported until now.
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Affiliation(s)
- Mauro Epifani
- Istituto per la Microelettronica e i Microsistemi, IMM-CNR, Via Monteroni, 73100 Lecce, Italy
| | - Saulius Kaciulis
- Istituto per lo Studio dei Materiali Nanostrutturati, ISMN-CNR, PO Box 10, 00015 Monterotondo Stazione, Roma, Italy
| | - Alessio Mezzi
- Istituto per lo Studio dei Materiali Nanostrutturati, ISMN-CNR, PO Box 10, 00015 Monterotondo Stazione, Roma, Italy
| | - Davide Altamura
- Istituto di Cristallografia, IC-CNR, Via Giovanni Amendola, 122/O, 70126 Bari, Italy
| | - Cinzia Giannini
- Istituto di Cristallografia, IC-CNR, Via Giovanni Amendola, 122/O, 70126 Bari, Italy
| | - Raül Díaz
- Electrochemical Processes Unit, IMDEA Energy Institute, Avda. Ramón de la Sagra, 3 28935 Móstoles, Spain
| | - Carmen Force
- NMR Unit, Centro de Apoyo Tecnológico, Universidad Rey Juan Carlos, c/Tulipán, s/n, 28933 Móstoles, Spain
| | - Aziz Genç
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Jordi Arbiol
- 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
| | - Pietro Siciliano
- Istituto per la Microelettronica e i Microsistemi, IMM-CNR, Via Monteroni, 73100 Lecce, Italy
| | - Elisabetta Comini
- Department of Information Engineering, Brescia University, Via Valotti 9, 25133 Brescia, Italy.,CNR-INO SENSOR Lab, Via Branze 45, 25123 Brescia, Italy
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Janke C, Radnik J, Bentrup U, Martin A, Brückner A. Ternary VZrAlON Oxynitrides - Efficient Catalysts for the Ammoxidation of 3-Picoline. ACS Catal 2014. [DOI: 10.1021/cs500458w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Jörg Radnik
- Leibniz Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, Rostock, 18059 Germany
| | - Ursula Bentrup
- Leibniz Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, Rostock, 18059 Germany
| | - Andreas Martin
- Leibniz Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, Rostock, 18059 Germany
| | - Angelika Brückner
- Leibniz Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, Rostock, 18059 Germany
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