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dc.contributor.author
Aronne, Antonio
dc.contributor.author
Fantauzzi, Marzia
dc.contributor.author
Imparato, Claudio
dc.contributor.author
Atzei, Davide
dc.contributor.author
De Stefano, Luca
dc.contributor.author
D'Errico, Gerardino
dc.contributor.author
Sannino, Filomena
dc.contributor.author
Rea, Ilaria
dc.contributor.author
Pirozzi, Domenico
dc.contributor.author
Elsener, Bernhard
dc.contributor.author
Pernice, Pasquale
dc.contributor.author
Rossi, Aldo-Ricardo
dc.date.accessioned
2018-02-16T13:01:52Z
dc.date.available
2018-01-12T10:12:55Z
dc.date.available
2018-02-16T12:57:04Z
dc.date.available
2017-06-12T19:34:37Z
dc.date.available
2018-02-16T13:01:52Z
dc.date.issued
2017
dc.identifier.issn
2046-2069
dc.identifier.other
10.1039/c6ra27111a
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/242228
dc.identifier.doi
10.3929/ethz-b-000128139
dc.description.abstract
Factors tuning the functional performances of the various TiO2-based materials in the wide range of their possible applications are poorly understood. Here the electronic structure of TiO2-based materials characterized by Ti3+ self-doping, obtained by a sol–gel route wholly performed in air at room temperature, is reported. In the amorphous hybrid TiO2–acetylacetonate (HSGT) material the formation of the Ti(IV)–acac complex makes it photoresponsive to visible light and allows us to obtain by means of a simple annealing in air at 400 °C a very stable black Ti3+ self-doped anatase TiO2 nanomaterial (HSGT-400), characterized by an extraordinary high concentration of Ti atoms with oxidation states lower than IV (about 26%), which absorbs light in the entire visible range. The very high stability of HSGT-400 is mainly related to the process, which does not require the use of harsh conditions nor external reducing agents. The electronic structure of HSGT, owing to the presence of the Ti(IV)–acac complex, allows the stabilization of superoxide anion radicals on its surface for a very long time (months) at room temperature. The extraordinary low recombination rate of electron–hole pairs gives to HSGT unusual catalytic performances at room temperature allowing the complete removal of 2,4-dichlorophenol from water in about one hour without any light irradiation. Our results clearly highlight the connection among the production process of TiO2-based materials, their electronic structure and, finally, their functional behaviour.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Royal Society of Chemistry
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc/3.0/
dc.title
Electronic properties of TiO2-based materials characterized by high Ti3+ self-doping and low recombination rate of electron-hole pairs
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial 3.0 Unported
dc.date.published
2017-01-12
ethz.journal.title
RSC Advances
ethz.journal.volume
7
en_US
ethz.journal.issue
4
en_US
ethz.pages.start
2373
en_US
ethz.pages.end
2381
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.identifier.nebis
006752154
ethz.publication.place
London
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02606 - Institut für Baustoffe (IfB) / Institute for Building Materials
en_US
ethz.date.deposited
2017-06-12T19:34:51Z
ethz.source
FORM
ethz.source
ECIT
ethz.identifier.importid
imp5936553b3d57e15834
ethz.ecitpid
pub:191044
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2018-02-20T09:59:50Z
ethz.rosetta.lastUpdated
2019-01-02T12:01:44Z
ethz.rosetta.versionExported
true
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/227935
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/128139
ethz.COinS
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