Solvothermal, Chloroalkoxide-based Synthesis of Monoclinic WO3 Quantum Dots and Gas-Sensing Enhancement by Surface Oxygen Vacancies (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Solvothermal, Chloroalkoxide-based Synthesis of Monoclinic WO3 Quantum Dots and Gas-Sensing Enhancement by Surface Oxygen Vacancies (Articolo in rivista) (literal)

Anno

• 2014-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1021/am504158r (literal)

Alternative label

• Epifani, Mauro; Comini, Elisabetta; Diaz, Rauel; Andreu, Teresa; Genc, Aziz; Arbiol, Jordi; Siciliano, Pietro; Faglia, Guido; Morante, Joan R. (2014)
  Solvothermal, Chloroalkoxide-based Synthesis of Monoclinic WO3 Quantum Dots and Gas-Sensing Enhancement by Surface Oxygen Vacancies
  in ACS applied materials & interfaces (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Epifani, Mauro; Comini, Elisabetta; Diaz, Rauel; Andreu, Teresa; Genc, Aziz; Arbiol, Jordi; Siciliano, Pietro; Faglia, Guido; Morante, Joan R. (literal)

Pagina inizio

• 16808 (literal)

Pagina fine

• 16816 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 6 (literal)

Rivista

• ACS applied materials & interfaces (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 9 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 19 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Consiglio Nazionale delle Ricerche (CNR); University of Brescia; Consiglio Nazionale delle Ricerche (CNR); IMDEA Energy Inst; University of Barcelona; Consejo Superior de Investigaciones Cientificas (CSIC); Passeig Lluis Co; University of Barcelona (literal)

Titolo

• Solvothermal, Chloroalkoxide-based Synthesis of Monoclinic WO3 Quantum Dots and Gas-Sensing Enhancement by Surface Oxygen Vacancies (literal)

Abstract

• We report for the first time the synthesis of monoclinic WO3 quantum dots. A solvothermal processing at 250 degrees C in oleic acid of W chloroalkoxide solutions was employed. It was shown that the bulk monoclinic crystallographic phase is the stable one even for the nanosized regime (mean size 4 nm). The nanocrystals were characterized by X-ray diffraction, High resolution transmission electron microscopy, X-ray photoelectron spectroscopy, UV-vis, Fourier transform infrared and Raman spectroscopy. It was concluded that they were constituted by a core of monoclinic WO3, surface covered by unstable W(V) species, slowly oxidized upon standing in room conditions. The WO3 nanocrystals could be easily processed to prepare gas-sensing devices, without any phase transition up to at least 500 degrees C. The devices displayed remarkable response to both oxidizing (nitrogen dioxide) and reducing (ethanol) gases in concentrations ranging from 1 to 5 ppm and from 100 to 500 ppm, at low operating temperatures of 100 and 200 degrees C, respectively. The analysis of the electrical data showed that the nanocrystals were characterized by reduced surfaces, which enhanced both nitrogen dioxide adsorption and oxygen ionosorption, the latter resulting in enhanced ethanol decomposition kinetics. (literal)

Prodotto di

• Institute for microelectronics and microsystems (IMM) (Istituto)

Autore CNR

• MAURO SALVATORE EPIFANI (Unità di personale interno)
• GUIDO FAGLIA (Unità di personale esterno)
• PIETRO ALEARDO SICILIANO (Unità di personale interno)
• ELISABETTA COMINI (Unità di personale esterno)

Insieme di parole chiave

• Parole chiave di "Solvothermal, Chloroalkoxide-based Synthesis of Monoclinic WO3 Quantum Dots and Gas-Sensing Enhancement by Surface Oxygen Vacancies" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute for microelectronics and microsystems (IMM) (Istituto)

Autore CNR di

• GUIDO FAGLIA (Unità di personale esterno)
• PIETRO ALEARDO SICILIANO (Unità di personale interno)
• MAURO SALVATORE EPIFANI (Unità di personale interno)
• ELISABETTA COMINI (Unità di personale esterno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• ACS applied materials & interfaces (Rivista)

Insieme di parole chiave di

• Parole chiave di "Solvothermal, Chloroalkoxide-based Synthesis of Monoclinic WO3 Quantum Dots and Gas-Sensing Enhancement by Surface Oxygen Vacancies" (Insieme di parole chiave)