Inorganic chemistry in a nanoreactor: Au/TiO2 nanocomposites by photolysis of a single-source precursor in miniemulsion (Articolo in rivista)

Type

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

Label

• Inorganic chemistry in a nanoreactor: Au/TiO2 nanocomposites by photolysis of a single-source precursor in miniemulsion (Articolo in rivista) (literal)

Anno

• 2013-01-01T00:00:00+01:00 (literal)

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

• 10.1039/c3nr03977c (literal)

Alternative label

• Heutz Niels A.; Dolcet P.; Birkner A.; Casarin M.; Merz K.; Gialanella S.; Gross S. (2013)
  Inorganic chemistry in a nanoreactor: Au/TiO2 nanocomposites by photolysis of a single-source precursor in miniemulsion
  in Nanoscale (Print)
  (literal)

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

• Heutz Niels A.; Dolcet P.; Birkner A.; Casarin M.; Merz K.; Gialanella S.; Gross S. (literal)

Pagina inizio

• 10534 (literal)

Pagina fine

• 10541 (literal)

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

• http://pubs.rsc.org/en/Content/ArticleLanding/2013/NR/c3nr03977c#!divAbstract (literal)

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

• 5 (literal)

Rivista

• Nanoscale (Rivista)

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

• 8 (literal)

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

• 21 (literal)

Note

• ISI Web of Science (WOS) (literal)
• Scopu (literal)

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

• 1,5 : Lehrstuhl für Anorganische Chemie i, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Universitätsstr. 150, D-44801 Bochum, Germany / 2,4 : Dipartimento di Scienze Chimiche, University of Padova, INSTM, Via Marzolo, 1, I-35131, Padova, Italy / 3 : Lehrstuhl für Physikalische Chemie i, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Universitätsstr. 150, D-44801 Bochum, Germany / 6 : Dipartimento di Ingegneria Industriale, University of Trento, Via Mesiano 77, 38123 Trento, Italy / 7 : Istituto per l'Energetica e le Interfasi, Dipartimento di Scienze Chimiche, Università Degli Studi di Padova, Via Marzolo, 1, I-35131, Padova, Italy (literal)

Titolo

• Inorganic chemistry in a nanoreactor: Au/TiO2 nanocomposites by photolysis of a single-source precursor in miniemulsion (literal)

Abstract

• An original synthetic route, based on the combination of a single-source precursor, UV-photodegradation and inverse w/o miniemulsion, is used to prepare Au nanoparticles (NPs) dispersed on titania. The source of the nanocomposite materials is the photolabile single-source precursor AuCl4(NH4) 7[Ti-2(O-2)(2)(cit)(Hcit)](2).12H(2)O, which is suspended in a w/o miniemulsion consisting of different surfactant/hydrocarbon/water formulations (surfactant: sodium dodecylsulfate (SDS) or Triton X-100) and subsequently irradiated with a UV lamp to promote its decomposition in the confined space of the droplets. Gold NPs that form at room temperature are found to be crystalline, while titanium dioxide occurs as an amorphous phase. Moreover, the average crystallite size of gold NPs ranges between 20 and 24 nm when using SDS and between 26 and 40 nm in the case of Triton X-100, after 4 and 8 hours of irradiation time, respectively. Scanning and transmission electron microscopies (SEM and TEM) are used to get information about the nanocomposite morphology and nanostructure, revealing that gold NPs are uniformly distributed on the titanium oxide surface. Furthermore, X-ray photoelectron spectroscopy (XPS) outcomes, besides confirming the formation of both metallic gold and titania, provide information about the high dispersion of Au NPs on the TiO2 surface. In fact, the Au : Ti atomic ratio is found to be 0.45-1.5 (1 : 2-1.5 : 1), which is higher than the value determined by starting from the precursor stoichiometry (0.25). Catalytic testing in the oxidation of 2-propanol shows that decomposition of the precursor in a miniemulsion provides a nanocomposite with enhanced activity compared to the decomposition in the aqueous phase. (literal)

Prodotto di

• Modelli e metodologie per lo studio di molecole e nanosistemi organizzati per la produzione ed immagazzinamento di energia (PM.P07.010.011) (Modulo)
• Institute of Condensed Matter Chemistry and Energy Technologies (ICMATE) (Istituto)
• Progettazione molecolare di nanosistemi organizzati (PM.P05.007.001) (Modulo)

Autore CNR

• PAOLO DOLCET (Persona)
• SILVIA GROSS (Unità di personale interno)

Insieme di parole chiave

• Keywords of "Inorganic chemistry in a nanoreactor: Au/TiO2 nanocomposites by photolysis of a single-source precursor in miniemulsion" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• SILVIA GROSS (Unità di personale interno)
• PAOLO DOLCET (Persona)

Prodotto

• Institute of Condensed Matter Chemistry and Energy Technologies (ICMATE) (Istituto)
• Modelli e metodologie per lo studio di molecole e nanosistemi organizzati per la produzione ed immagazzinamento di energia (PM.P07.010.011) (Modulo)
• Progettazione molecolare di nanosistemi organizzati (PM.P05.007.001) (Modulo)

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

• Nanoscale (Rivista)

Insieme di parole chiave di

• Keywords of "Inorganic chemistry in a nanoreactor: Au/TiO2 nanocomposites by photolysis of a single-source precursor in miniemulsion" (Insieme di parole chiave)