Nonhydrolytic Route to Boron-Doped TiO2 Nanocrystals (Articolo in rivista)

Type
Label
  • Nonhydrolytic Route to Boron-Doped TiO2 Nanocrystals (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/ejic.201200842 (literal)
Alternative label
  • Hua Xu, Rosaria Anna Picca, Luisa De Marco, Claudia Carlucci, Angela Scrascia, Paride Papadia, Barbara Federica Scremin, Elvio Carlino, Cinzia Giannini, Cosimino Malitesta, Marco Mazzeo, Giuseppe Gigli, Giuseppe Ciccarella (2012)
    Nonhydrolytic Route to Boron-Doped TiO2 Nanocrystals
    in European journal of inorganic chemistry (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Hua Xu, Rosaria Anna Picca, Luisa De Marco, Claudia Carlucci, Angela Scrascia, Paride Papadia, Barbara Federica Scremin, Elvio Carlino, Cinzia Giannini, Cosimino Malitesta, Marco Mazzeo, Giuseppe Gigli, Giuseppe Ciccarella (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto Nanoscienze-CNR, National Nanotechnology Laboratory (NNL), via Arnesano, 73100 Lecce, Italy Dipartimento di Scienza dei Materiali, Università del Salento, via Monteroni, 73100 Lecce, Italy Center for Biomolecular Nanotechnologies (CBN) of Italian Institute of Technology (IIT), via Barsanti 1, 73010 Arnesano (LE), Italy Dipartimento di Ingegneria dell'Innovazione, Università del Salento, via Monteroni, 73100 Lecce, Italy Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, via Monteroni, 73100 Lecce, Italy DMD-CNR, Dipartimento Materiali e Dispositivi del CNR, corso Perrone 24, 16152 Genova, Italy IOM-CNR Laboratorio TASC, Area Science Park Basovizza, Bld MM, SS 14, Km 163.5, 34149 Trieste, Italy IC-CNR, via Giovanni Amendola, 122/O, 70126 Bari, Italy Dipartimento di Matematica e Fisica \"Ennio De Giorgi\", Università del Salento, Via Monteroni, 73100 Lecce, Italy (literal)
Titolo
  • Nonhydrolytic Route to Boron-Doped TiO2 Nanocrystals (literal)
Abstract
  • A simple synthesis was applied and tested for the preparation of boron-doped titanium dioxide [TiO2(B)] nanocrystals using titanium tetraisopropoxide (TTIP) together with boric acid (H3BO3) and benzyl alcohol as reaction solvent. Changes in the TTIP/H3BO3 molar ratio allowed a scalable synthetic protocol with a significant B-dopant control. In particular, this approach does not need surfactants or a final calcination step. X-ray diffractometry (XRD), low- and high-resolution transmission electron microscopy (TEM and HRTEM), and micro Raman spectroscopy revealed that the TiO2 nanocrystals produced have diameters up to about 10 nm and are mainly of the anatase phase but that a brookite phase was progressively formed with increased dopantlevel. The amount of boron was measured by inductively coupled plasma atomic emission spectroscopy (ICP-AES), and the presence of boron inside the crystals was determined by 11B cross-polarized magic-angle spinning nuclear magnetic resonance (11B CP-MAS NMR) spectroscopy. X-ray photoelectron spectroscopy (XPS) revealed the presence of boron on the nanocrystal surfaces, confirming the trend in the dopant concentration already observed with ICP-AES elemental analysis. Microphotoluminescence studies indicated the formation of three different typical luminescent defect states in correlation with the amount of added boron in the titania. UV/Vis absorption spectra showed a boron-dependent redshift of the absorption edge. (literal)
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