Artículo
Synthesis, characterization and photocatalytic activity of 1D TiO2 nanostructures
Cabrera, Julieta; Alarcón Cavero, Hugo Arturo; López, Alcides; Candal, Roberto Jorge
; Acosta, Dwight; Rodríguez, Juan
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Fecha de publicación:
01/2014
Editorial:
IWA Publishing
Revista:
Water Science And Technology
ISSN:
0273-1223
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Nanowire/nanorod TiO2 structures of approximately 8 nm in diameter and around 1,000 nm long were synthesized by alkaline hydrothermal treatment of two different TiO2 nanopowders. The first precursor was TiO2 obtained by the sol-gel process (SG-TiO2); the second was the well-known commercial TiO2 P-25 (P25-TiO2). Anatase-like 1D TiO2 nanostructures were obtained in both cases. The one-dimensional (1D) nanostructures synthesized from SG-TiO2 powders turned into rod-like nanostructures after annealing at 400 °C for 2 h. Conversely, the nanostructures synthesized from P25-TiO2 preserved the tubular structure after annealing, displaying a higher Brunauer–Emmett–Teller surface area than the first system (279 and 97 m2/g, respectively). Despite the higher surface area shown by the 1D nanostructures, in both cases the photocatalytic activity was lower than for the P25-TiO2 powder. However, the rod-like nanostructures obtained from SG-TiO2 displayed slightly higher efficiency than the sol-gel prepared powders. The lower photocatalytic activity of the nanostructures with respect to P-25 can be associated with the lower crystallinity of 1D TiO2 in both materials.
Palabras clave:
1d Tio2 Nanostructures
,
Hydrothermal Treatment
,
Photocatalytic Activity
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Articulos(INQUIMAE)
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Citación
Cabrera, Julieta; Alarcón Cavero, Hugo Arturo; López, Alcides; Candal, Roberto Jorge; Acosta, Dwight; et al.; Synthesis, characterization and photocatalytic activity of 1D TiO2 nanostructures; IWA Publishing; Water Science And Technology; 70; 6; 1-2014; 972-979
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