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Título: | Highly photoactive anatase nanoparticles obtained using trifluoroacetic acid as an electron scavenger and morphological control agent |
Autor: | Calatayud, David G. CSIC ORCID ; Jardiel, Teresa CSIC ORCID ; Peiteado, Marco CSIC ORCID ; Palomares, F. Javier CSIC ORCID; Rubio Alonso, Fausto CSIC ORCID ; Fernández Hevia, D.; Caballero Cuesta, Amador CSIC ORCID | Fecha de publicación: | 2013 | Editor: | Royal Society of Chemistry (UK) | Citación: | Journal of Materials Chemistry A 1(45): 14358-14367 (2013) | Resumen: | Fluorine species adsorbed on the surface of TiO2 anatase nanoparticles improve their photocatalytic performance by reducing the recombination rate of photogenerated electrons and holes. Trifluoroacetic acid (TFAA) has been recently proposed as a promising harmless substitute for hydrofluoric acid (HF) in preparing fluorine-modified anatase with good scavenger properties. However the photocatalytic performance of the TiO 2 nanoparticles also depends on their specific morphology, by which the number and type of crystal facets, which remain exposed, are determined. A comprehensive study is presented in this contribution which for the first time describes the role of TFAA in stabilizing the highly photoactive {001} TiO 2 facets. Furthermore, by reducing the amount of water incorporated into the reaction medium, a simple one-step synthesis method is also proposed that allows the preparation of TFAA-modified anatase nanoparticles with specific morphology and selected stabilized facets, eventually yielding a semiconductor material with excellent photocatalytic properties. © 2013 The Royal Society of Chemistry. | Versión del editor: | https://doi.org/10.1039/C3TA12970E | URI: | http://hdl.handle.net/10261/94362 | DOI: | 10.1039/c3ta12970e | Identificadores: | issn: 2050-7488 e-issn: 2050-7496 |
Aparece en las colecciones: | (ICV) Artículos (ICMM) Artículos |
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CAlatayud_Highly_Journal_Materials_Chemistry_A_2013_proof.pdf | Preprint | 1,27 MB | Adobe PDF | Visualizar/Abrir |
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