Hybrid Amino Acid-TiO2 Materials with Tuneable Crystalline Structure and Morphology for Photocatalytic Applications
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Título: | Hybrid Amino Acid-TiO2 Materials with Tuneable Crystalline Structure and Morphology for Photocatalytic Applications |
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Autor/es: | Sarigul, Gamze | Chamorro-Mena, Ignacio | Linares, Noemi | Garcia-Martinez, Javier | Serrano, Elena |
Grupo/s de investigación o GITE: | Laboratorio de Nanotecnología Molecular (NANOMOL) |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica |
Palabras clave: | Environmental remediation | Hybrid TiO2 | L-tyrosine | Photocatalysts | Sol-gel synthesis |
Área/s de conocimiento: | Química Inorgánica |
Fecha de publicación: | 15-jul-2021 |
Editor: | Wiley-VCH GmbH |
Cita bibliográfica: | Advanced Sustainable Systems. 2021, 5(10): 2100076. https://doi.org/10.1002/adsu.202100076 |
Resumen: | A method to produce hybrid organotitanias, both as thin films and suspensions, showing excellent photocatalyic activity in the degradation of organic dyes in aqueous solutions under visible light irradiation is disclosed. This method is based on the in situ incorporation of an amino acid, l-tyrosine, during the synthesis of the titanias owing to its coordination and co-condensation with the titania precursor under acidic conditions. This methodology allows the fine -tuning of their crystalline structure, size, and shape by simply varying the pH of the synthesis gel, leading to anatase nanoparticles of ≈5 nm and surface areas of ≈200 m2 g−1 at pH = 2.2, while highly crystalline rutile nanorods are formed at pH = 0. The incorporation of l-tyrosine to both anatase nanoparticles and rutile nanorods enables these materials to absorb light in the visible range due to both the decrease in their band gap, as compared to the reference materials, and the presence of additional absorption edges at wavelengths higher than 400 nm. Consequently, the photocatalytic activity of both hybrid anatase nanoparticles and rutile nanorods exhibits a 120% enhanced photocatalytic efficiency, as compared to that of l-Tyr-free titanias and the commercial P25, which confirms their potential application in water remediation. |
Patrocinador/es: | This work was supported by the Ministerio de Ciencia en Innovación of Spain (MICINN) and Agencia Estatal de Investigación (AEI)/European Regional Development Fund (FEDER) (projects CTQ2015-74494-JIN and RTI2018-099504-B-C21/A-C22). N.L. and E.S. also thank the Universidad de Alicante (Spain) through the “Programa de Retención de Talento” (ref. UATALENTO16-03 and 17-05, respectively). |
URI: | http://hdl.handle.net/10045/116602 |
ISSN: | 2366-7486 |
DOI: | 10.1002/adsu.202100076 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2021 The Authors. Advanced Sustainable Systems published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1002/adsu.202100076 |
Aparece en las colecciones: | INV - NANOMOL - Artículos de Revistas |
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