Shape-Controlled Synthesis of Cu3TeO6 Nanoparticles with Photocatalytic Features
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Título: | Shape-Controlled Synthesis of Cu3TeO6 Nanoparticles with Photocatalytic Features |
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Autor/es: | Fernández-Catalá, Javier | Jussila, Laura | Daboczi, Matyas | Temerov, Filipp | Eslava, Salvador | Greco, Rossella | Cao, Wei |
Grupo/s de investigación o GITE: | Materiales Carbonosos y Medio Ambiente |
Centro, Departamento o Servicio: | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Shape-controlled synthesis | Cu3TeO6 | Nanoparticles | Photocatalytic features |
Fecha de publicación: | 7-nov-2023 |
Editor: | American Chemical Society |
Cita bibliográfica: | Crystal Growth & Design. 2023, 23(12): 8828-8837. https://doi.org/10.1021/acs.cgd.3c00929 |
Resumen: | Cu3TeO6 (CTO) has been synthesized by hydrothermal synthesis applying different pH values without any template or a calcination step to control the crystalline phase and the morphology of nanoparticles. The physicochemical properties characterized by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, N2 adsorption, X-ray photoelectron spectroscopy, and diffuse reflectance ultraviolet–visible (DRUV–vis) spectroscopy techniques revealed that the pH values significantly influence the crystal growth. In acidic media (pH = 2), crystal growth has not been achieved. At pH = 4, the yield is low (10%), and the CTO presents irregular morphology. At pH = 6, the yield increases (up to 71%) obtaining an agglomeration of nanoparticles into spherical morphology. At basic conditions (pH = 8), the yield increases up to 90% and the morphology is the same as the sample obtained at pH = 6. At high basic conditions (pH = 10), the yield is similar (92%), although the morphology changes totally to dispersed nanoparticles. Importantly, the as-prepared CTO semiconductor presents photocatalytic activity for H2 production using triethanolamine as a sacrificial agent under visible light illumination. The results also revealed that the nanoparticles agglomerated in a spherical morphology with larger surface area presented almost double activities in H2 production compared to heterogeneously sized particles. These results highlight the suitable optoelectronic properties, including optical band gap, energy levels, and photoconductivity of CTO semiconductors for their use in photocatalytic H2 production. |
Patrocinador/es: | JFC thanks MARSALAS21-09 grant funded by MCIN/AEI/10.13039/501100011033 and European Union NextGeneration EU/PRTR. S.E. and M.D. thank the EPSRC grant EP/S030727/1 for financial support. Financial support from the ERC (European Research Council) Consolidator Grant CATCH (grant agreement no 101002219) is also acknowledged. |
URI: | http://hdl.handle.net/10045/138300 |
ISSN: | 1528-7483 (Print) | 1528-7505 (Online) |
DOI: | 10.1021/acs.cgd.3c00929 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2023 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY 4.0. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1021/acs.cgd.3c00929 |
Aparece en las colecciones: | INV - MCMA - Artículos de Revistas Investigaciones financiadas por la UE |
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Archivo | Descripción | Tamaño | Formato | |
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Fernandez-Catala_etal_2023_CrystGrowthDes.pdf | 8,81 MB | Adobe PDF | Abrir Vista previa | |
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