V-doped TiO2 photocatalysts and their application to pollutant degradation

V-doped TiO2 materials (0.01, 0.05, 0.10, and 1.00 nominal atomic %) were synthesized by the sol-gel method and characterized by X-ray diffraction, Raman spectroscopy, UV–visible diffuse reflectance spectroscopy, N2 adsorption–desorption isotherms, X-ray photoelectron spectroscopy, and H2-temperatur...

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Autores principales:	Rossi, Lucía, Palacio, Magdalena, Villabrille, Paula Isabel, Rosso, Janina Alejandra
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2021
Materias:	Química Vanadyl acetylacetonate Ammonium metavanadate Phenol 4-chlorophenol 4-nitrophenol Aldrich humic acid
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/141186
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-141186
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Química Vanadyl acetylacetonate Ammonium metavanadate Phenol 4-chlorophenol 4-nitrophenol Aldrich humic acid
spellingShingle	Química Vanadyl acetylacetonate Ammonium metavanadate Phenol 4-chlorophenol 4-nitrophenol Aldrich humic acid Rossi, Lucía Palacio, Magdalena Villabrille, Paula Isabel Rosso, Janina Alejandra V-doped TiO2 photocatalysts and their application to pollutant degradation
topic_facet	Química Vanadyl acetylacetonate Ammonium metavanadate Phenol 4-chlorophenol 4-nitrophenol Aldrich humic acid
description	V-doped TiO2 materials (0.01, 0.05, 0.10, and 1.00 nominal atomic %) were synthesized by the sol-gel method and characterized by X-ray diffraction, Raman spectroscopy, UV–visible diffuse reflectance spectroscopy, N2 adsorption–desorption isotherms, X-ray photoelectron spectroscopy, and H2-temperature programmed reduction. Two vanadium precursors (vanadyl acetylacetonate and ammonium metavanadate) and three calcination temperatures (400, 500, and 600 °C, with and without air circulation) were assayed. The efficiency of the materials as photocatalysts was studied by the degradation of phenol with UV and visible lamps. The photocatalyst prepared from vanadium acetylacetonate, with a vanadium content of 0.01 nominal atomic %, calcination at 400 °C without air circulation (0.01VTi-400), showed the best performance, reaching 100% and 30% degradation of phenol (50 μM) by irradiation with UV lamps (3 h) and visible lamps (5 h), respectively. To evaluate the efficiency of this catalyst in the degradation of other structurally related compounds, two substituted phenols were selected: 4-chlorophenol and 4-nitrophenol. The 0.01VTi-400 photocatalyst showed to be applicable to the degradation of phenolic compounds when the substituent was an activating group or a weakly deactivating group (for electrophilic reactions). Additionally, the selectivity of 0.01VTi-400 for phenol degradation in the presence of Aldrich humic acid was tested: phenol degradation reached 68% (3 h, UV lamps). The performance of 0.01VTi-400 indicated that it is a promising material for further applications.
format	Articulo Articulo
author	Rossi, Lucía Palacio, Magdalena Villabrille, Paula Isabel Rosso, Janina Alejandra
author_facet	Rossi, Lucía Palacio, Magdalena Villabrille, Paula Isabel Rosso, Janina Alejandra
author_sort	Rossi, Lucía
title	V-doped TiO2 photocatalysts and their application to pollutant degradation
title_short	V-doped TiO2 photocatalysts and their application to pollutant degradation
title_full	V-doped TiO2 photocatalysts and their application to pollutant degradation
title_fullStr	V-doped TiO2 photocatalysts and their application to pollutant degradation
title_full_unstemmed	V-doped TiO2 photocatalysts and their application to pollutant degradation
title_sort	v-doped tio2 photocatalysts and their application to pollutant degradation
publishDate	2021
url	http://sedici.unlp.edu.ar/handle/10915/141186
work_keys_str_mv	AT rossilucia vdopedtio2photocatalystsandtheirapplicationtopollutantdegradation AT palaciomagdalena vdopedtio2photocatalystsandtheirapplicationtopollutantdegradation AT villabrillepaulaisabel vdopedtio2photocatalystsandtheirapplicationtopollutantdegradation AT rossojaninaalejandra vdopedtio2photocatalystsandtheirapplicationtopollutantdegradation
bdutipo_str	Repositorios
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V-doped TiO2 photocatalysts and their application to pollutant degradation

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