ZnS-doped TiO2 photocatalysts for 4-chlorophenol photodegradation in water

M. E. Velásquez-Torres; F. Tzompantzi; J. C. Castillo-Rodríguez; H. Sierra-Uribe; C. E. Santolalla-Vargas; J. Cardoso-Martínez

doi:10.1557/s43580-022-00439-4

ZnS-doped TiO₂ photocatalysts for 4-chlorophenol photodegradation in water

M. E. Velásquez-Torres, F. Tzompantzi, J. C. Castillo-Rodríguez, H. Sierra-Uribe, C. E. Santolalla-Vargas, J. Cardoso-Martínez

Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD)

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

Resumen

The TiO₂-X% ZnS photocatalysts, where X represents the molar percentage of ZnS (3%, 5%, 10%, and 15%), were synthesized using the one-step sol–gel method. In a Batch-type reactor, under the irradiation of a mercury lamp (λ = 254 nm, Pen-Ray), degradations of 55 ppm 4-chlorophenol were obtained at 400 min with the synthesized photocatalysts: 90% (TiO₂), 60% (3% ZnS), 66% (5% ZnS), 74% (10% ZnS), and 58% (15% ZnS). ZnS addition in the photocatalysts inhibits a good performance, being the support, TiO₂, the most photoactive material when irradiating in the ultraviolet region. TiO₂ showed suppression of hole electron pair recombination and high electron storage, outstanding separation, and transfer. Graphical abstract: [Figure not available: see fulltext.].

Idioma original	Inglés
Páginas (desde-hasta)	1189-1192
Número de páginas	4
Publicación	MRS Advances
Volumen	7
N.º	35
DOI	https://doi.org/10.1557/s43580-022-00439-4
Estado	Publicada - dic. 2022

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abstract = "The TiO2-X% ZnS photocatalysts, where X represents the molar percentage of ZnS (3%, 5%, 10%, and 15%), were synthesized using the one-step sol–gel method. In a Batch-type reactor, under the irradiation of a mercury lamp (λ = 254 nm, Pen-Ray), degradations of 55 ppm 4-chlorophenol were obtained at 400 min with the synthesized photocatalysts: 90% (TiO2), 60% (3% ZnS), 66% (5% ZnS), 74% (10% ZnS), and 58% (15% ZnS). ZnS addition in the photocatalysts inhibits a good performance, being the support, TiO2, the most photoactive material when irradiating in the ultraviolet region. TiO2 showed suppression of hole electron pair recombination and high electron storage, outstanding separation, and transfer. Graphical abstract: [Figure not available: see fulltext.].",

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AU - Velásquez-Torres, M. E.

AU - Tzompantzi, F.

AU - Castillo-Rodríguez, J. C.

AU - Sierra-Uribe, H.

AU - Santolalla-Vargas, C. E.

AU - Cardoso-Martínez, J.

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N2 - The TiO2-X% ZnS photocatalysts, where X represents the molar percentage of ZnS (3%, 5%, 10%, and 15%), were synthesized using the one-step sol–gel method. In a Batch-type reactor, under the irradiation of a mercury lamp (λ = 254 nm, Pen-Ray), degradations of 55 ppm 4-chlorophenol were obtained at 400 min with the synthesized photocatalysts: 90% (TiO2), 60% (3% ZnS), 66% (5% ZnS), 74% (10% ZnS), and 58% (15% ZnS). ZnS addition in the photocatalysts inhibits a good performance, being the support, TiO2, the most photoactive material when irradiating in the ultraviolet region. TiO2 showed suppression of hole electron pair recombination and high electron storage, outstanding separation, and transfer. Graphical abstract: [Figure not available: see fulltext.].

AB - The TiO2-X% ZnS photocatalysts, where X represents the molar percentage of ZnS (3%, 5%, 10%, and 15%), were synthesized using the one-step sol–gel method. In a Batch-type reactor, under the irradiation of a mercury lamp (λ = 254 nm, Pen-Ray), degradations of 55 ppm 4-chlorophenol were obtained at 400 min with the synthesized photocatalysts: 90% (TiO2), 60% (3% ZnS), 66% (5% ZnS), 74% (10% ZnS), and 58% (15% ZnS). ZnS addition in the photocatalysts inhibits a good performance, being the support, TiO2, the most photoactive material when irradiating in the ultraviolet region. TiO2 showed suppression of hole electron pair recombination and high electron storage, outstanding separation, and transfer. Graphical abstract: [Figure not available: see fulltext.].

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