Photocatalytic hydrogen production by biomimetic indium sulfide using Mimosa pudica leaves as template

Carrasco Jaim, Omar A. y Ahumada Lazo, Rubén y Clark, Pip C.J. y Gómez Solís, Christian y Fairclough, Simon M. y Haigh, Sarah J. y Leontiadou, Marina A. y Handrup, Karsten y Torres Martínez, Leticia M. y Flavell, Wendy R. (2019) Photocatalytic hydrogen production by biomimetic indium sulfide using Mimosa pudica leaves as template. International Journal of Hydrogen Energy, 44 (5). pp. 2770-2783. ISSN 0360-3199

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Resumen

Biomimetic sulfur-deficient indium sulfide (In2.77S4) was synthesized by a template-assisted hydrothermal method using leaves of Mimosa pudica as a template for the first time. The effect of this template in modifying the morphology of the semiconductor particles was determined by physicochemical characterization, revealing an increase in surface area, decrease in microsphere size and pore size and an increase in pore volume density in samples synthesized with the template. X-ray photoelectron spectroscopy (XPS) analysis showed the presence of organic sulfur (Ssingle bondO/Ssingle bondC/Ssingle bondH) and sulfur oxide species (single bondSO2, SO32−, SO42−) at the surface of the indium sulfide in samples synthesized with the template. Biomimetic indium sulfide also showed significant amounts of Fe introduced as a contaminant present on the Mimosa pudica leaves. The presence of these sulfur and iron species favors the photocatalytic activity for hydrogen production by their acting as a sacrificial reagent and promoting water oxidation on the surface of the templated particles, respectively. The photocatalytic hydrogen production rates over optimally-prepared biomimetic indium sulfide and indium sulfide synthesized without the organic template were 73 and 22 μmol g−1, respectively, indicating an improvement by a factor of three in the templated sample.

Tipo de elemento: Article
Palabras claves no controlados: In2.77S4, Template-assisted hydrothermal, Photocatalytic hydrogen production, XPS analysis
Materias: T Tecnología > TP Tecnología Química
Divisiones: Ingeniería Civil
Usuario depositante: Editor Repositorio
Creadores:
CreadorEmailORCID
Carrasco Jaim, Omar A.NO ESPECIFICADONO ESPECIFICADO
Ahumada Lazo, RubénNO ESPECIFICADONO ESPECIFICADO
Clark, Pip C.J.NO ESPECIFICADONO ESPECIFICADO
Gómez Solís, ChristianNO ESPECIFICADONO ESPECIFICADO
Fairclough, Simon M.NO ESPECIFICADONO ESPECIFICADO
Haigh, Sarah J.NO ESPECIFICADONO ESPECIFICADO
Leontiadou, Marina A.NO ESPECIFICADONO ESPECIFICADO
Handrup, KarstenNO ESPECIFICADONO ESPECIFICADO
Torres Martínez, Leticia M.NO ESPECIFICADONO ESPECIFICADO
Flavell, Wendy R.NO ESPECIFICADONO ESPECIFICADO
Fecha del depósito: 21 Oct 2020 03:14
Última modificación: 28 Oct 2020 03:14
URI: http://eprints.uanl.mx/id/eprint/20151

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