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Artículo

Anchoring lead-free halide Cs3Bi2I9 perovskite on UV100–TiO2 for enhanced photocatalytic performance

Bresolin, Bianca Maria; Balayeva, Narmina O.; Granone, Luis IgnacioIcon ; Dillert, Ralf; Bahnemann, Detlef W.; Sillanpää, Mika
Fecha de publicación: 01/2020
Editorial: Elsevier Science
Revista: Solar Energy Materials And Solar Cells
ISSN: 0927-0248
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Nano-materiales; Físico-Química, Ciencia de los Polímeros, Electroquímica

Resumen

Halide perovskites have shown great potential in photocatalytic applications. In order to enhance the charge transportation efficiency, the chemical stability, and the light absorption ability, we anchored a lead-free halide perovskite (Cs3Bi2I9) on UV100–TiO2 nanoparticles to build a visible-light active photocatalysts. The as-prepared material exhibited excellent stability and a remarkable yield for photocatalytic oxidation of methanol to formaldehyde under visible light irradiation. The photocatalyst was characterized using X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, Transmission electron microscopy, X-ray photoelectron spectroscopy, ultraviolet–visible diffuse reflectance spectroscopy, Brunauer–Emmett–Teller surface area measurement, and photoelectrochemical properties. The analyses confirmed a remarkable improvement of visible-light absorption, a favorable decrease in the recombination of photoinduced charge carriers, and a suitable bandgap for visible-light photocatalytic applications. Recycle experiments showed that the composites still presented significant photocatalytic activity after three successive cycles. A possible underlying mechanism of the composite accounting for the enhanced photocatalytic activity under visible light irradiation was proposed. Our study aims to open new possibilities of using lead-free halide perovskites for photocatalytic applications.
Palabras clave: HETEROSTRUCTURE , PEROVSKITE , PHOTOCATALYSIS , TITANIUM DIOXIDE , VISIBLE LIGHT
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/126781
DOI: http://dx.doi.org/10.1016/j.solmat.2019.110214
URL: https://www.sciencedirect.com/science/article/abs/pii/S0927024819305434?via%3Dih
Colecciones
Articulos(PLAPIQUI)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Citación
Bresolin, Bianca Maria; Balayeva, Narmina O.; Granone, Luis Ignacio; Dillert, Ralf; Bahnemann, Detlef W.; et al.; Anchoring lead-free halide Cs3Bi2I9 perovskite on UV100–TiO2 for enhanced photocatalytic performance; Elsevier Science; Solar Energy Materials And Solar Cells; 204; 110214; 1-2020; 1-11
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