Artículo
Anchoring lead-free halide Cs3Bi2I9 perovskite on UV100–TiO2 for enhanced photocatalytic performance
Bresolin, Bianca Maria; Balayeva, Narmina O.; Granone, Luis Ignacio
; 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:
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
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(PLAPIQUI)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
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
Compartir
Altmétricas
Estadísticas
Visualizaciones:
37
Descargas: 0
Descargas: 0