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

Bianca Maria Bresolin, Narmina O. Balayeva, Luis I. Granone, Ralf Dillert, Detlef W. Bahnemann, Mika Sillanpää

Research output

Abstract

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.

Original languageEnglish
Article number110214
JournalSolar Energy Materials and Solar Cells
Volume204
Early online date24 Oct 2019
DOIs
Publication statusE-pub ahead of print - 24 Oct 2019

Fingerprint

Perovskite
Lead
Photocatalysts
Light absorption
Irradiation
Transportation charges
Chemical stability
Composite materials
Charge carriers
Formaldehyde
Methanol
Energy gap
X ray photoelectron spectroscopy
Spectroscopy
Nanoparticles
Transmission electron microscopy
X ray diffraction
Oxidation
Scanning electron microscopy
perovskite

Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films

Cite this

Bresolin, B. M., Balayeva, N. O., Granone, L. I., Dillert, R., Bahnemann, D. W., & Sillanpää, M. (2020). Anchoring lead-free halide Cs3Bi2I9 perovskite on UV100–TiO2 for enhanced photocatalytic performance. Solar Energy Materials and Solar Cells, 204, [110214]. https://doi.org/10.1016/j.solmat.2019.110214
Bresolin, Bianca Maria ; Balayeva, Narmina O. ; Granone, Luis I. ; Dillert, Ralf ; Bahnemann, Detlef W. ; Sillanpää, Mika. / Anchoring lead-free halide Cs3Bi2I9 perovskite on UV100–TiO2 for enhanced photocatalytic performance. In: Solar Energy Materials and Solar Cells. 2020 ; Vol. 204.
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Anchoring lead-free halide Cs3Bi2I9 perovskite on UV100–TiO2 for enhanced photocatalytic performance. / Bresolin, Bianca Maria; Balayeva, Narmina O.; Granone, Luis I.; Dillert, Ralf; Bahnemann, Detlef W.; Sillanpää, Mika.

In: Solar Energy Materials and Solar Cells, Vol. 204, 110214, 01.2020.

Research output

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T1 - Anchoring lead-free halide Cs3Bi2I9 perovskite on UV100–TiO2 for enhanced photocatalytic performance

AU - Bresolin, Bianca Maria

AU - Balayeva, Narmina O.

AU - Granone, Luis I.

AU - Dillert, Ralf

AU - Bahnemann, Detlef W.

AU - Sillanpää, Mika

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KW - Heterostructure

KW - Perovskite

KW - Photocatalysis

KW - Titanium dioxide

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