Article (Scientific journals)
Manipulating multi-spectral slow photons in bilayer inverse opal TiO2@BiVO4 composites for highly enhanced visible light photocatalysis.
Lourdu Madanu, Thomas; Chaabane, Laroussi; Mouchet, Sébastien et al.
2023In Journal of Colloid and Interface Science, 647, p. 233 - 245
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Keywords :
BiVO(4) (bismuth vanadate); Bilayer; Energy conversion; Inverse opals; Light harvesting; Photocatalysis; Photonic crystals; RhB degradation; Slow photons; TiO(2) (titania); Visible light; BiVO4 (bismuth vanadate); TiO2 (titania); Bi-layer; Bismuth vanadates; Inverse opal; Light-harvesting; Titania; Electronic, Optical and Magnetic Materials; Biomaterials; Surfaces, Coatings and Films; Colloid and Surface Chemistry
Abstract :
[en] Manipulation of light has been proved to be a promising strategy to increase light harvesting in solar-to-chemical energy conversion, especially in photocatalysis. Inverse opal (IO) photonic structures are highly promising for light manipulation as their periodic dielectric structures enable them to slow down light and localize it within the structure, thereby improving light harvesting and photocatalytic efficiency. However, slow photons are confined to narrow wavelength ranges and hence limit the amount of energy that can be captured through light manipulation. To address this challenge, we synthesized bilayer IO TiO2@BiVO4 structures that manifested two distinct stop band gap (SBG) peaks, arising from different pore sizes in each layer, with slow photons available at either edge of each SBG. In addition, we achieved precise control over the frequencies of these multi-spectral slow photons through pore size and incidence angle variations, that enabled us to tune their wavelengths to the electronic absorption of the photocatalyst for optimal light utilization in aqueous phase visible light photocatalysis. This first proof of concept involving multi-spectral slow photon utilization enabled us to achieve up to 8.5 times and 2.2 times higher photocatalytic efficiencies than the corresponding non-structured and monolayer IO photocatalysts respectively. Through this work, we have successfully and significantly improved light harvesting efficiency in slow photon-assisted photocatalysis, the principles of which can be extended to other light harvesting applications.
Disciplines :
Physics
Chemistry
Author, co-author :
Lourdu Madanu, Thomas;  Laboratory of Inorganic Materials Chemistry (CMI), University of Namur, Rue de Bruxelles, 61, 5000 Namur, Belgium
Chaabane, Laroussi;  Laboratory of Inorganic Materials Chemistry (CMI), University of Namur, Rue de Bruxelles, 61, 5000 Namur, Belgium
Mouchet, Sébastien  ;  Université de Mons - UMONS > Faculté des Sciences > Service des Matériaux Micro et Nanophotoniques ; Solid-State Physics Laboratory (LPS) & Namur Institute of Structured Matter (NISM), University of Namur, Rue de Bruxelles, 61, 5000 Namur, Belgium, School of Physics, University of Exeter, Physics Building, Stocker Road, Exeter EX4 4QL, UK
Deparis, Olivier;  Solid-State Physics Laboratory (LPS) & Namur Institute of Structured Matter (NISM), University of Namur, Rue de Bruxelles, 61, 5000 Namur, Belgium
Su, Bao-Lian;  Laboratory of Inorganic Materials Chemistry (CMI), University of Namur, Rue de Bruxelles, 61, 5000 Namur, Belgium, State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, China. Electronic address: bao-lian.su@unamur.be
Language :
English
Title :
Manipulating multi-spectral slow photons in bilayer inverse opal TiO2@BiVO4 composites for highly enhanced visible light photocatalysis.
Publication date :
October 2023
Journal title :
Journal of Colloid and Interface Science
ISSN :
0021-9797
eISSN :
1095-7103
Publisher :
Academic Press Inc., United States
Volume :
647
Pages :
233 - 245
Peer reviewed :
Peer Reviewed verified by ORBi
Development Goals :
6. Clean water and sanitation
11. Sustainable cities and communities
7. Affordable and clean energy
Research unit :
S803 - Matériaux Micro- et Nanophotoniques
Research institute :
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
Funders :
Waalse Gewest
European Commission
F.R.S.-FNRS - Fonds de la Recherche Scientifique
Marie Skłodowska-Curie Actions
Funding text :
Thomas Lourdu Madanu thanks the Europe Occidentale Francophone (EOF) and Andhra (India) Jesuit provinces for their support in realizing this work. Sébastien R. Mouchet was supported by the Belgian National Fund for Scientific Research (FRS-FNRS) (91400/1.B.309.18F), the Maturation Fund of the Walloon Region, and a BEWARE Fellowship (Convention n◦2110034) of the Walloon Region (Marie Skłodowska-Curie Actions of the European Union - COFUND - contract 847587), as a Postdoctoral Researcher. The authors also acknowledge the Physico-Chemical Characterization (PC 2 ) Technology Platform ( https://platforms.unamur.be/pc2 ) and the Electron Microscopy Service (SME) of UNamur ( http://www.unamur.be/en/sevmel ), which is a member of the Morphology - Imaging (MORPH-IM) Technology Platform of UNamur.The Thomas Lourdu Madanu thanks the Europe Occidentale Francophone (EOF) and Andhra (India) Jesuit provinces for their support in realizing this work. Sébastien R. Mouchet was supported by the Belgian National Fund for Scientific Research (FRS-FNRS) (91400/1.B.309.18F), the Maturation Fund of the Walloon Region, and a BEWARE Fellowship (Convention n◦2110034) of the Walloon Region (Marie Skłodowska-Curie Actions of the European Union - COFUND - contract 847587), as a Postdoctoral Researcher. The authors also acknowledge the Physico-Chemical Characterization (PC2) Technology Platform ( https://platforms.unamur.be/pc2) and the Electron Microscopy Service (SME) of UNamur ( http://www.unamur.be/en/sevmel), which is a member of the Morphology - Imaging (MORPH-IM) Technology Platform of UNamur.
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