Efficient N, Fe Co-Doped TiO2 active under cost-effective visible LED light : from powders to films
- Author
- Sigrid Douven, Julien G. Mahy, Cédric Wolfs, Charles Reyserhove, Dirk Poelman (UGent) , François Devred, Eric M. Gaigneaux and Stéphanie D. Lambert
- Organization
- Abstract
- An eco-friendly photocatalytic coating, active under a cost-effective near-visible LED system, was synthesized without any calcination step for the removal of organic pollutants. Three types of doping (Fe, N and Fe + N), with different dopant/Ti molar ratios, were investigated and compared with undoped TiO2 and the commercial P25 photocatalyst. Nano-crystalline anatase-brookite particles were successfully produced with the aqueous sol-gel process, also at a larger scale. All samples displayed a higher visible absorption and specific surface area than P25. Photoactivity of the catalyst powders was evaluated through the degradation of p-nitrophenol in water under visible light (>400 nm). As intended, all samples were more performant than P25. The N-doping, the Fe-doping and their combination promoted the activity under visible light. Films, coated on three different substrates, were then compared. Finally, the photoactivity of a film, produced from the optimal N-Fe co-doped colloid, was evaluated on the degradation of (i) p-nitrophenol under UV-A light (365 nm) and (ii) rhodamine B under LED visible light (395 nm), and compared to undoped TiO2 film. The higher enhancement is obtained under the longer wavelength (395 nm). The possibility of producing photocatalytic films without any calcination step and active under low-energy LED light constitutes a step forward for an industrial development.
- Keywords
- Physical and Theoretical Chemistry, Catalysis, photocatalysis, Fe/N doping, titania, aqueous sol-gel process, LED visible light, SOL-GEL SYNTHESIS, TRANSITION-METAL IONS, PHOTOCATALYTIC DEGRADATION, OXIDATION, NITROGEN, UV, PRINCIPLES, TITANIA, HYBRID, SIO2
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-8664993
- MLA
- Douven, Sigrid, et al. “Efficient N, Fe Co-Doped TiO2 Active under Cost-Effective Visible LED Light : From Powders to Films.” CATALYSTS, vol. 10, no. 5, 2020, doi:10.3390/catal10050547.
- APA
- Douven, S., Mahy, J. G., Wolfs, C., Reyserhove, C., Poelman, D., Devred, F., … Lambert, S. D. (2020). Efficient N, Fe Co-Doped TiO2 active under cost-effective visible LED light : from powders to films. CATALYSTS, 10(5). https://doi.org/10.3390/catal10050547
- Chicago author-date
- Douven, Sigrid, Julien G. Mahy, Cédric Wolfs, Charles Reyserhove, Dirk Poelman, François Devred, Eric M. Gaigneaux, and Stéphanie D. Lambert. 2020. “Efficient N, Fe Co-Doped TiO2 Active under Cost-Effective Visible LED Light : From Powders to Films.” CATALYSTS 10 (5). https://doi.org/10.3390/catal10050547.
- Chicago author-date (all authors)
- Douven, Sigrid, Julien G. Mahy, Cédric Wolfs, Charles Reyserhove, Dirk Poelman, François Devred, Eric M. Gaigneaux, and Stéphanie D. Lambert. 2020. “Efficient N, Fe Co-Doped TiO2 Active under Cost-Effective Visible LED Light : From Powders to Films.” CATALYSTS 10 (5). doi:10.3390/catal10050547.
- Vancouver
- 1.Douven S, Mahy JG, Wolfs C, Reyserhove C, Poelman D, Devred F, et al. Efficient N, Fe Co-Doped TiO2 active under cost-effective visible LED light : from powders to films. CATALYSTS. 2020;10(5).
- IEEE
- [1]S. Douven et al., “Efficient N, Fe Co-Doped TiO2 active under cost-effective visible LED light : from powders to films,” CATALYSTS, vol. 10, no. 5, 2020.
@article{8664993,
abstract = {{An eco-friendly photocatalytic coating, active under a cost-effective near-visible LED system, was synthesized without any calcination step for the removal of organic pollutants. Three types of doping (Fe, N and Fe + N), with different dopant/Ti molar ratios, were investigated and compared with undoped TiO2 and the commercial P25 photocatalyst. Nano-crystalline anatase-brookite particles were successfully produced with the aqueous sol-gel process, also at a larger scale. All samples displayed a higher visible absorption and specific surface area than P25. Photoactivity of the catalyst powders was evaluated through the degradation of p-nitrophenol in water under visible light (>400 nm). As intended, all samples were more performant than P25. The N-doping, the Fe-doping and their combination promoted the activity under visible light. Films, coated on three different substrates, were then compared. Finally, the photoactivity of a film, produced from the optimal N-Fe co-doped colloid, was evaluated on the degradation of (i) p-nitrophenol under UV-A light (365 nm) and (ii) rhodamine B under LED visible light (395 nm), and compared to undoped TiO2 film. The higher enhancement is obtained under the longer wavelength (395 nm). The possibility of producing photocatalytic films without any calcination step and active under low-energy LED light constitutes a step forward for an industrial development.}},
articleno = {{547}},
author = {{Douven, Sigrid and Mahy, Julien G. and Wolfs, Cédric and Reyserhove, Charles and Poelman, Dirk and Devred, François and Gaigneaux, Eric M. and Lambert, Stéphanie D.}},
issn = {{2073-4344}},
journal = {{CATALYSTS}},
keywords = {{Physical and Theoretical Chemistry,Catalysis,photocatalysis,Fe/N doping,titania,aqueous sol-gel process,LED visible light,SOL-GEL SYNTHESIS,TRANSITION-METAL IONS,PHOTOCATALYTIC DEGRADATION,OXIDATION,NITROGEN,UV,PRINCIPLES,TITANIA,HYBRID,SIO2}},
language = {{eng}},
number = {{5}},
pages = {{22}},
title = {{Efficient N, Fe Co-Doped TiO2 active under cost-effective visible LED light : from powders to films}},
url = {{http://dx.doi.org/10.3390/catal10050547}},
volume = {{10}},
year = {{2020}},
}
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