Laser processing of TiO2 colloids for an enhanced photocatalytic water splitting activity
Abstract
We have measured the photocatalytic water splitting activity of several titania colloids, modified by nanosecond pulsed laser irradiation. Photocatalysis has been tested using UV and visible light. We have found that laser irradiation increases the hydrogen production efficiency up to a factor of three for anatase, rutile and P25. A hydrogen production rate as high as 30mmolg-1 h-1 has been obtained with good stability, tested by repeated runs. The chemical and morphological properties of the nanoparticles have been studied by electron microscopy, X-ray photoelectron spectroscopy and Raman spectroscopy, showing that laser irradiation promotes the formation of disordered surface state and lattice distortion which could be responsible for the observed enhanced photocatalytic activity.
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Some of the most investigated and performing strategies to modify the absorption properties of ZnO and TiO2 are the introduction of atomic defects and the design of new nanocomposite materials resulting from the coupling of different semiconductor oxides, metals and carbon-based materials.
“As already mentioned, some of the most investigated and performing strategies to modify absorption properties of ZnO and TiO2 are the introduction of atomic defects and the design of new nanocomposite materials resulting by the coupling of different semiconductor oxides, metals and carbon-based materials [255,256,257,258,259,260].”
From Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications (2020) · cites this paper as [257]
Filice et al. confirmed a long living and an extended catalytic efficiency in the visible spectrum for water photo-splitting by titania colloids, modified by nanosecond pulsed laser irradiation.
“Moreover, Filice et al. [257] confirmed a long living and an extended catalytic efficiency in the visible spectrum for water photo-splitting by titania colloids, modified by nanosecond pulsed laser irradiation.”
From Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications (2020) · cites this paper as [257]
Cites
Raman spectrum of anatase, TiO <sub>2</sub>
Ohsaka, T., Izumi, F., & Fujiki, Y. (1978) · Journal of Raman Spectroscopy · doi:10.1002/jrs.1250070606 · Cited by 2,327 · see citing works
Chen, X., Zhao, D., Liu, K., Wang, C., Liu, L., Li, B., Zhang, Z., & Shen, D. (2015) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.5b04568 · Cited by 147 · see citing works
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Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications
Fazio, E., Gökce, B., De Giacomo, A., Meneghetti, M., Compagnini, G., Tommasini, M., Waag, F., Lucotti, A., Zanchi, C. G., Ossi, P. M., et al. (2020) · Nanomaterials · doi:10.3390/nano10112317 · Cited by 346 · see citing works
“[257] confirmed a long living and an extended catalytic efficiency in the visible spectrum for water photo-splitting by titania colloids, modified by nanosecond pulsed laser irradiation.”
BackgroundSelf-citation
- Authors
- Filice, S., Compagnini, G., Fiorenza, R., Scirè, S., D’Urso, L., Fragalà, M. E., Russo, P., Fazio, E., & Scalese, S.
- Affiliations
- University of Catania (IT)
- University of Waterloo (CA)
- University of Messina (IT)
- Institute for Microelectronics and Microsystems (IT)
- Corresponding author
- Compagnini, Giuseppe
- ORCID
- Venue
- Journal of Colloid and Interface Science
- Publisher
- Elsevier BV
- Published
- 2017-03
- Volume
- 489
- Pages
- 131-137
- ISSN
- 0021-9797 (ISSN-L)
- OpenAlex
- W2479578160
- Cited by
- 51
- References
- 2
- Citations by year
- 2026: 4 · 2025: 2 · 2024: 1 · 2023: 8 · 2022: 4 · 2021: 3 · 2020: 11 · 2019: 7 · 2018: 4 · 2017: 7
- FWCI
- 1.63
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Colloid and Interface Science (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Ministero dell’Istruzione, dell’Università e della Ricerca
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › TiO2 Photocatalysis and Solar Cells
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Advanced Photocatalysis Techniques
- Physical Sciences › Engineering › Biomedical Engineering › Laser-Ablation Synthesis of Nanoparticles
- Keywords
- TiO2 colloids, photocatalytic water splitting, pulsed laser irradiation, hydrogen production, anatase, rutile, P25 titania, surface states, lattice distortion, nanoparticle morphology, photocatalyst stability
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