Acid-treated Fe-doped TiO2 as a high performance photocatalyst used for degradation of phenol under visible light irradiation
Abstract
The photocatalytic activity of Fe-doped TiO 2 nanoparticles is significantly increased by an acid-treatment process. The photocatalyst nanoparticles were prepared using sol-gel method with 0.5 mol% ratio of Fe:Ti in acidic pH of 3. The nanoparticles were structurally characterized by means of X-ray diffraction (XRD), high-resolution transmission electron microscope (HRTEM), energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS) and diffuse reflectance spectroscopy (DRS). It was observed that the photocatalytic activity suffered from an iron oxide contaminating layer deposited on the surface of the nanoparticles. This contamination layer was removed using an HCl acid-treatment process. The photocatalytic activity using 500 mg/L of Fe 0.5-TiO 2 in a 10 mg/L of phenol solution increased significantly from 33% to 57% (about 73% increase in the performance), within 90 min of reaction time under visible light irradiation. This significant improvement was achieved by removing the iron oxide contamination layer from the surface of the nanoparticles and adjusting pH to mild acidic and basic pHs.
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Iron-doped titania nanoparticles and thin films have been synthesized, characterized and tested for degradation of methylene blue, phenol and nitrobenzene in water under visible irradiation.
“iron-doped titania nanoparticles and thin films were synthesized, characterized and tested for the degradation of methylene blue [30], phenol [31] and nitrobenzene [32] in water under visible irradiation.”
From Degradation of Sulfamethoxazole Using Iron-Doped Titania and Simulated Solar Radiation (2019) · cites this paper as [31]
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Degradation of Sulfamethoxazole Using Iron-Doped Titania and Simulated Solar Radiation
Tsiampalis, A., Frontistis, Z., Binas, V., Kiriakidis, G., & Mantzavinos, D. (2019) · Catalysts · doi:10.3390/catal9070612 · Cited by 46 · see citing works
“In recent studies, iron-doped titania nanoparticles and thin films were synthesized, characterized and tested for the degradation of methylene blue [30], phenol [31] and nitrobenzene [32] in water under visible irradiation.”
Background
- Authors
- Moradi, V., Ahmed, F., Jun, M. B. G., Blackburn, A., & Herring, R. A.
- Affiliations
- University of Victoria (CA)
- Purdue University West Lafayette (US)
- Corresponding author
- Moradi, Vahid
- Venue
- Journal of Environmental Sciences
- Publisher
- Elsevier BV
- Published
- 2019-09
- Volume
- 83
- Pages
- 183-194
- ISSN
- 1001-0742 (ISSN-L)
- OpenAlex
- W2937423940
- Cited by
- 51
- References
- 59
- Citations by year
- 2026: 6 · 2025: 6 · 2024: 8 · 2023: 6 · 2022: 4 · 2021: 11 · 2020: 7 · 2019: 3
- FWCI
- 1.33
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Environmental Sciences (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Natural Sciences and Engineering Research Council of Canada
- 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 › Environmental Science › Water Science and Technology › Advanced oxidation water treatment
- Keywords
- Fe-doped TiO2, photocatalysis, phenol degradation, visible light photocatalysis, acid treatment, sol-gel synthesis, titanium dioxide nanoparticles, pH effect, wastewater treatment
- MeSH terms
- Catalysis, Light, Models, Chemical, Phenols, Spectrometry, X-Ray Emission, Titanium, X-Ray Diffraction, Phenol, Photochemical Processes, Photoelectron Spectroscopy
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