Sol–gel preparation and properties study of TiO2 thin film for photocatalytic reduction of chromium(VI) in photocatalysis process
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In this paper, a sol–gel technique with dip coating method is used to prepare photocatalytic TiO2 thin films immobilized on glass plates. The structure and morphology of thin films are characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The structural characterization of this film shows that the titanium oxide anatase phase is predominant at 400–700 °C. The appearance of the rutile phase depends mainly on the number of coating cycles. For example, the rutile phase appeared at 600 °C with 5 coating cycles, however, it disappeared fromTiO2 crystalline after 8 coating cycles. The obtained thin films from each preparation condition were employed in experiment of photoreduction of chromium. The results show that the Chromium(VI) is successfully removed from aqueous in photocatalysis system using the obtained thin film with high portions of anatase phase. The photoactivity of the prepared TiO2 thin films exhibits a comparable efficiency with TiO2 powder, Degussa P-25.
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Advanced technologies like photocatalysis have shown their effectiveness and potential in eliminating heavy metals.
“On the other hand, advanced technologies like photocatalysis have shown their effectiveness and potential in eliminating heavy metals.170,171”
From Emerging nanotechnology approaches for sustainable water treatment and heavy metals removal: a comprehensive review (2025) · cites this paper as [171]
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- Authors
- Kajitvichyanukul, P., Ananpattarachai, J., & Pongpom, S.
- Affiliations
- King Mongkut's University of Technology Thonburi (TH)
- Chulalongkorn University (TH)
- Corresponding author
- Kajitvichyanukul, Puangrat
- Venue
- Science and Technology of Advanced Materials
- Publisher
- Informa UK Limited
- Published
- 2005-01
- Volume
- 6
- Issue
- 3-4
- Pages
- 352-358
- ISSN
- 1468-6996 (ISSN-L)
- 1878-5514
- OpenAlex
- W1980304872
- Cited by
- 144
- References
- 17
- Citations by year
- 2026: 5 · 2025: 5 · 2024: 9 · 2023: 9 · 2022: 4 · 2021: 10 · 2020: 11 · 2019: 11 · 2018: 11 · 2017: 11 · 2016: 6 · 2015: 12 · 2014: 11 · 2013: 5 · 2012: 5
- FWCI
- 0.52
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Science and Technology of Advanced Materials (publishedVersion)
- Funders
- National Science and Technology Development Agency
- National Metal and Materials Technology Center
- 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
- TiO2 thin films, sol-gel dip coating, photocatalytic reduction, hexavalent chromium removal, anatase, rutile phase, immobilized photocatalyst, photoactivity
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