A Mild in-Situ Method to Construct Fe-Doped Cauliflower-Like Rutile TiO2 Photocatalysts for Degradation of Organic Dye in Wastewater
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A mild in situ method was developed to construct an iron doped rutile TiO2 photocatalyst like cauliflower for degradation synthetic textile dye-methyl orange. The synthesized photocatalysts presented distinguished photocatalytic activity. At the optimal Fe concentration (0.5%), the decomposition rate of methyl orange (MO) was about 90% under 40 min of ultraviolet (UV) light irradiation. Whereas, to our knowledge, only 70% of the decomposition rate of MO was achieved by commercial photocatalyst P25 under the similar reaction condition. Additionally, the rutile preparation temperature did not exceed 100 °C, which was much lower than the traditional preparation calcination temperature (e.g., 600 °C). The specific surface area of Fe doped catalysts was bigger than that of the control sample and the catalyst characterization indicated that the doped iron was incorporated into the rutile TiO2 lattice and resulted in the lattice disorder. The lattice disorder would have generated surface defects in the crystal structure, which was in favor of the photocatalytic reaction. The UV-Vis diffuse refection characterization and Density Functional Theory (DFT) calculation suggested that doping a small amount of Fe into the lattice of rutile would lead to a narrower band gap and the formation of a doping energy level between conduction and valence bands of TiO2. This further increased the degradation efficiency of synthetic textile dyes in wastewaters. Our study has provided a relatively easy operation for synthesis Fe doped rutile TiO2, which is a benefit to decrease the cost in wastewater treatment process.
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A low-cost and easy procedure has been established to synthesize an iron-doped titania, a cauliflower-like photocatalyst for degradation of azodyes in water.
“a low-cost and easy procedure was established to synthesize an iron-doped titania, a cauliflower-like photocatalyst for the degradation of azodyes in water.”
From Degradation of Sulfamethoxazole Using Iron-Doped Titania and Simulated Solar Radiation (2019) · cites this paper as [33]
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- Authors
- Shi, X., Zhang, Y., Liu, X., Jin, H., Lv, H., He, S., Hao, H., & Li, C.
- Affiliations
- Hong Kong University of Science and Technology (HK)
- Inner Mongolia University (CN)
- Corresponding author
- Hao, Haigang
- Li, Changyan
- Venue
- Catalysts
- Publisher
- MDPI AG
- Published
- 2019-05-08
- Volume
- 9
- Issue
- 5
- Pages
- 426
- ISSN
- 2073-4344 (ISSN-L)
- OpenAlex
- W2946720114
- Cited by
- 23
- References
- 76
- Citations by year
- 2025: 1 · 2024: 4 · 2023: 3 · 2022: 1 · 2021: 6 · 2020: 5 · 2019: 3
- FWCI
- 0.80
- Type
- journal article
- Language
- en
- Open access
- gold
- dx.doi.org
- Licence
- Locations
- Catalysts (publishedVersion, cc-by)
- Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Program of Higher-level Talents of IMU (21300-5185109)
- Inner Mongolia Education Department Key Project (NJZZ16015)
- 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
- photocatalysts, methyl orange degradation, dyeing wastewater, cauliflower-like morphology, in situ synthesis, lattice disorder, surface defects, band gap narrowing, UV photocatalysis, low-temperature synthesis
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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