Photocatalytic degradation of naproxen using single-doped TiO2/FTO and co-doped TiO2-VO2/FTO thin films synthesized by sonochemistry
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Luis Rene Orozco-Gonzalez
Abstract
Single-doped TiO2/FTO and co-doped TiO2-VO2/FTO thin films were prepared by sonochemistry and spray pyrolysis deposition on FTO substrates. The co-deposition of TiO2-VO2 on FTO significantly changed the morphological, structural, optical, and photocatalytical properties compared to the single-deposition. X-ray diffraction and HRTEM results showed polycrystalline film structures composed of SnO2-tetragonal from FTO, anatase-TiO2, rutile-TiO2, and monoclinic-VO2 phases. The co-deposition technique increases the particle size distribution by approximately two times compared to simple deposition. The single-doped TiO2/FTO thin film had a 15% higher bandgap than the co-doped TiO2-VO2/FTO thin film, and the electrical resistivity calculated from the van der Pauw method was 55.3 MΩ sq−1 for the TiO2-VO2/FTO co-doped thin film, 2.7 times lower than that obtained for the TiO2/FTO thin film. Single-doped TiO2/FTO and co-doped TiO2-VO2/FTO thin films presented pseudo-first-order reactions at pH 6.5, with kinetic constants of 0.026 and 0.015 min−1, respectively. This behavior is related to the production of inactive or less active aggregates by the addition of vanadium during the co-doping process, which led to lattice contraction, which encouraged the formation of the rutile phase rather than the anatase phase. However, the co-doped thin film can modify the metal-insulator transition compared to the single-doped TiO2/FTO thin film. Furthermore, co-deposition decreased the bandgap value by 16% compared to single-deposition thin film. In this sense, co-doped TiO2-VO2/FTO thin films inhibited the recombination of photogenerated carriers and the formation of reactive oxygen species involved in the photocatalytic degradation of naproxen.
Acknowledgments
The authors express their gratitude for the financial support of the DGAPA of the UNAM through the IN 102419 project that made the realization and conclusion of this work possible. Also, the authors thank the academic technicians María Cristina Zorrilla Cangas and Antonio Morales Espino for their support in the Raman spectroscopy and XRD measurements, respectively. The authors also thank P. M. Téllez de La Torre for supporting the photocatalytic measurements.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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© 2022 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Special Issue Articles
- Preface of the special issue dedicated to the International Energy Conference, IEC 2021: sustainable energy as a platform for post-pandemic economic recovery
- Hydrodesulfurization of 4,6–Dimethyldibenzothiophene on NiMoP/γ–Al2O3 catalyst under reactive distillation conditions in a micro trickle bed reactor: solvent and temperature effect
- Bubble Column Bioreactor using native non-genetically modified organisms: a remediation alternative by hydrocarbon-polluted water from the Gulf of Mexico
- Depolymerization of lignin by extracellular activity of Pycnoporus cinnabarinus, to obtain cellulose
- Robust model-based control of a packed absorption column for the natural gas sweetening process
- The degradation of an aromatic organic compound by Aspergillus niger var tubingensis Ed8 produces metabolites that reduce Cr (VI)
- Analytical approach in higher predict residual error on MHD mixed convective motion of MoS2 engine-oil based nanofluid
- Photocatalytic degradation of naproxen using single-doped TiO2/FTO and co-doped TiO2-VO2/FTO thin films synthesized by sonochemistry
- Macroscopic analysis of chemical looping combustion with ilmenite versus conventional oxides as oxygen carriers
- Robust control designs for microalgae cultivation in continuous photobioreactors
- Evaluation of a rough-surface evaporator applied to an absorption heat transformer for water desalination
- Optimized infrared-assisted extraction to obtain total lipid from microalgae Scenedesmus obliquus: a green approach
Artikel in diesem Heft
- Frontmatter
- Special Issue Articles
- Preface of the special issue dedicated to the International Energy Conference, IEC 2021: sustainable energy as a platform for post-pandemic economic recovery
- Hydrodesulfurization of 4,6–Dimethyldibenzothiophene on NiMoP/γ–Al2O3 catalyst under reactive distillation conditions in a micro trickle bed reactor: solvent and temperature effect
- Bubble Column Bioreactor using native non-genetically modified organisms: a remediation alternative by hydrocarbon-polluted water from the Gulf of Mexico
- Depolymerization of lignin by extracellular activity of Pycnoporus cinnabarinus, to obtain cellulose
- Robust model-based control of a packed absorption column for the natural gas sweetening process
- The degradation of an aromatic organic compound by Aspergillus niger var tubingensis Ed8 produces metabolites that reduce Cr (VI)
- Analytical approach in higher predict residual error on MHD mixed convective motion of MoS2 engine-oil based nanofluid
- Photocatalytic degradation of naproxen using single-doped TiO2/FTO and co-doped TiO2-VO2/FTO thin films synthesized by sonochemistry
- Macroscopic analysis of chemical looping combustion with ilmenite versus conventional oxides as oxygen carriers
- Robust control designs for microalgae cultivation in continuous photobioreactors
- Evaluation of a rough-surface evaporator applied to an absorption heat transformer for water desalination
- Optimized infrared-assisted extraction to obtain total lipid from microalgae Scenedesmus obliquus: a green approach