One-step template sol-gel synthesis of TiO2-based thin-film photocatalysts

  • Maryia A. Yauseichyk Belarusian State University of Informatics and Radioelectronics, 6 P. Broŭki Street, Minsk 220013, Belarus
  • Sergey E. Maksimov Belarusian State University of Informatics and Radioelectronics, 6 P. Broŭki Street, Minsk 220013, Belarus
  • Liudmila S. Khoroshko Belarusian State University of Informatics and Radioelectronics, 6 P. Broŭki Street, Minsk 220013, Belarus; Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus
  • Aleksey V. Baglov Belarusian State University of Informatics and Radioelectronics, 6 P. Broŭki Street, Minsk 220013, Belarus; Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus
  • Olga V. Korolik Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus
  • Dmitry V. Yakimchuk Scientific-Practical Materials Research Centre, National Academy of Sciences of Belarus, 19 P. Broŭki Street, Minsk 220072, Belarus
  • Olim N. Ruzimuradov Turin Polytechnic University in Tashkent, 17 Kichik Halqa Yo’li Street, Tashkent 100095, Uzbekistan
  • Shavkat I. Mamatkulov Institute of Material Science, SPA «Physics-Sun», Academy of Sciences of the Republic of Uzbekistan, 2b Bodomzor Yo’li Street, Tashkent 100084, Uzbekistan

Abstract

Thin-film coatings of TiO2 on monocrystalline silicon wafers were obtained from suspensions based on acid-free titanium dioxide producing sol and thiocarbamide in various concentrations. The morphology, phase composition and photocatalytic properties of the fabricated films have been investigated. Formation of a mixture of anatase and rutile phases in a TiO2 film was revealed by the Raman spectroscopy, with the proportion of rutile increasing with an increase in the annealing temperature of the TiO2 – Si structures from 550 to 850 °C. The photocatalytic activity of the obtained structures with respect to the test organic pollutant, the Rhodamine B dye, was established. When aqueous solutions of Rhodamine B are irradiated with UV light (wavelength 365 nm) in the presence of fabricated film structures for 60 min, up to 48 % destruction of the dye is observed relative to its initial concentration. Moreover, the best result is shown by the TiO2 film formed from a suspension with the maximum concentration of thiocarbamide (96 mg/mL) at annealing temperature of 850 °C. Prospects of the obtained thin-film coatings for the purification of water from organic pollutants are discussed.

Author Biographies

Maryia A. Yauseichyk, Belarusian State University of Informatics and Radioelectronics, 6 P. Broŭki Street, Minsk 220013, Belarus

assistant at the department of physics, faculty of computer systems and networks

Sergey E. Maksimov, Belarusian State University of Informatics and Radioelectronics, 6 P. Broŭki Street, Minsk 220013, Belarus

technician at the Center of nanoelectronics and advanced materials

Liudmila S. Khoroshko, Belarusian State University of Informatics and Radioelectronics, 6 P. Broŭki Street, Minsk 220013, Belarus; Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

PhD (physics and mathematics), docent; associate professor at the department of micro- and nanoelectronics, faculty of radioengineering and electronics, Belarusian State University of Informatics and Radioelectronics, and leading researcher at the laboratory of energy efficient materials and technologies, faculty of physics, Belarusian State University

Aleksey V. Baglov, Belarusian State University of Informatics and Radioelectronics, 6 P. Broŭki Street, Minsk 220013, Belarus; Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

researcher at the Center of nanoelectronics and advanced materials, Belarusian State University of Informatics and Radioelectronics, and researcher at the laboratory of energy efficient materials and technologies, faculty of physics, Belarusian State University
 

Olga V. Korolik, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

PhD (physics and mathematics); head of the laboratory of energy efficient materials and technologies, faculty of physics

Dmitry V. Yakimchuk, Scientific-Practical Materials Research Centre, National Academy of Sciences of Belarus, 19 P. Broŭki Street, Minsk 220072, Belarus

PhD (physics and mathematics), docent; senior researcher at the department of cryogenic research

Olim N. Ruzimuradov, Turin Polytechnic University in Tashkent, 17 Kichik Halqa Yo’li Street, Tashkent 100095, Uzbekistan

doctor of science (chemistry); professor at the department of natural-mathematical science

Shavkat I. Mamatkulov, Institute of Material Science, SPA «Physics-Sun», Academy of Sciences of the Republic of Uzbekistan, 2b Bodomzor Yo’li Street, Tashkent 100084, Uzbekistan

PhD (physics and mathematics); head of the laboratory of multifunctional materials

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Published
2023-05-25
Keywords: sol-gel synthesis, template method, titanium dioxide, photocatalysis, rutile, anatase, thiocarbamide
Supporting Agencies The work was carried with financial support by the Belarusian Republican Foundation for Fundamental Research (project F21UZBG-002).
How to Cite
Yauseichyk, M. A., Maksimov, S. E., Khoroshko, L. S., Baglov, A. V., Korolik, O. V., Yakimchuk, D. V., Ruzimuradov, O. N., & Mamatkulov, S. I. (2023). One-step template sol-gel synthesis of TiO2-based thin-film photocatalysts. Journal of the Belarusian State University. Physics, 2, 58-65. Retrieved from https://journals.bsu.by/index.php/physics/article/view/5604
Issue
No 2 (2023): Journal of the Belarusian State University. Physics
Section
Semiconductor Physics and Engineering

Copyright (c) 2023 Journal of the Belarusian State University. Physics

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