Danyliuk N. Catalytic activity of Iron and Titanium (IV) oxides in water purification under the influence of hydrogen peroxide

Українська версія

Thesis for the degree of Doctor of Philosophy (PhD)

State registration number

0825U000796

Thesis Registration Form

0825U000796.pdf

Applicant for

Specialization

  • 102 - Хімія

Specialized Academic Board

PhD 123

Vasyl Stefanyk Precarpathian National University

Essay

Object of study: heterogeneous Fenton-like catalysts (Fe3-xMnxO4, Fe2O3) and photocatalysts (TiO2(P25), TiO2(rutile), TiO2(anatase+rutile), TiO2/AgI, (Ti,Fe)O2). Purpose of the research: to investigate the catalytic activity of iron and titanium (IV) oxides in the purification of water from organic toxicants in the presence of hydrogen peroxide. Description of methodology/research methods. X-ray analysis, scanning electron microscopy, infrared and Mössbauer spectroscopy were used to study the structural and morphological characteristics. The content of iron ions in the purified water was determined by inductively coupled plasma optical emission spectroscopy (ICP-OES). Specialist tools and equipment: Shimadzu XRD-7000 diffractometer, REMMA-102-02 scanning electron microscope, Thermo Nicolet Nexus infrared spectrometer, MS1104EM spectrometer, Quantachrome Autosorb sorbometer, Nova 2200e, inductively coupled plasma optical emission spectrometer (Avio 500 ICP-OES, PerkinElmer, USA). Software that was used during the processing of the obtained data or for conducting research: Match 3.0, Univem, FullProf, Design Expert V8.0.6, OriginPro 2018, MS Excel 2016. Theoretical and practical results: an obtained oxide catalysts can be used for the rapid degradation of organic substances in industrial wastewater treatment systems. Novelty: is that, for the first time, a correlation has been established between the crystallite size of Mn-substituted magnetite nanoparticles and the rate constant of the catalytic reaction, and the effect of the electromagnetic field on the catalytic properties of the synthesised Fe3-xMnxO4 powders has been investigated. A new method of preparing hematite catalyst granules for the catalytic decomposition of hydrogen peroxide in a flow reactor has been proposed. Rapid methods have been developed to analyse the rate of photocatalytic degradation of dyes using a smartphone and a luxmeter. For the first time, it was found that the addition of H2O2 to the reaction mixture increases the photocatalytic activity of yellow TiO2 and rutile TiO2 due to additional hydroxyl radicals formed by the reductive mechanism. Efficiency of implementation: the materials obtained have prospects for use in water treatment, ecology and the chemical industry. Field of application: chemical industry, materials science, ecology.

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Research papers

1. Effect of Mn2+ substitution on catalytic properties of Fe3-xMnxO4 nanoparticles synthesized via co-precipitation method / Danyliuk N.V., Lapchuk I.V., Kotsyubynsky V.O., Boychuk V.M., Husak V.V. Physics and chemistry of solid state. 2023. Vol. 24, no. 4. P. 748–760. URL: https://doi.org/10.15330/pcss.24.4.748-760

2. Water disinfection using hydrogen peroxide with fixed bed hematite catalyst – kinetic and activity studies / Tatarchuk T.R., Shyichuk A.V., Danyliuk N.V., Lapchuk I.V., Macyk W. Environmental science and pollution research. 2024. Vol. 31. P. 26592–26605. URL: https://doi.org/10.1007/s11356-024-32794-0

3. Optimization of TiO2-P25 photocatalyst dose and H2O2 concentration for advanced photo-oxidation using smartphone-based colorimetry / Danyliuk N.V., Tatarchuk T.R., Kannan K., Shyichuk A.V. Water science and technology. 2021. Vol. 84, no. 2. P. 469–483. URL: https://doi.org/10.2166/wst.2021.236

4. Photocatalytic degradation of dyes using rutile TiO2 synthesized by reverse micelle and low temperature methods: real-time monitoring of the degradation kinetics / Tatarchuk T.R., Danyliuk N.V., Shyichuk A.V., Macyk W., Naushad Mu. Journal of molecular liquids. 2021. Vol. 342. P. 117407. URL: https://doi.org/10.1016/j.molliq.2021.117407

5. Yellow TiO2 from titanium peroxo complexes: verification of the visible light activity and a rational enhancement of its photocatalytic efficiency / K. Yaemsunthorn K., Tatarchuk T.R., Danyliuk N.V., Shyichuk A.V., Macyk W. Journal of environmental chemical engineering. 2023. Vol. 11. P. 111520. URL: https://doi.org/10.1016/j.jece.2023.111520

Structural, morphological and photocatalytic properties of TiO2 obtained by thermolytic decomposition of the [Ti(OH2)6]3+∙3Cl¯ aquacomplex / Mironyuk I.F, Danyliuk N.V., Turovska L.V., Mykytyn I.M. Physics and chemistry of solid state. 2022. Vol. 23, no. 4. P. 741–755. URL: https://doi.org/10.15330/pcss.23.4.741-755

7. Structural, morphological and photocatalytic properties of nanostructured TiO2/AgI photocatalyst / Mironyuk I.F., Danyliuk N.V., Turovska L.V., Mykytyn I.M., Kotsyubynsky V.O. Physics and chemistry of solid state. 2023. Vol. 24, no. 2. P. 374–384. URL: https://doi.org/10.15330/pcss.24.2.374-384

8. Photocatalytic degradation of Congo red dye using Fe-doped TiO2 nanocatalysts / Mironyuk I.F., Danyliuk N.V., Tatarchuk T.R., Mykytyn I.M., Kotsyubynsky V.O. Physics and chemistry of solid state. 2021. Vol. 22, no. 4. P. 697–710. URL: https://doi.org/10.15330/pcss.22.4.697-710

9. Експрес-метод колориметричного визначення іонів Fe(III) у воді за допомогою смартфону: RGB-аналіз цифрових зображень / Данилюк Н.В., Заторський Р.А., Шийчук А.О., Татарчук Т.Р. Наукові нотатки. 2022. № 72. С. 18–22. URL: https://doi.org/10.36910/775.24153966.2021.72.3

10. Данилюк Н. В. Фотокаталітична деградація типових антибіотиків / Наукові нотатки. 2023. № 75. С. 186–192. URL: https://doi.org/10.36910/775.24153966.2023.75.31

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