Ivanna Lapchuk

Vasyl Stefanyk Precarpathian National University

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ТТ

Тетяна Татарчук

Vasyl Stefanyk Precarpathian National University

Nazarii Danyliuk

Vasyl Stefanyk Precarpathian National University

Alexander Shyichuk

Vasyl Stefanyk Precarpathian National University

Volodymyr Kotsyubynsky

Vasyl Stefanyk Precarpathian National University

V. Hušák

Vasyl Stefanyk Precarpathian National University

Volodymyr Mandzyuk

Weatherford College

Wojciech Macyk

Jagiellonian University

Ostap Olkhovyy

Jagiellonian University

Mariana Myslin

Vasyl Stefanyk Precarpathian National University

РВ

Р. В. Куцык

Ivano-Frankivsk National Medical University

Cooperative Institutions

Vasyl Stefanyk Precarpathian National University

Universiti Sains Malaysia

Jagiellonian University

King Saud University

Wuhan Textile University

University of Technology Malaysia

Universiti Teknologi Petronas

Bydgoszcz University of Science and Technology

Czech Academy of Sciences, Institute of Physics

Institute of Physics

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Adsorption of azo dye Congo red on the Sn-doped TiO2 surface

Physics and Chemistry of Solid State (2021)

Ivan Mironyuk Mariana Myslin Ivanna Lapchuk Тетяна Татарчук Ostap Olkhovyy

In this paper, the effect of SnO2 impurity on the surface charge and adsorption properties of TiO2 samples is investigated. The experimental value of the zero charge point for TiO2 with 3%, 6% and 12% of SnO2 equals 3.53, 3.97 and 3.2, respectively. The adsorption activity of the samples was studied on model solutions of the anionic dye – Congo red. The maximum adsorption capacity (qexp) equals 24.6 mg/g for 3Sn/TiO2, 25.0 mg/g for 6Sn/TiO2 and 39.1 mg/g for 12Sn/TiO2. Langmuir, Freundlich, and Dubinin-Radushkevich models were used to describe the adsorption mechanism of Congo red dye on the surface of Sn/TiO2 samples. Based on the results of the studies of Congo red adsorption by the surface of titanium dioxide doped with Sn, all samples agree best with the Langmuir model. The correlation coefficients for the Langmuir isotherms are in the range of 0.9927 - 0.9996, while the values of R2 for the Freundlich and Dubinin-Radushkevich isotherms are in the range of 0.721 - 0.8329 and 0.8283 - 0.9433, respectively. Experimental data obtained from adsorption isotherms show that the TiO2 sample containing 12% SnO2 is the most active. The best result of Congo red removal occurred at a concentration of Co = 5 mg/l (% of removed dye ≈ 83% for 12Sn/TiO2; 81% for 6Sn/TiO2 and 71% for 3Sn/TiO2). Therefore, the studied samples of TiO2 doped with SnO2 can be used as effective adsorbents of Congo red from aqueous solutions.

Congo red

Surface charge

10.15330/pcss.22.3.561-567

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Citations (5)

Catalytic activity of magnetite and its magnetic heating properties

Materials Today Proceedings (2022)

Тетяна Татарчук Nazarii Danyliuk Ivanna Lapchuk Alexander Shyichuk Volodymyr Kotsyubynsky

Oxidizing agent

10.1016/j.matpr.2022.03.494

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Bacteria inactivation using spinel cobalt ferrite catalyst

Physics and Chemistry of Solid State (2023)

Nazarii Danyliuk Ivanna Lapchuk Тетяна Татарчук Р. В. Куцык Volodymyr Mandzyuk

The E. coli inactivation using hydrogen peroxide (H2O2) and cobalt ferrite granulated catalyst was investigated in a fixed-bed flow reactor. CoFe2O4 catalyst was synthesized by the co-precipitation method, granulated, and annealed at 1150°C. X-ray diffraction analysis was used to identify the crystal structure of the catalyst. CoFe2O4 catalyst demonstrates good catalytic activity for bacteria inactivation in the presence of H2O2. An increase in the hydrogen peroxide concentration increases the inactivation efficiency. The reactor demonstrates the E. coli inactivation of 99.94% at the H2O2 hydrogen peroxide concentration of 15 mM and initial bacterial concentration of 6·103 CFU/L. The water disinfection using a fixed-bed reactor demonstrates the broad prospects for industrial use.

Cobalt Ferrite

Peroxide

10.15330/pcss.24.2.256-261

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Citations (0)

Contributors

Elsevier eBooks (2023)

Norhayati Abdullah Augustine Chioma Affam Imran Ahmad Javed Alam Mansour Alhoshan

10.1016/b978-0-323-99160-5.09991-4

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Toxicity of water treated with Fenton-like ferrite catalyst

Physics and Chemistry of Solid State (2024)

Nazarii Danyliuk Ivanna Lapchuk V. Hušák

Recently, there has been a rapid growth in the use of nanoparticles in water treatment processes. However, an important task is to study the toxicity of the materials used and the reaction products formed. The purpose of this study was to evaluate the impact of the proposed water treatment method on the ecosystem. Algae are excellent model organisms for studying the toxic effects of catalyst nanoparticles. This work investigates the toxicity of cobalt ferrite (CoFe2O4) and hydrogen peroxide (H2O2) on the microalgae Chlorella vulgaris Beij. (C. vulgaris). The growth rate of C. vulgaris depends on the residual concentration of H2O2, indicating a stressful physiological state of the microalgae. Exposure to sintered cobalt ferrite granules does not affect the growth of freshwater algae. At a residual H2O2 concentration of 11.9 mM, algal cells' morphology, membrane integrity, and viability were severely impaired. Hydrogen peroxide is known to cause oxidative stress, as evidenced by a decrease in the growth rate of C. vulgaris and an increase in the number of dead cells. The study showed that the high residual concentration of H2O2 is the main obstacle to the discharge of treated water into the natural ecosystem.

10.15330/pcss.25.1.170-177

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Application of hybrid advanced oxidation and adsorption processes for pharmaceutical wastewater treatment

Elsevier eBooks (2023)

Ivanna Lapchuk Alexander Shyichuk Тетяна Татарчук

10.1016/b978-0-323-99160-5.00008-4

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Citations (3)

Synthesis, structure and morphology of magnesium ferrite nanoparticles, synthesized via “green” method

Physics and Chemistry of Solid State (2021)

Тетяна Татарчук Mariana Myslin Ivanna Lapchuk Ostap Olkhovyy Nazarii Danyliuk

In this paper, the synthesis of spinel magnesium ferrite (MgFe2O4) nanoparticles is reported, along with its structural, magnetic and hyperthermic properties, which ensure them being effectively used in various fields. Firstly, magnesium ferrite was synthesized via sol-gel auto-combustion method, using honey as the reducing agent. The crystallite size was calculated via the Scherrer method, the modified Scherrer method, the Williamson-Hall method, and the size-strain plot (SSP) method. X-ray analysis was used to confirm the structure of the spinel. For morphological study of ferrite nanoparticles, scanning electron microscopy (SEM) was used. Finally, hyperthermic properties of magnesium ferrite were analyzed for potential usage in medicine. According to these results, spinel magnesium ferrite (MgFe2O4) nanoparticles proved to be suitable for destruction of cancer cells, as they can be heated to the desired temperature, which will increase the sensitivity of those cells.

10.15330/pcss.22.2.195-203

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Citations (19)

Copper-substituted magnetite as a Fenton-like catalyst boosted with electromagnetic heating

Journal of Water Process Engineering (2024)

Тетяна Татарчук Alexander Shyichuk Mu. Naushad Nazarii Danyliuk Ivanna Lapchuk

10.1016/j.jwpe.2024.105170

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Citations (2)

Green synthesis of cobalt ferrite using grape extract: the impact of cation distribution and inversion degree on the catalytic activity in the decomposition of hydrogen peroxide

Emergent Materials (2021)

Тетяна Татарчук Nazarii Danyliuk Alexander Shyichuk Volodymyr Kotsyubynsky Ivanna Lapchuk