Catalytic activity of iron-intercalated montmorillonites in the oxidation of dyes

A. B. Abdikamalova; N. N. Mamataliyev; I. D. Eshmetov; A. M. Kalbaev; O. M. Seytnazarova

doi:10.1117/12.3017754

19 January 2024 Catalytic activity of iron-intercalated montmorillonites in the oxidation of dyes

A. B. Abdikamalova, N. N. Mamataliyev, I. D. Eshmetov, A. M. Kalbaev, O. M. Seytnazarova

Proceedings Volume 12986, Third International Scientific and Practical Symposium on Materials Science and Technology (MST-III 2023); 129860V (2024) https://doi.org/10.1117/12.3017754
Event: Third International Scientific and Practical Symposium on Materials Science and Technology (MST-III 2023), 2023, Dushanbe, Tajikistan

Abstract

This article investigates the photocatalytic bleaching of various dyes using pillared materials as catalysts and ultraviolet light (280-320 nm). It has been determined that different dyes exhibit varying sensitivity to oxidation, likely due to their chemical structures. The methylene blue (MB) dye undergoes significant changes after prolonged exposure to UV light, while the Congo red (CR) dye demonstrates greater stability. The order of resistance to UV irradiation was determined through analysis of the dye spectra. Detailed examination of the dye degradation dynamics revealed that CR and MB are most sensitive to hydrogen peroxide oxidation in the system with pillared bentonites. The bleaching process is enhanced with an increasing catalyst concentration. Factors influencing the degree of dye degradation include the chemical structure, size, shape, and potential interaction with the surface of the pillared bentonite. Ultimately, pillared materials are emerging as promising catalysts for the photocatalytic bleaching of dyes in wastewater.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

A. B. Abdikamalova, N. N. Mamataliyev, I. D. Eshmetov, A. M. Kalbaev, and O. M. Seytnazarova "Catalytic activity of iron-intercalated montmorillonites in the oxidation of dyes", Proc. SPIE 12986, Third International Scientific and Practical Symposium on Materials Science and Technology (MST-III 2023), 129860V (19 January 2024); https://doi.org/10.1117/12.3017754

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KEYWORDS

Dyes

Oxidation

Chromium

Ultraviolet radiation

Absorbance

Adsorption

Resistance

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