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Carboxymethyl cellulose embedded silica membrane impregnated with ZVI NPs for the catalytic detoxification of methyl orange dye and its kinetic and optimization studies

Usama S, Rauf A, Ahmad Z, ULLAH I, Zhan CH, AlOmar TS, Almasoud N, Saeed A, Iqbal A (2025)

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Publication Type: Journal article

Publication year: 2025

Journal

Book Volume: 330

Article Number: 148162

DOI: 10.1016/j.ijbiomac.2025.148162

Abstract

Polymer composites, carboxymethyl cellulose (CMC) and silica-coated carboxymethyl cellulose (CMCSi) were used as supports for zero-valent iron nanoparticles (Fe⁰ NPs), yielding dip-catalysts represented as CMC@Fe⁰ and CMCSi@Fe⁰. The catalysts were created through the adsorption of Fe³⁺ ions on the polymer matrices, with the subsequent chemical reduction with NaBH4 in aqueous solution. Using FTIR, XRD, and FESEM, structural and morphological topographies were characterized. The composite's catalytic efficiency was evaluated through the degradation of methyl orange (MO) dye. CMCSi@Fe⁰ and CMC@Fe⁰ achieved 89.4 % and 85.0 % degradation in 8 and 13 min. Kinetic modeling disclosed that CMCSi@Fe⁰ followed pseudo-first-order kinetics (R² = 0.921, kapp = 4.44 min⁻¹), where CMC@Fe⁰ best fitted a zero-order (R² = 0.917). The impact of reaction parameters, including temperature, NaBH4 concentration, MO concentration, and pH, was thoroughly explored. At elevated temperature, acidic pH, and higher NaBH4 dosage, optimal degradation occurred. These findings validate that CMC@Fe⁰ and CMCSi@Fe⁰ membranes not only act as effective catalysts for dye detoxification but also hold the potential for water filtration and functional group transformation applications.

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How to cite

APA:

Usama, S., Rauf, A., Ahmad, Z., ULLAH, I., Zhan, C.H., AlOmar, T.S.,... Iqbal, A. (2025). Carboxymethyl cellulose embedded silica membrane impregnated with ZVI NPs for the catalytic detoxification of methyl orange dye and its kinetic and optimization studies. International Journal of Biological Macromolecules, 330. https://doi.org/10.1016/j.ijbiomac.2025.148162

MLA:

Usama, Shahkar, et al. "Carboxymethyl cellulose embedded silica membrane impregnated with ZVI NPs for the catalytic detoxification of methyl orange dye and its kinetic and optimization studies." International Journal of Biological Macromolecules 330 (2025).

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