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Arabian Journal for Science and Engineering

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11.01.2020 | Research Article-Chemistry

Synthesis and Characterization of Ti–Fe Oxide Nanomaterials: Adsorption–Degradation of Methyl Orange Dye

verfasst von: Buzuayehu Abebe, H. C. Ananda Murthy, Yilkal Dessie

Erschienen in: Arabian Journal for Science and Engineering | Ausgabe 6/2020

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Abstract

Organic solvent-free impregnation method was used to synthesize titanium-iron oxides (TIOs) nanomaterial. The physical properties of synthesized TIOs materials were characterized by XRD, SEM–EDX, BET, UV–Vis, and FTIR analytical techniques. The appearance of iron oxide (IO) on SEM image, XRD, and EDX spectra, the redshift on UV–Vis spectra of TIO compared to titanium oxide (TO), and intensity reduction in FTIR spectra proves the good impregnation of IO in TO lattice. The Langmuir and Dubinin–Radushkevich adsorption isotherm test in the dark show the domination of physical adsorption. Furthermore, the Flory–Huggins isotherm model that has \(\Delta G\) = −11.40 kJ/mol and Fowler–Guggenheim model that has \(w\) = −106.5 kJ/mol confirm the spontaneity of the reaction and the presence of adsorbate–adsorbate repulsive interaction, respectively. The passing of the linear Weber–Morris intraparticle adsorption–diffusion plot through the origin and well-fitting of its coefficient of determination (R²) value relative to pseudo-first-order indicates the domination of adsorption–diffusion mechanism. On the methyl orange degradation experiment, as the percentage of IO increases from 4 to 12, its degradation efficiency decreases, i.e., TIO with 4% calcined at 500 °C (TIO-4) has higher degradation efficiency with k values of 0.03025.

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Titel: Synthesis and Characterization of Ti–Fe Oxide Nanomaterials: Adsorption–Degradation of Methyl Orange Dye
verfasst von: Buzuayehu Abebe
H. C. Ananda Murthy
Yilkal Dessie
Publikationsdatum: 11.01.2020
Verlag: Springer Berlin Heidelberg
Erschienen in: Arabian Journal for Science and Engineering / Ausgabe 6/2020
Print ISSN: 2193-567X
Elektronische ISSN: 2191-4281
DOI: https://doi.org/10.1007/s13369-019-04328-1

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