Phoenix dactylifera mediated green synthesis of Mn doped ZnO nanoparticles and its adsorption performance for methyl orange dye removal: A comparative study

A comprehensive study on Phoenix dactylifera mediated green synthesis of ZnO, and different content (2%, 4%, 6%, 10%) of Mn doped ZnO nanoparticles (Mn@ZnO-NPs) were performed to evaluate the elimination of dispersing acid dye methyl orange (MO) from aqueous solutions. The as-synthesized ZnO and Mn@...

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Veröffentlicht in:Materials chemistry and physics 2022-07, Vol.286, p.126173, Article 126173
Hauptverfasser: Raza, Azam, Shoeb, Mohd, Mashkoor, Fouzia, Rahaman, Sabiar, Mobin, Mohammad, Jeong, Changyoon, Yusuf Ansari, M., Ahmad, Absar
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container_start_page 126173
container_title Materials chemistry and physics
container_volume 286
creator Raza, Azam
Shoeb, Mohd
Mashkoor, Fouzia
Rahaman, Sabiar
Mobin, Mohammad
Jeong, Changyoon
Yusuf Ansari, M.
Ahmad, Absar
description A comprehensive study on Phoenix dactylifera mediated green synthesis of ZnO, and different content (2%, 4%, 6%, 10%) of Mn doped ZnO nanoparticles (Mn@ZnO-NPs) were performed to evaluate the elimination of dispersing acid dye methyl orange (MO) from aqueous solutions. The as-synthesized ZnO and Mn@ZnO-NPs adsorbents were characterized by XRD, FT-IR, UV-VIS spectrophotometer, TEM, and point of zero charges (pHpzc). In accordance with the sorption capacity of the adsorbents, the 10% Mn@ZnO-NPs shows the optimal adsorption of MO dye. The adsorption results perfectly matched the pseudo-2nd order kinetic model and Freundlich adsorption isotherm. The maximum monolayer adsorption capacity were recorded to be 87.72, 90.09, 91.74, 92.59, 96.15 mg/g for ZnO and 2%, 4%, 6%, and 10% Mn@ZnO-NPs, respectively at the pH 5, adsorbent dose 1.5 g/L, and 303 K. The thermodynamic data of all the systems confirms that the adsorption of MO was feasible and endothermic in nature. Regeneration study showed that after four successive ad-/de-sorption cycles, the absorption potential of ZnO and 10% Mn@ ZnO was not reduced more than 15%. The collective benefits of easy preparation, non-toxic and good removal efficiency towards anionic dye make Mn@ZnO-NPs as a novel adsorbent. •ZnO and Mn doped ZnO nanoparticles were successfully synthesis by green method.•Freundlich adsorption isotherm was best described the adsorption of methyl orange.•The adsorption process follows pseudo-2nd order kinetic model.•Decontamination was endothermic in nature.
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subjects Acid dyes
Adsorbents
Adsorption
Aqueous solutions
Comparative studies
Dyes
Manganese
Metal oxide
Methyl orange
Mn doping
Nanoparticle
Nanoparticles
Sorption
Synthesis
Zinc oxide
ZnO
title Phoenix dactylifera mediated green synthesis of Mn doped ZnO nanoparticles and its adsorption performance for methyl orange dye removal: A comparative study
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