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Efficiency of Hybrid Process of Coagulation/Flocculation Followed by Membrane Filtration for the Treatment of Synthetic Vegetable Oil Refinery Wastewater Read chapter Read first chapter

2021 | OriginalPaper | Chapter

Adsorption Efficiency of Graphene Oxide Toward Cyanine Dyes with Different Alkyl Chain Lengths

Authors : Abeer Elsherbiny, Ali Gemeay, Mohamed Salem

Published in: Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions (2nd Edition)

Publisher: Springer International Publishing

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Abstract

The current study dealt with the preparation and characterization of graphene oxide (GO) nanosheets. The adsorption process of three cyanine dyes with different alkyl chain lengths (named R5, R7, and R10) on GO nanosheets was achieved by the batch method. The impact of the alkyl chain length of the dye molecule on the adsorption process was investigated. It was noticed that the adsorption efficiency increased proportionally with the increase in the chain length. The adsorption obeyed both of pseudo-second-order kinetics and the Langmuir isotherm model. The intraparticle and film diffusions were involved. The thermodynamic parameters showed that the adsorption was spontaneous and endothermic. In addition, the Gibbs energy, ΔGads declined as the length of the alkyl chain of the dye, was increased, and a commensuration of more favorable adsorption takes place at longer chain length. The adsorption of these dyes by GO was attributed to the electrostatic and π − π interactions as confirmed by the obtained infrared Fourier transform (FT-IR) results.

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Metadata
Title
Adsorption Efficiency of Graphene Oxide Toward Cyanine Dyes with Different Alkyl Chain Lengths
Authors
Abeer Elsherbiny
Ali Gemeay
Mohamed Salem
Copyright Year
2021
Book
Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions (2nd Edition)

Print ISBN: 978-3-030-51209-5

Electronic ISBN: 978-3-030-51210-1

Copyright Year: 2021

DOI
https://doi.org/10.1007/978-3-030-51210-1_10