Removal of Toxic Chromium Ions in Aqueous Medium Using a New Sorbent Based on rGO@CNT@Fe2O3

A facile hydrothermal route is investigated to prepare a new sorbent based on rGO@CNT@Fe 2 O 3 . The synthesis is easy and does not involve complex chemistry. The as prepared sorbent are characterized by scanning electron microscopy (SEM), X-ray diffraction, Raman spectroscopy, and Fourier transform...

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Published inChemistry Africa Vol. 5; no. 6; pp. 1809 - 1821
Main Authors Fall, Balla, Gaye, Cheikh, Niang, Matar, Alli, Yakubu Adekunle, Diaw, Abdou Karim Diagne, Fall, Modou, Thomas, Sabu, Randriamahazaka, Hyacinthe
Format Journal Article
LanguageEnglish
Published Cham Springer International Publishing 01.12.2022
Subjects
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Inorganic Chemistry
Organometallic Chemistry
Original Article
Removal
Absorption
Chromium ions
Sorbent
Maghemite
Carbon nanomaterials
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Summary:A facile hydrothermal route is investigated to prepare a new sorbent based on rGO@CNT@Fe 2 O 3 . The synthesis is easy and does not involve complex chemistry. The as prepared sorbent are characterized by scanning electron microscopy (SEM), X-ray diffraction, Raman spectroscopy, and Fourier transform infrared spectroscopy (FTIR). Chromium ions adsorption capacity of sorbent reaches 91.7 mg/g at contact time of 240 min at 298 K, and the data is fitted to Freundlich adsorption isotherm model, with second-order kinetics. Further analysis of the mechanism proved that the binding of Cr (VI) to sorbent was mainly a synergistic effect of electrostatic attraction, and ion exchange reduction. Overall, these results shed new light on the search for new composites and revealed the potential practical application of rGO@CNT@Fe 2 O 3 in the removal of heavy metals in solution. Graphical Abstract
ISSN:2522-5758
2522-5766
DOI:10.1007/s42250-022-00499-x