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Highly Efficient Removal for Methylene Blue and Cu(2+) onto UiO-66 Metal–Organic Framework/Carboxylated Graphene Oxide-Incorporated Sodium Alginate Beads

[Image: see text] Herein, we report a new metal–organic framework (MOF)-based composite beads adsorbent made via incorporating UiO-66 MOF, carboxylated graphene oxide (GOCOOH) into sodium alginate for efficient removal of methylene blue dye, and Cu(2+) ions. The successful fabrication of the synthes...

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Detalles Bibliográficos
Autores principales: Eltaweil, Abdelazeem S., Mamdouh, Injy M., Abd El-Monaem, Eman M., El-Subruiti, Gehan M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8444308/
https://www.ncbi.nlm.nih.gov/pubmed/34549149
http://dx.doi.org/10.1021/acsomega.1c03479
Descripción
Sumario:[Image: see text] Herein, we report a new metal–organic framework (MOF)-based composite beads adsorbent made via incorporating UiO-66 MOF, carboxylated graphene oxide (GOCOOH) into sodium alginate for efficient removal of methylene blue dye, and Cu(2+) ions. The successful fabrication of the synthesized UiO-66/GOCOOH@SA composite beads was confirmed by means of X-ray diffraction, Fourier transform infrared, scanning electron microscopy, zeta potential, X-ray photoelectron spectroscopy analysis, and thermogravimetric analysis and BET measurement. The incorporation of both UiO-66 and GOCOOH into SA beads greatly increased their adsorption efficiency for the removal of both MB and Cu(2+) with maximum adsorption capacities of 490.72 and 343.49 mg/g, respectively. The removal process of both MB and Cu(2+) follows the pseudo-second-order model and Freundlich isotherm model. A plausible adsorption mechanism was discussed in detail. Regeneration tests clarified that the removal efficiencies toward both MB and Cu(2+) remained higher than 87% after five cycles. These results reveal the potentiality of UiO-66/GOCOOH@SA beads as an excellent adsorbent.