Highly efficient Co3O4/GO adsorbent recycled from spent Lithium-Ion Batteries toward cationic dye from aqueous solutions
Thabet, I., Ahmed, A., Ali, G., Bakr, Z., Hamed, A., Nagiub, A. (2025). Highly efficient Co3O4/GO adsorbent recycled from spent Lithium-Ion Batteries toward cationic dye from aqueous solutions. EKB Journal Management System, (), -. doi: 10.21608/ejchem.2025.364725.11379
Islam K. M. Thabet; Abdelaal S. A. Ahmed; Gomaa A.M. Ali; Zinab H. Bakr; A. M. Hamed; Adham Mohamed Nagiub. "Highly efficient Co3O4/GO adsorbent recycled from spent Lithium-Ion Batteries toward cationic dye from aqueous solutions". EKB Journal Management System, , , 2025, -. doi: 10.21608/ejchem.2025.364725.11379
Thabet, I., Ahmed, A., Ali, G., Bakr, Z., Hamed, A., Nagiub, A. (2025). 'Highly efficient Co3O4/GO adsorbent recycled from spent Lithium-Ion Batteries toward cationic dye from aqueous solutions', EKB Journal Management System, (), pp. -. doi: 10.21608/ejchem.2025.364725.11379
Thabet, I., Ahmed, A., Ali, G., Bakr, Z., Hamed, A., Nagiub, A. Highly efficient Co3O4/GO adsorbent recycled from spent Lithium-Ion Batteries toward cationic dye from aqueous solutions. EKB Journal Management System, 2025; (): -. doi: 10.21608/ejchem.2025.364725.11379

Highly efficient Co3O4/GO adsorbent recycled from spent Lithium-Ion Batteries toward cationic dye from aqueous solutions

Egyptian Journal of Chemistry
Articles in Press, Accepted Manuscript, Available Online from 03 July 2025  XML
Document Type: Original Article
DOI: 10.21608/ejchem.2025.364725.11379
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Authors
Islam K. M. Thabet1; Abdelaal S. A. Ahmed email orcid 1; Gomaa A.M. Ali2; Zinab H. Bakr3; A. M. Hamed4; Adham Mohamed Nagiuborcid 5
1Chemistry Department, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
2Chemistry Department, Faculty of Science, Al-Azhar University, 71524, Assiut, Eg
3Assuit, Physics Department, Faculty of Science, Assiut University, Assiut, 71516, Egypt
4Department of Chemistry, Faculty of Science, AL-Azhar University (Assuit Branch), Egypt
5Department of Chemistry, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
Abstract
In this study, the hydrothermal approach was used to extract cobalt oxide (Co3O4) nanoparticles and graphene oxide (GO), respectively from the cathode and the anode of spent lithium-ion batteries (LiBs). To gathering the benefits of both Co3O4 and GO, the Co3O4/GO nanocomposite was prepared via hydrothermal method. The prepared materials have been characterized by Fourier transform infrared (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and nitrogen adsorption-desorption techniques. The characteristic analysis conforms the successful preparation of Co3O4/GO nanocomposite with a BET surface area of 40.42 m2/g. Due to high porous structure, and the presence of GO layers, the prepared Co3O4/GO nanocomposite displayed high adsorption capacity toward methylene blue (MB) from the aqueous solution. Various adsorption parameters affecting the overall adsorption efficiency such as pH, adsorbent doses, contact time, and initial MB dye concentrations have been systematically investigated. The highest removal efficiency of MB dye onto the Co3O4 and Co3O4/GO was achieved at alkaline conditions (pH ≈8.5) with a removal efficiency of 94% and 99%, respectively. The kinetic analysis confirmed that the adsorption of MB dye onto Co3O4 and Co3O4/GO adsorbents fitted with the pseudo-second order model. The isotherm results indicated that the adsorption of MB dye Co3O4 and the Co3O4/GO nanocomposite obeyed the Langmuir isotherm model, and the estimated maximum adsorption capacity of the Co3O4 and the Co3O4/GO nanocomposite are 64.94 and 68.97 mg/g, respectively. This study opens a way for converting waste LiBs components into valuable nanomaterials to be applied for water treatment application.
Keywords
Recycling; metal oxides; lithium-ion batteries (LiBs); Graphene oxide; hydrothermal method; organic pollutants
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