Efficient Removal of Heavy Metals and Organic Dyes from Aqueous Solutions Using Manganese-Associated Graphene Oxide: A Batch Adsorption Study
| Authors | Amit Kumar Kundu1,2 , Shib Shankar Biswas1,3, Hari Shankar Biswas1 , Dilip K. Maiti4 |
| Affiliations |
1Department of Chemistry, Surendranath College, Kolkata-700009, India 2Department of Chemistry, Sripat Singh College, Jiaganj, Murshidabad, Pin: 742123, India 3Department of Physics, Surendranath College, Kolkata-700009, India 4Department of Chemistry, University of Calcutta, University College of Science, Kolkata-700009, India |
| Е-mail | harishankarb7@gmail.com |
| Issue | Volume 17, Year 2025, Number 5 |
| Dates | Received 18 August 2025; revised manuscript received 21 October 2025; published online 30 October 2025 |
| Citation | Amit Kumar Kundu, Shib Shankar Biswas, Hari Shankar Biswas, et al., J. Nano- Electron. Phys. 17 No 5, 05030 (2025) |
| DOI | https://doi.org/10.21272/jnep.17(5).05030 |
| PACS Number(s) | 62.23.Kn, 81.05.ue, 92.40.kc |
| Keywords | Manganese-associated graphene oxide, Water contamination, Nanosheet, Adsorption (9) , Heavy metals, Environmental remediation. |
| Annotation |
This study investigates the synthesis and application of manganese-associated graphene oxide (Mn-GO) nanosheets for efficient water contamination removal. Mn-GO nanosheets were prepared by integrating manganese ions onto graphene oxide (GO) via a modified chemical reduction method, enhancing the material’s adsorptive and catalytic properties. The objective was to evaluate Mn-GO’s ability to remove heavy metals (e.g., lead, cadmium), organic dyes (e.g., methylene blue), and other contaminants from aqueous solutions by batch adsorption method. Characterization using X-ray diffraction (XRD), scanning electron microscopy (SEM), and BET analysis confirmed Mn-GO’s high surface area, porosity, and structural integrity, key factors contributing to its superior adsorption capacity. Adsorption experiments demonstrated that Mn-GO exhibited a high removal efficiency, achieving up to 95% adsorption for certain contaminants under optimized conditions. Kinetic and isotherm models indicated favorable adsorption processes, with Mn ions providing additional catalytic effects, enhancing contaminant breakdown and binding. Mn-GO nanosheets also showed excellent stability and reusability over multiple adsorption-desorption cycles, making them a sustainable option for water purification. This study concludes that Mn-GO nanosheets offer a promising, scalable solution for efficient water decontamination, with potential applications in environmental management and industrial wastewater treatment. Further research will focus on optimizing synthesis and examining Mn-GO performance with real wastewater samples for broader practical applications. |
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List of References |
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