A Novel Functionalized Metal-Organic Framework for Sensitive Detection and Efficient Removal of Manganese Ions from Drinking Water | ||
| Egyptian Journal of Chemistry | ||
| Volume 68, Issue 13, December 2025, Pages 15-28 PDF (1.36 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejchem.2025.380150.11669 | ||
| Authors | ||
| Mohamed Hosni* 1; Reda Abdelaal2; Ahmed Shahat3; Islam El-Sewify4 | ||
| 1Center for Applied Research on the Environment and Sustainability (CARES), The American University in Cairo | ||
| 2Department of Chemistry, Faculty of Science, Suez University,43518, Suez, Egypt | ||
| 3Chemistry Department, Faculty of Science, Suez University, Egypt | ||
| 4Department of Chemistry, Faculty of Science, Ain Shams University, 11566 Cairo, Abbassia, Egypt | ||
| Abstract | ||
| Manganese nano sensor (MNS) derived from Al-NH2-MIL-53 (ANM-53) via Schiff base condensation with 1-hydroxy-2-naphthaldehyde exhibits exceptional sensing capabilities for Mn2+ ions in aqueous media. This study presents a comprehensive investigation into the synthesis, characterization, and application of MNS as both a chemical sensor and adsorbent for manganese ions, which are environmentally concerning contaminants in drinking water systems. The functionalized MOF demonstrates remarkable sensitivity with a detection limit of 0.61 ppb, outperforming many conventional sensing methodologies. The sensing mechanism is mediated by coordination interactions between the Schiff base moieties and Mn2+ ions, resulting in measurable spectroscopic shifts. FTIR, SEM, TEM, XRD, and BET analyses confirm the successful functionalization while maintaining the structural integrity and porosity of the parent framework. The MNS material simultaneously functions as an effective adsorbent, removing up to 92% of Mn2+ ions from aqueous solutions within 2 minutes under optimized conditions. This dual-functional nanomaterial presents a promising platform for both monitoring and remediating manganese contamination in water resources, addressing a critical environmental and public health concern with potential applications in portable water quality monitoring devices. | ||
| Keywords | ||
| Metal-organic framework; Manganese detection; Chemical sensor; Water treatment; Schiff base functionalization; Environmental monitoring; Toxic metal remediation | ||
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