ItemArticle

Amine-functionalized MIL-101(Fe)-NH2@ZIF-8 composite for efficient adsorption of Pb2+ ions

Title
Amine-functionalized MIL-101(Fe)-NH2@ZIF-8 composite for efficient adsorption of Pb2+ ions
Creator
Loganathan, Pushparaj; Ramachandra, Madhushree; Priyadarshini, Marimuthu; Manickam, Sivakumar; Sunajadevi, Kalathiparambil Rajendra Pai
Description
Heavy metal contamination of water resources poses a serious environmental and public health threat, necessitating the development of efficient and selective adsorbent materials. In this study, a hierarchical MIL-101(Fe)-NH2@ZIF-8 composite was successfully fabricated via an interfacial growth strategy, integrating amine-functionalized MIL-101(Fe)-NH2 and ZIF-8 to achieve a synergistic micro-mesoporous architecture with accessible functional sites. The composite was thoroughly characterized by FTIR, PXRD, TGA, BET, and SEM-EDX analyses, with elemental mapping confirming the structural integration and resulting in enhanced porosity, thermal stability, and functional group availability. The material exhibited a remarkable Pb2+ adsorption efficiency of 94.9 % and a maximum adsorption capacity of 297 mg/g, significantly superior to the adsorption of other metal ions (Cd2+, Cu2+, Ni2+, and Cr2+). Atomic absorption spectroscopy (AAS) validated the exceptional selectivity of MIL-101(Fe)-NH2@ZIF-8 for Pb2+ ions. The enhanced performance is attributed to the synergistic effect of accessible amine (?NH2) functionalities, Fe?O coordination sites, and hierarchical porosity enabling strong metal binding and rapid diffusion. These findings highlight the exceptional potential of MIL-101(Fe)-NH2@ZIF-8 as an advanced adsorbent for Pb2+ removal from water, offering a practical pathway to address critical environmental challenges and promote sustainable human health and ecological protection. 2025 Elsevier B.V.
Source
Microchemical Journal;Volume;220;Issue;;Article No.;116580;
Date
01-01-2026
Publisher
Elsevier Inc.
Subject
Atomic absorption spectroscopy; Heavy metal removal; Lead adsorption; Metal-organic frameworks; MIL-101(Fe)-NH2@ZIF-8 composite
Coverage
Loganathan P., Department of Chemistry, Christ University, Karnataka, Bengaluru, 560029, India; Ramachandra M., Department of Chemistry, Christ University, Karnataka, Bengaluru, 560029, India; Priyadarshini M., Tamil Nadu Pollution Control Board, District Environmental Laboratory, Tamil Nadu, Chengalpattu, 603203, India; Manickam S., Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan, BE1410, Brunei Darussalam; Sunajadevi K.R.P., Department of Chemistry, Christ University, Karnataka, Bengaluru, 560029, India
Rights
Restricted Access; Hardcopy may be available in the library
Relation
ISSN: 0026265X; CODEN: MICJA
Format
online
Language
English
Type
Article

Citation

Loganathan, Pushparaj; Ramachandra, Madhushree; Priyadarshini, Marimuthu; Manickam, Sivakumar; Sunajadevi, Kalathiparambil Rajendra Pai, “Amine-functionalized MIL-101(Fe)-NH2@ZIF-8 composite for efficient adsorption of Pb2+ ions,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 18, 2026, https://archives.christuniversity.in/items/show/22394.

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