Synthesis and characterization of a novel bispyridylmethylamine-based copolymer for Co(II) chelation

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED Reactive & Functional Polymers Pub Date : 2025-02-19 DOI:10.1016/j.reactfunctpolym.2025.106203

A. Giove , K. Laatikainen , F. Ibrahim , Y. El Ouardi , A. Sala , S. Hietala , E. Repo , C. Branger

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引用次数: 0

Abstract

Cobalt is a critical element used in several industries with limited natural sources. This study addresses the challenge of its recovery from solutions containing other transition metals, by synthesizing a novel chelating resin based on an original monomer, bis-AMP-MMA. bis-AMP-MMA was prepared through the introduction of a polymerizable methacrylic group into bis(2-pyridylmethyl)amine. The bis-AMP-MMA monomer was proven to form stable 1:1 and 1:2 stoichiometry complexes with Co(II) ions, indicating strong potential for cobalt recovery. To further assess its applicability, bis-AMP-MMA was copolymerized with ethylene glycol dimethacrylate (EGDMA) to prepare an adsorbent highly crosslinked resin, poly(bis-AMP-MMA-co-EGDMA). The new resin was characterized by FTIR, ¹³C CPMAS NMR, SEM and BET method. It showed a surface area of 153.9 m²/g, and demonstrated a maximum Co(II) adsorption capacity,

q_{e}

, of 54.0 mg/g at pH 6.5. It also exhibited selectivity for Co(II) over Ni(II), Cd(II), and Mn(II) ions, with selectivity coefficients,

k

, between 1.13 and 2.09. Additionally, the resin showed good reusability, maintaining 93 % of its efficiency after the first cycle and 65 % after five cycles.

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来源期刊

Reactive & Functional Polymers 工程技术-高分子科学

CiteScore

8.90

自引率

5.90%

发文量

259

审稿时长

27 days

期刊介绍： Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.