Work

Enhanced tetracycline adsorption in aqueous samples via solvent-free in situ growth of ZIF-8 on MAF-6-derived carbon

Year: 2025

Type: article

Abstract: In this work, we present a novel route for preparing a MOF-derived composite, CMAF-6@ZIF-8, specifically designed for the removal of emerging contaminants from water. The composite was synthesized via a solvent-free in situ growth of ZIF-8 (Zeolitic Imidazolate Framework-8) directly on a porous carbon matrix obtained by thermal conversion of MAF-6 (Metal Azolate Framework-6). Notably, the ZnO nanoparticles formed during carbonization were strategically reused as reactive precursors, enabling ZIF-8 crystallization without the need for external metal salts or solvents. The optimized material exhibited a high surface area (903 m 2 g −1 ) and a micro/mesoporous structure, that facilitated rapid diffusion of target molecules. The composite demonstrated outstanding adsorption performance for tetracycline, achieving a maximum adsorption capacity of 769 mg g −1 and a kinetic rate constant of 0.00205 g mg −1 min −1 , both values being among the highest reported for ZIF-8-based materials. Furthermore, the material showed excellent reusability over five cycles. This sustainable, high-performance adsorbent offers a promising solution for addressing the global challenge of antibiotic contamination in water systems.

Source: Journal of Water Process Engineering

DOI: 10.1016/j.jwpe.2025.108575

Authors: Daniel Roberto Sáenz-García, Gemma Turnes Palomino, Luz O. Leal, Carlos Palomino Cabello

Institutions: Centro de Investigación en Materiales Avanzados, Universitat de les Illes Balears

Language: English

Topic: Adsorption and biosorption for pollutant removal

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: hybrid

Estimated APC paid: $3,350