From nano- to macroarchitectures: designing and constructing MOF-derived porous materials for persulfate-based advanced oxidation processes

Xiao, Chengming; Guo, Xin; Li, Jiansheng

doi:10.1039/d4cc00433g

Chem. Commun.

2024

DOI: 10.1039/d4cc00433g

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From nano- to macroarchitectures: designing and constructing MOF-derived porous materials for persulfate-based advanced oxidation processes

Chengming Xiao,

Xin Guo,

Jiansheng Li

Abstract: Persulfate-based advanced oxidation processes (PS-AOPs) have gained significant attention as an effective approach for the elimination of emerging organic contaminants (EOCs) in water treatment. Metal-organic frameworks (MOFs) and their derivatives...

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Cited by 2 publications

References 210 publications

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Shaping Phenolic Resin-Coated ZIF-67 to Millimeter-Scale Co/N Carbon Beads for Efficient Peroxymonosulfate Activation

Yan,

Yao,

Xiao

et al. 2024

Molecules

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Catalytic performance decline is a general issue when shaping fine powder into macroscale catalysts (e.g., beads, fiber, pellets). To address this challenge, a phenolic resin-assisted strategy was proposed to prepare porous Co/N carbon beads (ZACBs) at millimeter scale via the phase inversion method followed by confined pyrolysis. Specially, p-aminophenol–formaldehyde (AF) resin-coated zeolitic imidazolate framework (ZIF-67) nanoparticles were introduced to polyacrylonitrile (PAN) solution before pyrolysis. The thermosetting of the coated AF improved the interface compatibility between the ZIF-67 and PAN matrix, inhibiting the shrinkage of ZIF-67 particles, thus significantly improving the void structure of ZIF-67 and the dispersion of active species. The obtained ZACBs exhibited a 99.9% removal rate of tetracycline (TC) within 120 min, with a rate constant of 0.069 min−1 (2.3 times of ZIF-67/PAN carbon beads). The quenching experiments and electron paramagnetic resonance (EPR) tests showed that radicals dominated the reaction. This work provides new insight into the fabrication of high-performance MOF catalysts with outstanding recycling properties, which may promote the use of MOF powder in more practical applications.

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Shaping Phenolic Resin-Coated ZIF-67 to Millimeter-Scale Co/N Carbon Beads for Efficient Peroxymonosulfate Activation

Yan,

Yao,

Xiao

et al. 2024

Molecules

View full text Add to dashboard Cite

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Cobalt-Based MOF Material Activates Persulfate to Degrade Residual Ciprofloxacin

Luo,

2024

Water

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Antibiotic residues in water environments have garnered widespread attention. Metal-organic frameworks (MOFs) have found extensive applications in water purification. This study investigates the use of a cobalt-based MOF material, zeolitic imidazolate framework-67(ZIF-67)(Co), for activating persulfate (PMS) to remove residual antibiotic ciprofloxacin (CIP) from aqueous environments. The main findings are as follows: ZIF-67(Co) exhibits insignificant adsorption capacity for CIP, and PMS alone does not degrade CIP effectively. However, ZIF-67(Co)-activated PMS demonstrates the efficient degradation of CIP, following pseudo-second-order reaction kinetics. Under optimal conditions of the catalyst dosage (15 mg) and PMS concentration (1.0 mM), the removal efficiency reaches 88% after 60 min. Comparative analysis of CIP degradation at different initial pH levels shows that the highest efficiency is reached under mildly acidic conditions, with an 86% removal rate achieved within 60 min under these conditions. Investigation into the impact of various inorganic anions on the ZIF-67(Co)-catalyzed PMS degradation of CIP reveals significant inhibition by chloride ions (Cl−), whereas nitrate (NO3-) and sulfate (SO42-) ions have minor effects on the degradation efficiency. The system demonstrates a consistent performance across different water matrices, highlighting ZIF-67(Co)/PMS as effective for ciprofloxacin removal in environmental waters. This study provides technical support for the efficient removal of antibiotic residues.

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From nano- to macroarchitectures: designing and constructing MOF-derived porous materials for persulfate-based advanced oxidation processes

Abstract: Persulfate-based advanced oxidation processes (PS-AOPs) have gained significant attention as an effective approach for the elimination of emerging organic contaminants (EOCs) in water treatment. Metal-organic frameworks (MOFs) and their derivatives...

Cited by 2 publications

References 210 publications

Shaping Phenolic Resin-Coated ZIF-67 to Millimeter-Scale Co/N Carbon Beads for Efficient Peroxymonosulfate Activation

Shaping Phenolic Resin-Coated ZIF-67 to Millimeter-Scale Co/N Carbon Beads for Efficient Peroxymonosulfate Activation

Cobalt-Based MOF Material Activates Persulfate to Degrade Residual Ciprofloxacin

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