Related Experiment Video
Updated: May 13, 2025

Author Spotlight: Functionalizing Metal-Organic Frameworks: Advancements, Challenges, and the Power of Post-Synthetic Ligand Exchange
Published on: June 23, 2023
Functional group modulation of Fe-1,3,5-benzenetricarboxylic acid materials: Enhancing peroxymonosulfate activation
Shuai Xia1, Dandi Cai1, Yuzhi Liu1
1Key Lab of Groundwater Resources and Environment (Ministry of Education), Jilin University, 2519 Jiefang Road, Changchun 130021, PR China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, 2519 Jiefang Road, Changchun 130021, PR China.
None:
This work aims to design peroxymonosulfate (PMS) catalytic materials that exhibit both high catalytic activity and ease of preparation. Fe-1,3,5-benzenetricarboxylic acid (Fe-BTC), known for its environmentally friendly and convenient synthesis, was selected as the template. A series of derived materials were developed under green and mild conditions using a functional group modulation strategy, in which one -COOH group in BTC was substituted with -NO2, -NH2, pyridine nitrogen, or -H. Among these, the amino-modified Fe-BTC (Fe-IPA-NH2), derived via -NH2 substitution, demonstrated a significant improvement in catalytic performance compared to Fe-BTC. Fe-IPA-NH2 effectively activated PMS to degrade 99 % of metronidazole (MNZ) within 60 min. Through comprehensive characterization of the physicochemical properties of the synthesized materials, the influence of functional group modulation on the catalyst's structure-activity relationship was elucidated. The substitution of -COOH with -NH2 enhanced PMS activation by promoting both mass transfer and electron transfer processes. Liquid chromatography-mass spectrometry (LC-MS) analysis revealed the degradation pathways of MNZ, which included hydroxyethyl cleavage, methyl oxidation, N-denitration, and ring-opening reactions. Toxicity assessment indicated that the Fe-IPA-NH2/PMS system holds promise for MNZ detoxification. Electron paramagnetic resonance spectroscopy and quenching experiments identified singlet oxygen (1O2) as the dominant reactive species in the Fe-IPA-NH2/PMS system, and a possible catalytic mechanism was proposed. Additionally, Fe-IPA-NH2 retained the key advantage of Fe-BTC-its facile and eco-friendly synthesis. When Fe-IPA-NH2 was incorporated into a ceramic membrane via an in situ assembly process, the resulting membrane catalytic reactor exhibited effective performance in water treatment. This study offers a compelling strategy for the development of iron-based metal-organic complexes that integrate eco-friendly synthesis, enhanced PMS catalytic activity, and versatile application potential.
More Related Videos
08:12Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
Published on: September 5, 2018
12:05Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia
Published on: October 10, 2013
Related Concept Videos
Electrophilic Aromatic Substitution: Sulfonation of Benzene
ortho–para-Directing Activators: –CH3, –OH, –⁠NH2, –OCH3
Radical Oxidation of Allylic and Benzylic Alcohols
Carboxylic Acids to Esters: Acid-Catalyzed (Fischer) Esterification Mechanism
meta-Directing Deactivators: –NO2, –CN, –CHO, –⁠CO2R, –COR, –CO2H
Acid-Catalyzed Ring-Opening of Epoxides