Efficient pollutant degradation by peroxymonosulfate activated by a Co/Mn metal-organic framework

Area of Science:

• Materials Science
• Environmental Chemistry
• Catalysis

Background:

• Advanced materials are crucial for efficient environmental remediation.
• Metal-organic frameworks (MOFs) offer tunable structures for catalytic applications.
• Peroxymonosulfate (PMS) activation is a promising advanced oxidation process for pollutant degradation.

Purpose of the Study:

• To synthesize and characterize a novel bimetallic metal-organic framework (BMOF), BUC-101.
• To evaluate the catalytic performance of BUC-101 for peroxymonosulfate (PMS) activation and rhodamine B (RhB) degradation.
• To investigate the stability, recyclability, and degradation mechanism of the BUC-101/PMS system.

Main Methods:

• One-pot solvothermal synthesis of BUC-101.
• Characterization using single crystal X-ray diffraction (SCXRD), FTIR, XPS, and SEM.
• Evaluation of RhB degradation efficiency using UV-Vis spectrophotometry.
• Assessment of catalyst stability and recyclability over multiple cycles.

Main Results:

• BUC-101 was successfully synthesized and characterized.
• BUC-101 demonstrated excellent catalytic activity for PMS activation, achieving 99.9% RhB degradation.
• The BUC-101/PMS system exhibited good stability and recyclability over five operational runs.
• Proposed mechanisms for PMS activation and RhB degradation were affirmed.

Conclusions:

• BUC-101 is a highly effective and stable bimetallic metal-organic framework catalyst for PMS activation.
• The BUC-101/PMS system offers a promising energy-efficient approach for degrading organic pollutants like RhB.
• Further research into MOF-based catalysts can advance environmental remediation technologies.