Breakthrough in Photocatalytic Removal of Antibiotics Offers Sustainable Solution for Water Remediation

Researchers at Hebei University of Technology in Tianjin, People's Republic of China, have made a significant breakthrough in developing photocatalysts with enhanced antibiotic removal efficiency and practical applicability. The novel bimetallic catalysts, prepared via an in-situ growth technique, exhibit improved adsorption properties, photoelectric response, and removal efficiency of cefalexin (CFX) antibiotics. The study demonstrates the potential of these catalysts to continuously photo-catalyze the removal of CFX with a simple and complete recycling strategy, showcasing high recycling efficiency.

Key Takeaways:

• The researchers employed an in-situ growth technique to incorporate manganese ferrate nanomaterials onto bismuth oxychloride nanoflowers (MnFeO@BiOCl) to construct bimetallic active sites for the photocatalytic degradation of CFX.
• The incorporation of MnFeO significantly boosts the adsorption properties, photoelectric response, and CFX removal efficiency (from 5.03 mg/g to 10.27 mg/g) by BiOCl.
• XPS analysis reveals that the bimetallic structure facilitates photogenerated electron transfer via Mn-O-Bi coordination, delaying the electron-hole recombination.
• The study demonstrates that MnFeO@BiOCl can continuously photo-catalyze the removal of CFX with a simple and complete recycling strategy, showcasing high recycling efficiency.
• The proposed strategy is envisaged to be a promising approach for the photocatalytic removal of antibiotics, offering a sustainable solution for remediation of water.
• The researchers posit that bimetallic catalysts prepared via heterojunction structures can achieve efficient CFX antibiotic removal while preserving excellent reusability.

Statistics:

• The incorporation of MnFeO increases the removal efficiency of CFX from 5.03 mg/g to 10.27 mg/g.
• The bimetallic structure facilitates photogenerated electron transfer via Mn-O-Bi coordination, delaying the electron-hole recombination.
• The recycling efficiency of MnFeO@BiOCl is 95%.
• The study demonstrates the potential of these catalysts to continuously photo-catalyze the removal of CFX with a simple and complete recycling strategy.

Sources:

• Innovative catalytic approaches in fabricating bimetallic heterostructures for remediation of antibiotic-polluted water: Mechanistic insights and application prospects. Journal of Environmental Management, 2025;384:125581.
• Hebei University of Technology, Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering.
• Journal of Environmental Management, Academic Press Ltd- Elsevier Science Ltd, 24-28 Oval Rd, London NW1 7DX, England.