Advances in photodegradation of organic pollutants using polymer supported Fenton catalysts

Abstract

Photodegradation of organic pollutants in wastewater is an ideal process for reducing environmental pollution, as it harnesses light energy to break down harmful compounds into safer byproducts. Supported catalysts play a crucial role in this process as they increase the stability and reusability of the photocatalysts, enhance light absorption, and improve degradation efficiency by providing a larger surface area for the reaction. This certainly improves the sustainability and effectiveness of the contaminated water treatment. This review article provides a comprehensive overview of various polymer-supported Fenton catalysts for the photodegradation of organic compounds in wastewater treatment. The discussion is structured based on the type of polymer such as polystyrene, polyacrylonitrile, resins, Nafion and other miscellaneous polymers employed as suitable solid support for Fenton catalysts. Key aspects of each category of these supported catalysts are explored, including their preparation methods, structural characteristics, and catalytic performance in degrading pollutants under different conditions. The review also focuses on the recent challenges and gaps in this area of research in terms of catalyst stability, reusability, and efficiency under varying environmental conditions. By consolidating the existing knowledge on the title topic, this article serves as a valuable resource for researchers and practitioners, offering insights into the potential of polymer-supported Fenton catalysts and directing toward more effective and sustainable photocatalytic systems for wastewater treatment.