Exploring the Role of Nanostructured Materials in Photocatalytic Degradation of Industrial Pollutants: A Sustainable Chemical Perspective

Abstract

Industrial wastewater contains a wide range of toxic organic pollutants that pose significant threats to environmental and human health, necessitating the development of sustainable and efficient treatment technologies. This study explores the role of nanostructured materials in the photocatalytic degradation of industrial pollutants from a sustainable chemical perspective, emphasizing their potential to replace conventional treatment methods. Nanostructured photocatalysts including pure, doped, and composite metal oxide nanoparticles were synthesized, characterized, and examined for their photocatalytic efficiency under controlled laboratory conditions. Structural, morphological, and optical analyses confirmed successful nanomaterial fabrication with enhanced surface area and improved light-harvesting capabilities. Photocatalytic degradation experiments revealed that doped and composite nanostructures exhibited superior degradation efficiency and reaction kinetics compared to pure nanoparticles, particularly under visible light irradiation. The influence of key operating parameters such as catalyst dosage, pH, irradiation time, and pollutant concentration was analyzed to determine optimal degradation conditions. Reusability studies demonstrated the stability and efficiency of selected catalysts over multiple cycles, reinforcing their practical applicability for continuous treatment systems. The results validate nanostructured materials as promising, eco-friendly photocatalysts for industrial effluent purification, supporting the principles of green chemistry and sustainable environmental management. This research underscores the need for further advancements in nanomaterial modification and reactor design to enhance large-scale applicability and long-term operational efficiency.