Photocatalytic Activity and Environmental Remediation Efficiency of Novel Engineered Materials under Visible Light Irradiation

Abstract

The persistence of organic pollutants and emerging contaminants in air and water systems presents a major environmental challenge, particularly in rapidly industrializing regions. Photocatalytic materials have gained significant attention as sustainable solutions for environmental remediation due to their ability to degrade pollutants using solar energy. However, conventional photocatalysts are often limited by poor visible-light responsiveness and rapid charge recombination. This study investigates the photocatalytic activity and environmental remediation efficiency of novel engineered materials designed for enhanced visible-light activation. Modified semiconductor-based photocatalysts were synthesized through controlled doping and surface engineering strategies to improve light absorption and charge separation. Structural, optical, and surface properties were systematically characterized, followed by evaluation of photocatalytic degradation efficiency against representative organic contaminants under visible light irradiation. Reaction kinetics, stability, and reusability were analyzed to assess long-term performance. Experimental findings were further interpreted in the context of large-scale environmental remediation feasibility. Results demonstrate that engineered photocatalysts exhibit significantly enhanced degradation efficiency, improved kinetic rates, and strong operational stability. The study provides a comprehensive framework for developing next-generation photocatalytic materials for sustainable environmental remediation applications.