<p>Visible photocatalytic oxidation has emerged as a promising approach for sustainable environmental remediation, leveraging sunlight to drive the degradation of organic pollutants. This review examines the principles and mechanisms underlying visible light photocatalysis, focusing on the development of advanced photocatalytic materials that enhance efficiency under solar irradiation. Key strategies, including the design of heterojunctions, doping with metal and nonmetal elements, and the synthesis of hybrid materials, are explored to improve photocatalytic activity and broaden the light absorption spectrum. The application of visible light photocatalysts in the degradation of various environmental contaminants such as VOCs is critically analyzed, highlighting their potential in addressing environmental challenges. Furthermore, this review discusses the scalability and practical implementation of visible photocatalytic systems, underscoring their role in promoting sustainable practices and achieving clean water and air quality goals. The findings suggest that visible photocatalytic oxidation is a vital tool for advancing sustainable environmental remediation technologies.</p>