This book, Photocatalytic Degradation of Dyes: Unveiling the Green Solution" aims to comprehensively explore the world of photocatalysis and its application in the remediation of dye-contaminated water. It covers the fundamental principles, diverse photocatalytic materials, reactor systems, case studies, challenges, and future prospects, offering an extensive resource for researchers, engineers, policymakers, and industries striving to address one of the most pressing environmental challenges of our time.