This review discusses the degradation efficiency of organic dyes using carbon quantum dots (CQDs) as photocatalysts. CQDs, a type of carbon-based nanomaterial, have gained significant attention due to their unique optical and electronic properties, which make them effective photocatalysts for degrading organic contaminants. The review covers various synthesis techniques for CQDs, including electrochemical, laser ablation, microwave radiation, hydrothermal, and optical properties such as photoluminescence (PL) and quantum confinement effects. It also explores the applications of CQDs in degrading different dyes, highlighting the challenges and opportunities in this field. The review emphasizes the importance of sustainable development and the need for cost-effective, environmentally friendly methods to degrade organic pollutants in water bodies. The synthesis methods, advantages, and disadvantages of CQDs are discussed, along with their photocatalytic performance in degrading specific dyes like methylene blue, naphthol blue black, Congo red, and indigo carmine. The review concludes by outlining future research directions, including the need for more efficient synthesis methods, the use of non-toxic substrates, and the development of scalable production processes for CQDs.This review discusses the degradation efficiency of organic dyes using carbon quantum dots (CQDs) as photocatalysts. CQDs, a type of carbon-based nanomaterial, have gained significant attention due to their unique optical and electronic properties, which make them effective photocatalysts for degrading organic contaminants. The review covers various synthesis techniques for CQDs, including electrochemical, laser ablation, microwave radiation, hydrothermal, and optical properties such as photoluminescence (PL) and quantum confinement effects. It also explores the applications of CQDs in degrading different dyes, highlighting the challenges and opportunities in this field. The review emphasizes the importance of sustainable development and the need for cost-effective, environmentally friendly methods to degrade organic pollutants in water bodies. The synthesis methods, advantages, and disadvantages of CQDs are discussed, along with their photocatalytic performance in degrading specific dyes like methylene blue, naphthol blue black, Congo red, and indigo carmine. The review concludes by outlining future research directions, including the need for more efficient synthesis methods, the use of non-toxic substrates, and the development of scalable production processes for CQDs.