Abstract <p>Carbon dots (CDs) were synthesized using a simple stirred-assisted method, employing neem leaves as an abundant natural source. The produced carbon dot combined with TiO₂ is used as a photocatalyst for the degradation of Rhodamine B (RhB) with the incidence of sunlight. These carbon dots exhibited a notable quantum yield of 27.45%, with excitation occurring at a wavelength of 340 nm. The overall shape of the CDs is spherical and has a homogeneous distribution; the diameter of each CD/TiO₂ is estimated to be 5–10 nm. In conclusion, we showed that the produced CDs were capable of performing very well as a photocatalyst for the degradation of the RhB. CD/TiO₂ demonstrates a remarkable 97.82% efficiency in degrading RhB under sunlight exposure. These findings suggest that CD/TiO₂ serves as an effective catalyst for the degradation of organic dyes commonly present in wastewater.</p>