▎ 摘　　要

CdSe Quantum dots (QDs) exhibit relatively high photocatalytic abilities with its unique properties, but the aggregation and photocorrosion have blocked its further application. Therefore, for arriving at a solution, reduced graphene oxides (rGO) are chosen to fabricate new QDs CdSe-based photocatalytic systems. In this paper, CdSe-rGO composites were synthetised via a facile one-step hydrothermal method, in which the formation of CdSe crystallization and GO reduction occur simultaneously. We investigated the catalytic activity of the catalyst via photocatalytic degradation of tetracycline hydrochloride (TC.HCl) from different reaction time, reaction temperature and loading graphene, especially the introduction of 8% GO supported on QDs CdSe and when the reaction temperature is 200 degrees C resulted in 77.7% degradation of 15 mg/L TC.HCI in 60 min with 0.5 g/L catalyst. And the possible process of charge transfer for CdSe-rGO nanocomposite was proposed and discussed in detail based on the experimental results.