Fereshteh Valizadeh - Department of Chemistry, Faculty of science, Imam Khomeini International University, Qazvin, Iran.
Maryam Dargahi - Department of Chemistry, Faculty of science, Imam Khomeini International University, Qazvin, Iran.
Majid Masteri Farahani - Faculty of Chemistry, Kharazmi University, Tehran, Islamic Republic of Iran.

In this study, graphene quantum dots and nanocomposite of manganese dioxide /Graphene quantumdots (MnO۲/GQD) were synthesized by thermal decomposition method and used to degradation of dye, TheProduct structure was confirmed by FT-IR, PL, UV-Vis, EDX, SEM, and XRD analysis. The kinetic of dye degradationfollow the first-order model.

graphene quantum dots; photocatalytic degradation of dye; nanocomposite of MnO۲/GQD; kinetics