▎ 摘　　要

Ethylenediamine-functionalized reduced graphene oxide (GO) was synthesized by reacting chlorine-functionalized reduced GO and ethylenediamine. Chlorine atoms in reduced GO are susceptible to substitution by ethylenediamine, thereby causing their elimination. The product exhibits improved efficiency in methylene blue (MB) removal. Adsorption kinetics of the reaction fit a pseudo-second order model. Adsorption isotherms of MB on the product could be well described by the Langmuir model; physisorption may dominate the adsorption process. Batch experiments show an adsorption capacity of 143.6 mg/g, which is superior to those of reduced GO (77.2 mg/g) and activated carbon (AC, 46.5 mg/g).