LAUSR

Abstract In this paper, we developed an adsorption composite materials based on the incorporation of zeolite and graphene oxide (GO), which could significantly hoist the adsorption capacity of zeolite and improve the separation trouble of GO with outstanding adsorption ability. The GO/Beta zeolite (GB) composite materials with different GO contents were hydrothermally prepared by grafting the GO onto acid-treated Beta zeolite. The structure and physical properties of the GB composite materials were determined by a series of characterizations such as XRD, SEM, FTIR, Raman, BET and XPS. It was concluded that the GB composite materials were of the hierarchical porous structure and GO nanosheets were bonded onto the active surface of Beta zeolite. The adsorption capacity of the GB composite materials was examined by the adsorption of RB dye molecular from aqueous solution. Moreover, the effect of adsorption conditions on the adsorption of RB onto the GB composite materials for rhodamine B (RB) was extensively investigated. Finally, the adsorption behaviors of the GB composite materials for RB were fitted by Langmuir isotherm and Freundlich isotherm equations, respectively. The result showed that the maximum adsorption capacity of the GB composite materials was up to 64.47 mg/g.