摘要：In this paper, the adsorption composite materi-als based on the incorporation of diatomite (DE) and graphene oxide(GO)were developed and character-ized by different techniques(UV-vis,Raman. SEM and XRD). The adsorption behaviors for methylene blue(MB)as received GO-DE composite materials adsorbents have been investigated. The results indi-cate that GO-DE composite materials can signifi-cantly hoist the adsorption capacity of DE and im-prove the separation trouble of GO with outstanding adsorption ability. It is concluded that the GO-DE composite material retain the porous structure ofDE, and GO nanosheets bind physically to the surface of DE. The adsorption experiments show that the ki-netic data fit well with pseudo-second-order model. The adsorption isotherms follow the Freundlich iso-therm model. The adsorption behavior ofthe GO-DE composites is an exothermic and spontaneous pro-cess. The GO-DE composite materials can be a promising candidate as an adsorbent for the removal of cationic dyes from wastewater.
关键词：Diatomite;graphene oxide;adsorption;methylene blue
