Exfoliation of poly(ethylene glycol)-intercalated graphite oxide composite in water without sonication

作     者：Yang Hu Chun-bao Sun Jue Kou Yang Hu;Chun-bao Sun;Jue Kou

作者机构：School of Civil and Resource EngineeringUniversity of Science and Technology BeijingBeijing 100083China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2020年第27卷第6期

页      面：840-845页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：the National Natural Science Foundation of China(No.51804021) the China Postdoctoral Science Foundation(No.2018M640067) 

主　　题：graphene oxide poly(ethylene glycol) intercalation exfoliation 

摘      要：A novel method for exfoliating graphite oxide(GrO)was implemented through the mass water absorption of a GrO–poly(ethylene glycol)(GrO–PEG)*** GrO–PEG composite was prepared by intercalating PEG into the lamellae of GrO,and the variation of the basal spacing was measured by X-ray diffraction *** yield of graphene was measured with an ultraviolet–visible spectrophotometer,and the properties of graphene oxide(GO)were characterized by atomic force microscopy,transmission electron microscopy(TEM),Raman spectrometry,and Fourier transform infrared *** intercalation time was found to improve the yield of GO,whereas increasing the PEG molecular weight had the opposite *** GO sheets produced from the intercalation–absorption–exfoliation process were found to be a four-layer *** and Raman analyses indicate that the graphitized structure and oxygen groups of GO were preserved during the exfoliation *** importantly,the results show that good-quality GO could be prepared via a mild method involving water absorption of a GrO–PEG composite.