Structural Evolution of Graphene Oxide and Its Thermal Stability During High Temperature Sintering  

作　　者：HU Lanxin WANG Aiyang WANG Weimin 胡兰馨;WANG Aiyang;王为民(School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China [2]State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2022年第3期342-349,共8页武汉理工大学学报（材料科学英文版）

基　　金：the National Natural Science Foundation of China(No.52102074);the National Key Research and Development Plan of China(No.2021YFB3701400)。

摘　　要：The thermal reduction of graphene oxide(GO)was performed by a tube furnace at different temperatures,and its structure evolution was investigated in detail.The results showed that the oxygen-containing functional groups on the carbon plane surface of GO gradually decomposed as the temperature increase,and the reduced graphene oxide(rGO)powder was obtained at 800℃.Then,rGO powder was sintered under 30 MPa at 1800℃using spark plasma sintering(SPS)and hot-pressing(HP)to evaluate its structural stability at high temperatures.The defect densities of rGO were reduced after high-temperature sintering.The edge flatness and sp^(2) hybrid carbon plane structure were reconstructed effectively.These results demonstrate that the lamellar structure of rGO maintains the structural integrity during high-temperature sintering without obvious deterioration,which provides experimental and theoretical supports for GO reinforced ceramics.

关 键 词：graphene oxide CERAMICS structure evolution thermal stability SINTERING 

分 类 号：TQ127.11[化学工程—无机化工]