高性能多层氧化石墨烯基复合水凝胶的可控合成方法研究  

Controllable synthesis of high-performance multilayer graphene oxide-based composite hydrogels

作　　者：郑静 李晓燕 马欣艳 闫鸿熠 王晨 柴涛 Zheng Jing;Li Xiaoyan;Ma Xinyan;Yan Hongyi;Wang Chen;Chai Tao(School of Environmental and Safety Engineering,Central North University,Taiyuan 030051;Shanxi North Xing'an Chemical Industry Co.,Ltd.,Taiyuan 030051)

机构地区：[1]中北大学环境与安全工程学院,太原030051 [2]山西北方兴安化学工业有限公司,太原030051

出　　处：《化工新型材料》2024年第4期83-87,92,共6页New Chemical Materials

基　　金：国家重点研发计划项目(2018YFB1900200)。

摘　　要：以多层氧化石墨烯(GO)为原料,羟丙基纤维素(HPC)为骨架,采用溶剂热法制备还原氧化石墨烯复合海绵的前驱物——三维还原氧化石墨烯复合水凝胶。考察分散液配比、置换程度、pH、反应时间与温度、HPC添加量等因素对水凝胶成型性的影响。结果表明:分散液中无水乙醇与去离子水最佳配比为1∶1;离心时间30min、置换次数6次时层间水分置换最彻底;pH=8、反应温度210℃、时间14h、HPC添加量10mg时制备效果最佳。Three-dimensional reduced graphene oxide composite hydrogel,a precursor of reduced graphene oxide composite sponge,was prepared by solvothermal method with multilayer graphene oxide(GO)as raw material and hydroxypropyl cellulose(HPC)as skeleton.The effects of the ratio of dispersion solution,displacement degree,pH value,reaction time and temperature,and HPC addition on the formability of hydrogels were investigated.The results showed that the optimal ratio of anhydrous ethanol to deionized water in the dispersion was 1∶1.When the centrifugation time was 30min and the displacement frequency was 6 times,the interlayer water displacement was the most thorough.The best preparation effect was achieved when pH was 8,reaction temperature was 210℃,time was 14h,and HPC addition was 10mg.

关 键 词：多层氧化石墨烯 羟丙基纤维素 复合水凝胶 溶剂热法 

分 类 号：X703.1[环境科学与工程—环境工程]