超声辅助羟基自由基制备高浓度稳定的石墨烯分散液  

Ultrasound Assisted Preparation of High Concentration and Stable Graphene Dispersion Using Hydroxyl Radicals

作　　者：王欣 张龙[2] Wang Xin;Zhang Long(College of Petrochemical Engineering,Jilin Institute of Chemical Technology,Jilin Jilin 132000,China;College of Chemical Engineering,Changchun University of Technology,Changchun Jilin 130012,China)

机构地区：[1]吉林化工学院石油化工学院,吉林吉林132000 [2]长春工业大学化学工程学院,吉林长春130012

出　　处：《山西化工》2025年第3期14-16,22,共4页Shanxi Chemical Industry

基　　金：吉林省教育厅科学研究项目资助(JJKH20230308KJ)。

摘　　要：为解决前期研究中采用羟自由基剥离制备的高质量石墨烯产品的团聚问题,开发了超声辅助羟基自由基剥离的方法,成功制备出高浓度且稳定的石墨烯分散液。通过优化制备条件得到了质量浓度高达1.98 g/L且稳定长达90 d的石墨烯分散液。透射电子显微镜(TEM)表明在分散过程中石墨烯片层结构没有发生变化,通过Zeta电位表征和粒径分布分析了分散液长期稳定存在的机制。本文所述方法解决了传统制备过程中石墨烯分散液易团聚、浓度低、稳定性差以及环境污染等问题,同时具有应用于大规模生产的潜力。In order to solve the agglomeration problem of high-quality graphene products prepared by hydroxyl radical exfoliation in previous research,this paper developed an ultrasound assisted hydroxyl radical exfoliation method and successfully prepared a high concentration and stable graphene dispersion.By optimizing the preparation conditions,a graphene dispersion with a mass concentration of up to 1.98 g/L and stable for up to 90 days was obtained.Transmission electron microscopy(TEM)showed that the graphene layer structure did not change during the dispersion process,and the mechanism of long-term stable existence of the dispersion was analyzed through Zeta potential characterization and particle size distribution.The method described in this article solves the problems of easy agglomeration,low concentration,poor stability,and environmental pollution of graphene dispersion in traditional preparation processes,and has the potential for large-scale production.

关 键 词：超声 羟基自由基 石墨烯分散液 

分 类 号：TB383[一般工业技术—材料科学与工程]