氟石墨烯纳米片的制备及其在高真空下摩擦学性能的研究

The Preparations of Fluorographene Nanosheets and Research in Tribological Properties in High Vacuum.

作者信息

Zhang Lili, Zhang Zhengrui, Gao Xi'an, Matlan Siti Jahara, Taha Nazaruddin Abd

机构信息

College of Civil Engineering, Sichuan University of Science & Engineering, Zigong 643000, China.

Civil Engineering Programme, Faculty of Engineering, University of Malaysia Sabah, Kota Kinabalu 88400, Malaysia.

出版信息

Materials (Basel). 2023 May 24;16(11):3929. doi: 10.3390/ma16113929.

DOI:10.3390/ma16113929

PMID:37297063

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10253850/

Abstract

In this study, fluorographene nanosheets (FG nanosheets) were prepared via the solvent-ultrasonic exfoliation method. The fluorographene sheets were observed using field-emission scanning electron microscopy (FE-SEM). The microstructure of the as-prepared FG nanosheets was characterized by X-ray diffraction (XRD) and a thermal analyzer (TG). The tribological properties of FG nanosheets as an additive in ionic liquids in high vacuum were compared to that of ionic liquid (IL) with graphene (IL-G). The wear surfaces and transfer films were analyzed via an optical microscope, Raman spectroscopy, scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The results show that FG nanosheets can be obtained from the simple solvent-ultrasonic exfoliation method. The prepared G nanosheets are a sheet, and the longer the ultrasonic time is, the thinner the sheet is. Ionic liquids with FG nanosheets had low friction and a low wear rate under high vacuum conditions. The improved frictional properties were attributed to the transfer film of FG nanosheets and more formation film of Fe-F.

摘要

在本研究中，通过溶剂超声剥离法制备了氟石墨烯纳米片（FG纳米片）。使用场发射扫描电子显微镜（FE-SEM）观察氟石墨烯片。通过X射线衍射（XRD）和热分析仪（TG）对所制备的FG纳米片的微观结构进行了表征。将FG纳米片作为添加剂在离子液体中在高真空下的摩擦学性能与含有石墨烯的离子液体（IL-G）进行了比较。通过光学显微镜、拉曼光谱、扫描电子显微镜（SEM）和X射线光电子能谱（XPS）对磨损表面和转移膜进行了分析。结果表明，FG纳米片可通过简单的溶剂超声剥离法获得。所制备的G纳米片为片状，超声时间越长，片越薄。含有FG纳米片的离子液体在高真空条件下具有低摩擦和低磨损率。摩擦性能的改善归因于FG纳米片的转移膜和更多的Fe-F形成膜。