Facile preparation of graphene-graphene oxide liquid cells and their application in liquid-phase STEM imaging of Pt atoms

被引：0
作者：
Takeguchi, Masaki [1 ]
Mitsuishi, Kazutaka [2 ]
Hashimoto, Ayako [1 ,3 ]
机构：
[1] Natl Inst Mat Sci, Res Ctr Energy & Environm Mat, Tsukuba, Japan
[2] Natl Inst Mat Sci, Ctr Basic Res Mat, Tsukuba, Japan
[3] Univ Tsukuba, Degree Programs Pure & Appl Sci, Tsukuba, Japan
来源：
APPLIED PHYSICS EXPRESS | 2024年 / 17卷 / 08期
关键词：
liquid cell; liquid-phase transmission electron microscopy; graphene; graphene oxide; platinum; scanning transmission electron microscopy; TRANSMISSION ELECTRON-MICROSCOPY; RESOLUTION; GROWTH;
D O I：
10.35848/1882-0786/ad63f2
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Graphene-graphene oxide (GO) hybrid liquid cells (LCs) for liquid-phase scanning transmission electron microscopy (STEM) were fabricated using a facile method with commercial graphene on a polymethyl methacrylate sheet and GO on a TEM grid. LCs containing Pt nanoparticles (NPs) and pure water were efficiently produced and observed via STEM. Their composition and thickness were characterized by STEM-electron energy-loss spectroscopy. High-resolution (HR) STEM revealed slow-moving Pt NPs' atomic structures and fast-moving single Pt atoms at the LC's thin edges. Minimal damage during HR STEM indicated stable LCs because of their excellent electrical and thermal conductivities and radiolysis species scavenging ability.
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