In-situ Characterization Technique Development Group, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan.
Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan.
Microscopy (Oxf). 2021 Nov 24;70(6):545-549. doi: 10.1093/jmicro/dfab019.
We developed a gas environmental heating specimen holder system by applying differential pumping effect to a specimen holder for the insitu transmission electron microscopy observation and electron energy loss spectroscopy (EELS) analysis of catalytic materials. In the insitu experiments, using two small orifices and O-rings, the maximum formed gas pressure was ∼20 Pa. Also, using a heater membrane, the maximum obtained heating temperature was ∼1000°C. We could actually observe/analyze the Pt and Ni nanoparticles with an atomic scale using a double-aberration-corrected microscope and an EELS instrument in the reaction gases at high temperatures.
我们通过对用于原位透射电子显微镜观察和电子能量损失光谱（EELS）分析催化材料的样品架应用差压泵送效应，开发了一种气体环境加热样品架系统。在原位实验中，使用两个小孔和 O 型圈，最大形成气压约为 20Pa。此外，使用加热膜，可获得的最高加热温度约为 1000°C。我们实际上可以在高温反应气体中使用具有双像差校正的显微镜和 EELS 仪器观察/分析原子级的 Pt 和 Ni 纳米颗粒。
