Abstract
In situ liquid cell transmission electron microscopy (TEM) is a very useful tool for investigating dynamic solid-liquid reactions. However, there are challenges to observe the early stages of spontaneous solid-liquid reactions using a closed-type liquid cell system, the most popular and simple liquid cell system. We propose a graphene encapsulation method to overcome this limitation of closed-type liquid cell TEM. The solid and liquid are separated using graphene to suspend the reaction until the graphene layer is destroyed. Graphene can be decomposed by the high-energy electron beam used in TEM, allowing the reaction to proceed. Fast dissolution of graphene-capped copper nanoparticles in an FeCl3 solution was demonstrated via in situ liquid cell TEM at 300 kV using a cell with closed-type SiNx windows.
| Original language | English |
|---|---|
| Pages (from-to) | 53-60 |
| Number of pages | 8 |
| Journal | Microscopy and Microanalysis |
| Volume | 28 |
| Issue number | 1 |
| DOIs | |
| State | Published - 28 Feb 2022 |
Keywords
- early stage of reaction
- graphene encapsulation
- in situ transmission electron microscopy (TEM)
- nanoparticle
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