A Universal Nano-capillary Based Method of Catalyst Immobilization for Liquid-Cell Transmission Electron Microscopy.
Angew Chem Int Ed Engl
; 59(14): 5586-5590, 2020 03 27.
Article
em En
| MEDLINE
| ID: mdl-31960548
ABSTRACT
A universal nano-capillary based method for sample deposition on the silicon nitride membrane of liquid-cell transmission electron microscopy (LCTEM) chips is demonstrated. It is applicable to all substances which can be dispersed in a solvent and are suitable for drop casting, including catalysts, biological samples, and polymers. Most importantly, this method overcomes limitations concerning sample immobilization due to the fragility of the ultra-thin silicon nitride membrane required for electron transmission. Thus, a straightforward way is presented to widen the research area of LCTEM to encompass any sample which can be externally deposited beforehand. Using this method, Nix B nanoparticles are deposited on the µm-scale working electrode of the LCTEM chip and inâ
situ observation of single catalyst particles during ethanol oxidation is for the first time successfully monitored by means of TEM movies.
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MEDLINE
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En
Ano de publicação:
2020
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Article