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In situ Atmospheric Transmission Electron Microscopy of Catalytic Nanomaterials

Published online by Cambridge University Press:  08 May 2018

Sheng Dai Open the ORCID record for Sheng Dai [Opens in a new window] ,
Wenpei Gao ,
George W. Graham  and
Xiaoqing Pan
Sheng Dai*
Affiliation:
Department of Chemical Engineering and Materials Science, University of California - Irvine, Irvine, California 92697, USA.
Wenpei Gao
Affiliation:
Department of Chemical Engineering and Materials Science, University of California - Irvine, Irvine, California 92697, USA.
George W. Graham
Affiliation:
Department of Chemical Engineering and Materials Science, University of California - Irvine, Irvine, California 92697, USA.
Xiaoqing Pan
Affiliation:
Department of Chemical Engineering and Materials Science, University of California - Irvine, Irvine, California 92697, USA. Department of Physics and Astronomy, University of California - Irvine, Irvine, California 92697, USA.
*
*(Email: sdai2@uci.edu)
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Abstract

Significant developments in micro-electrical-mechanical systems (MEMS)-based devices for use in transmission electron microscopy (TEM) sample holders have recently led to the commercialization of windowed gas cells that now enable the atomic-resolution visualization of phenomena occurring during gas-solid interactions at atmospheric pressure. In situ atmospheric TEM study provides unique information that is beneficial to correlating the structure-properties relationship of catalytic nanomaterials, particularly under realistic gaseous reaction conditions. In this paper, we illustrate the capability of this novel in situ device as applied to our study of two catalyst systems: (1) In situ kinetic growth of free standing Pt nanowires as active catalysts toward oxygen reduction reaction (ORR); (2) In situ observation of facet-dependent oxidation of another promising ORR catalyst, Pt3Co nanoparticles.

Keywords

in situtransmission electron microscopy (TEM)catalytic
Type
Articles
Information
MRS Advances , Volume 3 , Issue 39: Characterization, Modeling and Theory , 2018 , pp. 2297 - 2303
Copyright
Copyright © Materials Research Society 2018 

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