In situ environmental TEM observation of two-stage shrinking of Cu2O islands on Cu(100) during methanol reduction

Hao Chi; Matthew T. Curnan; Meng Li; Christopher M. Andolina; Wissam A. Saidi; Götz Veser; Judith C. Yang

doi:10.1039/C9CP05831A

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In situ environmental TEM observation of two-stage shrinking of Cu₂O islands on Cu(100) during methanol reduction†

Hao Chi,^a Matthew T. Curnan,

^ab Meng Li,

^a Christopher M. Andolina,

^a Wissam A. Saidi,

^b Götz Veser*^ac and Judith C. Yang*^ad

Author affiliations

* Corresponding authors

^a Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA 15216, USA
E-mail: gveser@pitt.edu, judyyang@pitt.edu

^b Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA 15216, USA

^c Center for Energy, University of Pittsburgh, Pittsburgh, PA 15216, USA

^d Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15216, USA

Abstract

The structural dynamics of Cu catalyst regeneration from Cu₂O under methanol is poorly understood. In situ Environmental TEM on Cu(100)-supported Cu₂O islands reveals a transition from anisotropic to isotropic shrinking during reduction. Two-stage reduction is statistically supported and explained by preferential methanol reactivity on Cu₂O nano-islands with DFT simulations.

This article is part of the themed collection: 2020 PCCP HOT Articles

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Article information

DOI: https://doi.org/10.1039/C9CP05831A
Article type: Communication
Submitted: 28 Oct 2019
Accepted: 06 Jan 2020
First published: 21 Jan 2020

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Phys. Chem. Chem. Phys., 2020,22, 2738-2742

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In situ environmental TEM observation of two-stage shrinking of Cu₂O islands on Cu(100) during methanol reduction

H. Chi, M. T. Curnan, M. Li, C. M. Andolina, W. A. Saidi, G. Veser and J. C. Yang, Phys. Chem. Chem. Phys., 2020, 22, 2738 DOI: 10.1039/C9CP05831A

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