Degeneration Behavior of Cu Nanowires under Carbon Dioxide Environment: An in Situ/Operando Study

Kun He; Kyoungdoc Kim; Cesar Jared Villa; Stephanie M. Ribet; Paul Smeets; Roberto dos Reis; Peter W. Voorhees; Xiaobing Hu; Vinayak P. Dravid

doi:10.1021/acs.nanolett.1c01592

Degeneration Behavior of Cu Nanowires under Carbon Dioxide Environment: An in Situ/Operando Study

Kun He, Kyoungdoc Kim, Cesar Jared Villa, Stephanie M. Ribet, Paul Smeets, Roberto dos Reis, Peter W. Voorhees, Xiaobing Hu^*, Vinayak P. Dravid^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Copper (Cu) is a catalyst broadly used in industry for hydrogenation of carbon dioxide, which has broad implications for environmental sustainability. An accurate understanding of the degeneration behavior of Cu catalysts under operando conditions is critical for uncovering the failure mechanism of catalysts and designing novel ones with optimized performance. Despite the widespread use of these materials, their failure mechanisms are not well understood because conventional characterization techniques lack the necessary time and spatial resolution to capture these complex behaviors. In order to overcome these challenges, we carried out transmission electron microscopy (TEM) with a specialized in situ gas environmental holder, which allows us to unravel the dynamic behavior of the Cu nanowires (NWs) in operando. The failure process of these nanoscale Cu catalysts under CO2 atmosphere were tracked and further rationalized based on our numerical modeling using phase-field methods.

Original language	English (US)
Pages (from-to)	6813-6819
Number of pages	7
Journal	Nano letters
Volume	21
Issue number	16
DOIs	https://doi.org/10.1021/acs.nanolett.1c01592
State	Published - Aug 25 2021

Funding

This work made use of the EPIC facility of Northwestern University’s NU ANCE Center, which has received support from the SHyNE Resource (NSF ECCS-2025633), the IIN, and Northwestern’s MRSEC program (NSF DMR-1720139). K.K. acknowledges the support from the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2021R1C1C1012756).

Keywords

Cu nanowire
catalysis
degeneration
gas cell
phase-field simulation

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Mechanical Engineering
Bioengineering
General Materials Science

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10.1021/acs.nanolett.1c01592

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title = "Degeneration Behavior of Cu Nanowires under Carbon Dioxide Environment: An in Situ/Operando Study",

abstract = "Copper (Cu) is a catalyst broadly used in industry for hydrogenation of carbon dioxide, which has broad implications for environmental sustainability. An accurate understanding of the degeneration behavior of Cu catalysts under operando conditions is critical for uncovering the failure mechanism of catalysts and designing novel ones with optimized performance. Despite the widespread use of these materials, their failure mechanisms are not well understood because conventional characterization techniques lack the necessary time and spatial resolution to capture these complex behaviors. In order to overcome these challenges, we carried out transmission electron microscopy (TEM) with a specialized in situ gas environmental holder, which allows us to unravel the dynamic behavior of the Cu nanowires (NWs) in operando. The failure process of these nanoscale Cu catalysts under CO2 atmosphere were tracked and further rationalized based on our numerical modeling using phase-field methods.",

keywords = "Cu nanowire, catalysis, degeneration, gas cell, phase-field simulation",

author = "Kun He and Kyoungdoc Kim and Villa, {Cesar Jared} and Ribet, {Stephanie M.} and Paul Smeets and Reis, {Roberto dos} and Voorhees, {Peter W.} and Xiaobing Hu and Dravid, {Vinayak P.}",

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T1 - Degeneration Behavior of Cu Nanowires under Carbon Dioxide Environment

T2 - An in Situ/Operando Study

AU - He, Kun

AU - Kim, Kyoungdoc

AU - Villa, Cesar Jared

AU - Ribet, Stephanie M.

AU - Smeets, Paul

AU - Reis, Roberto dos

AU - Voorhees, Peter W.

AU - Hu, Xiaobing

AU - Dravid, Vinayak P.

PY - 2021/8/25

Y1 - 2021/8/25

N2 - Copper (Cu) is a catalyst broadly used in industry for hydrogenation of carbon dioxide, which has broad implications for environmental sustainability. An accurate understanding of the degeneration behavior of Cu catalysts under operando conditions is critical for uncovering the failure mechanism of catalysts and designing novel ones with optimized performance. Despite the widespread use of these materials, their failure mechanisms are not well understood because conventional characterization techniques lack the necessary time and spatial resolution to capture these complex behaviors. In order to overcome these challenges, we carried out transmission electron microscopy (TEM) with a specialized in situ gas environmental holder, which allows us to unravel the dynamic behavior of the Cu nanowires (NWs) in operando. The failure process of these nanoscale Cu catalysts under CO2 atmosphere were tracked and further rationalized based on our numerical modeling using phase-field methods.

AB - Copper (Cu) is a catalyst broadly used in industry for hydrogenation of carbon dioxide, which has broad implications for environmental sustainability. An accurate understanding of the degeneration behavior of Cu catalysts under operando conditions is critical for uncovering the failure mechanism of catalysts and designing novel ones with optimized performance. Despite the widespread use of these materials, their failure mechanisms are not well understood because conventional characterization techniques lack the necessary time and spatial resolution to capture these complex behaviors. In order to overcome these challenges, we carried out transmission electron microscopy (TEM) with a specialized in situ gas environmental holder, which allows us to unravel the dynamic behavior of the Cu nanowires (NWs) in operando. The failure process of these nanoscale Cu catalysts under CO2 atmosphere were tracked and further rationalized based on our numerical modeling using phase-field methods.

KW - Cu nanowire

KW - catalysis

KW - degeneration

KW - gas cell

KW - phase-field simulation

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Degeneration Behavior of Cu Nanowires under Carbon Dioxide Environment: An in Situ/Operando Study

Abstract

Funding

Keywords

ASJC Scopus subject areas

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