Impacts of the Catalyst Structures on CO2 Activation on Catalyst Surfaces

Ubong J. Etim; Chenchen Zhang; Ziyi Zhong

doi:10.3390/nano11123265

Impacts of the Catalyst Structures on CO2 Activation on Catalyst Surfaces

Ubong J. Etim, Chenchen Zhang, Ziyi Zhong^*

^*Corresponding author for this work

Chemical Engineering

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34 Scopus citations

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Abstract

Utilizing CO2 as a sustainable carbon source to form valuable products requires activating it by active sites on catalyst surfaces. These active sites are usually in or below the nanometer scale. Some metals and metal oxides can catalyze the CO2 transformation reactions. On metal oxide-based catalysts, CO2 transformations are promoted significantly in the presence of surface oxygen vacancies or surface defect sites. Electrons transferable to the neutral CO2 molecule can be enriched on oxygen vacancies, which can also act as CO2 adsorption sites. CO2 activation is also possible without necessarily transferring electrons by tailoring catalytic sites that promote interactions at an appropriate energy level alignment of the catalyst and CO2 molecule. This review discusses CO2 activation on various catalysts, particularly the impacts of various structural factors, such as oxygen vacancies, on CO2 activation. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Original language	English
Journal	Nanomaterials
DOIs	https://doi.org/10.3390/nano11123265
State	E-pub ahead of print - 1 Dec 2021

Keywords

CO2 conversion
CO2 activation
metal oxide nanoparticles
oxygen vacancies

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title = "Impacts of the Catalyst Structures on CO2 Activation on Catalyst Surfaces",

abstract = "Utilizing CO2 as a sustainable carbon source to form valuable products requires activating it by active sites on catalyst surfaces. These active sites are usually in or below the nanometer scale. Some metals and metal oxides can catalyze the CO2 transformation reactions. On metal oxide-based catalysts, CO2 transformations are promoted significantly in the presence of surface oxygen vacancies or surface defect sites. Electrons transferable to the neutral CO2 molecule can be enriched on oxygen vacancies, which can also act as CO2 adsorption sites. CO2 activation is also possible without necessarily transferring electrons by tailoring catalytic sites that promote interactions at an appropriate energy level alignment of the catalyst and CO2 molecule. This review discusses CO2 activation on various catalysts, particularly the impacts of various structural factors, such as oxygen vacancies, on CO2 activation. {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

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author = "Etim, {Ubong J.} and Chenchen Zhang and Ziyi Zhong",

year = "2021",

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doi = "10.3390/nano11123265",

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TY - JOUR

T1 - Impacts of the Catalyst Structures on CO2 Activation on Catalyst Surfaces

AU - Etim, Ubong J.

AU - Zhang, Chenchen

AU - Zhong, Ziyi

PY - 2021/12/1

Y1 - 2021/12/1

N2 - Utilizing CO2 as a sustainable carbon source to form valuable products requires activating it by active sites on catalyst surfaces. These active sites are usually in or below the nanometer scale. Some metals and metal oxides can catalyze the CO2 transformation reactions. On metal oxide-based catalysts, CO2 transformations are promoted significantly in the presence of surface oxygen vacancies or surface defect sites. Electrons transferable to the neutral CO2 molecule can be enriched on oxygen vacancies, which can also act as CO2 adsorption sites. CO2 activation is also possible without necessarily transferring electrons by tailoring catalytic sites that promote interactions at an appropriate energy level alignment of the catalyst and CO2 molecule. This review discusses CO2 activation on various catalysts, particularly the impacts of various structural factors, such as oxygen vacancies, on CO2 activation. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

AB - Utilizing CO2 as a sustainable carbon source to form valuable products requires activating it by active sites on catalyst surfaces. These active sites are usually in or below the nanometer scale. Some metals and metal oxides can catalyze the CO2 transformation reactions. On metal oxide-based catalysts, CO2 transformations are promoted significantly in the presence of surface oxygen vacancies or surface defect sites. Electrons transferable to the neutral CO2 molecule can be enriched on oxygen vacancies, which can also act as CO2 adsorption sites. CO2 activation is also possible without necessarily transferring electrons by tailoring catalytic sites that promote interactions at an appropriate energy level alignment of the catalyst and CO2 molecule. This review discusses CO2 activation on various catalysts, particularly the impacts of various structural factors, such as oxygen vacancies, on CO2 activation. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

KW - CO2 conversion

KW - CO2 activation

KW - metal oxide nanoparticles

KW - oxygen vacancies

U2 - 10.3390/nano11123265

DO - 10.3390/nano11123265

M3 - 文章

SN - 2079-4991

JO - Nanomaterials

JF - Nanomaterials

ER -

Impacts of the Catalyst Structures on CO2 Activation on Catalyst Surfaces

Abstract

Keywords

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