scholarly journals Positional effects of second-sphere amide pendants on electrochemical CO2 reduction catalyzed by iron porphyrins

2018 ◽  
Vol 9 (11) ◽  
pp. 2952-2960 ◽  
Author(s):  
Eva M. Nichols ◽  
Jeffrey S. Derrick ◽  
Sepand K. Nistanaki ◽  
Peter T. Smith ◽  
Christopher J. Chang
Keyword(s):  
Carbon Dioxide ◽  
Greenhouse Gas ◽  
Electrochemical Reduction ◽  
Energy Input ◽  
Sustainable Energy ◽  
Co2 Reduction ◽  
Value Added ◽  
Iron Porphyrins ◽  
Electrochemical Co2 Reduction ◽  
Positional Effects

The development of catalysts for electrochemical reduction of carbon dioxide offers an attractive approach to transforming this greenhouse gas into value-added carbon products with sustainable energy input.

An overview of flow cell architectures design and optimization for electrochemical CO2 reduction

2021 ◽  
Author(s):  
Dui Ma ◽  
Ting Jin ◽  
Keyu Xie ◽  
Haitao Huang
Keyword(s):  
Carbon Dioxide ◽  
Global Warming ◽  
Electrochemical Reduction ◽  
Atmospheric Carbon Dioxide ◽  
Co2 Reduction ◽  
Value Added ◽  
Flow Cell ◽  
Design And Optimization ◽  
Electrochemical Co2 Reduction ◽  
Carbon Dioxide Levels

Converting CO2 into value-added fuels or chemical feedstocks through electrochemical reduction is one of the several promising avenues to reduce atmospheric carbon dioxide levels and alleviate global warming. This approach...

CuAg nanoparticles/carbon aerogel for electrochemical CO2 reduction

2021 ◽  
Author(s):  
Wenbo Wang ◽  
Runqing Lu ◽  
Xin-Xin Xiao ◽  
Shanhe Gong ◽  
Daniel Kobina Sam ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Greenhouse Gas ◽  
Co2 Reduction ◽  
Value Added ◽  
Electrical Energy ◽  
Carbon Aerogel ◽  
Carbon Dioxide Reduction ◽  
Reduction Reaction ◽  
Electrochemical Co2 Reduction ◽  
Value Added Products

Electrochemical carbon dioxide reduction reaction (eCO2RR) is a promising technology that uses electrical energy to catalytically reduce the greenhouse gas-CO2, which can convert CO2 into high value-added products such as...

Electrochemical CO2 Reduction to Ethanol: From Mechanistic Understanding to Catalyst Design

2021 ◽  
Author(s):  
Tu Ngoc Nguyen ◽  
Jiaxun Guo ◽  
Ashwini Sachindran ◽  
Fengwang Li ◽  
Ali Seifitokaldani ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Greenhouse Gas ◽  
Electrochemical Reduction ◽  
Co2 Reduction ◽  
Catalyst Design ◽  
Greenhouse Gas Mitigation ◽  
Electrochemical Co2 Reduction ◽  
Mechanistic Understanding ◽  
Carbon Dioxide Co2

The electrochemical reduction of carbon dioxide (CO2) to chemicals is gaining great attention as a pragmatic solution for greenhouse gas mitigation and for the utilization of CO2 to produce useful...

scholarly journals From Electricity to Fuels: Descriptors for C1 Selectivity in Electrochemical CO2 Reduction

2019 ◽  
Author(s):  
Michael Tang ◽  
Hongjie Peng ◽  
Philomena Schlexer Lamoureux ◽  
Michal Bajdich ◽  
Frank Abild-Pedersen
Keyword(s):  
Carbon Dioxide ◽  
Electrochemical Reduction ◽  
Co2 Reduction ◽  
Reaction Network ◽  
Binding Energies ◽  
Complex Reaction ◽  
Applied Potential ◽  
Electrochemical Co2 Reduction ◽  
Reduced Products ◽  
Combine Evidence

Electrochemical reduction of carbon dioxide (CO<sub>2</sub>) over transition metals follows a complex reaction network. Even for products with a single carbon atom (C<sub>1</sub> products), two bifurcated pathways exist: initially between carboxyl (COOH*) and formate (HCOO*) intermediates and the COOH* intermediate is further bifurcated by pathways involving either formyl (CHO*) or COH*. In this study, we combine evidence from the experimental literature with a theoretical analysis of energetics to rationalize that not all steps in the reduction of CO<sub>2</sub> are electrochemical. This insight enables us to create a selectivity map for two-electron products (carbon monoxide (CO) and formate) on elemental metal surfaces using only the CO and OH binding energies as descriptors. In the further reduction of CO<sup>*</sup>, we find that CHO* is formed through a chemical step only whereas COH* follows from an electrochemical step. Notably on Cu(100), the COH pathway becomes dominant at an applied potential lower than −0.5V vs. RHE. For the elemental metals selective towards CO formation, the variation of the CO binding energy is sufficient to further subdivide the map into domains that predominantly form H<sub>2</sub>, CO, and ultimately more reduced products. We find Cu to be the only elemental metal capable of reducing CO<sub>2</sub> to products beyond 2e<sup>− </sup>via the proposed COH pathway and we identify atomic carbon as the key component leading to the production of methane. Our analysis also rationalizes experimentally observed differences in products between thermal and electrochemical reduction of CO<sub>2</sub> on Cu.

Understanding Trends in Activity and Selectivity of Bi-atom Catalysts for Electrochemical Reduction of Carbon Dioxide

2021 ◽  
Author(s):  
Fuhua Li ◽  
Qing Tang
Keyword(s):  
Carbon Dioxide ◽  
Transition Metal ◽  
Greenhouse Gas ◽  
Electrochemical Reduction ◽  
Co2 Reduction ◽  
Metal Catalyst ◽  
Transition Metal Catalyst ◽  
Reduction Efficiency

The electrocatalytic CO2 reduction offers a promising approach to produce valuable chemicals using greenhouse gas as the feedstock, while the reduction efficiency on conventional transition metal catalyst is limited by...

scholarly journals From Electricity to Fuels: Descriptors for C1 Selectivity in Electrochemical CO2 Reduction

2019 ◽  
Author(s):  
Michael Tang ◽  
Hongjie Peng ◽  
Philomena Schlexer Lamoureux ◽  
Michal Bajdich ◽  
Frank Abild-Pedersen
Keyword(s):  
Carbon Dioxide ◽  
Electrochemical Reduction ◽  
Co2 Reduction ◽  
Reaction Network ◽  
Binding Energies ◽  
Complex Reaction ◽  
Applied Potential ◽  
Electrochemical Co2 Reduction ◽  
Reduced Products ◽  
Combine Evidence

Electrochemical reduction of carbon dioxide (CO<sub>2</sub>) over transition metals follows a complex reaction network. Even for products with a single carbon atom (C<sub>1</sub> products), two bifurcated pathways exist: initially between carboxyl (COOH*) and formate (HCOO*) intermediates and the COOH* intermediate is further bifurcated by pathways involving either formyl (CHO*) or COH*. In this study, we combine evidence from the experimental literature with a theoretical analysis of energetics to rationalize that not all steps in the reduction of CO<sub>2</sub> are electrochemical. This insight enables us to create a selectivity map for two-electron products (carbon monoxide (CO) and formate) on elemental metal surfaces using only the CO and OH binding energies as descriptors. In the further reduction of CO<sup>*</sup>, we find that CHO* is formed through a chemical step only whereas COH* follows from an electrochemical step. Notably on Cu(100), the COH pathway becomes dominant at an applied potential lower than −0.5V vs. RHE. For the elemental metals selective towards CO formation, the variation of the CO binding energy is sufficient to further subdivide the map into domains that predominantly form H<sub>2</sub>, CO, and ultimately more reduced products. We find Cu to be the only elemental metal capable of reducing CO<sub>2</sub> to products beyond 2e<sup>− </sup>via the proposed COH pathway and we identify atomic carbon as the key component leading to the production of methane. Our analysis also rationalizes experimentally observed differences in products between thermal and electrochemical reduction of CO<sub>2</sub> on Cu.

Sn-doped Bi2O3 Nanosheets for Highly Efficient Electrochemical CO2 Reduction toward Formate Production

Nanoscale ◽  
2021 ◽  
Author(s):  
Xiao Li ◽  
Xingqiao Wu ◽  
Junjie Li ◽  
Jingbo Huang ◽  
Liang Ji ◽  
...  
Keyword(s):  
Greenhouse Gas ◽  
Co2 Reduction ◽  
Value Added ◽  
Efficient Conversion ◽  
Highly Efficient ◽  
Electrochemical Co2 Reduction ◽  
Huge Challenge ◽  
Formate Production

Electrocatalytic CO2 reduction into formate is considered as a perfect route to efficient conversion of greenhouse gas CO2 to value-added chemicals. However, it still remains a huge challenge to design...

Atomic-level engineering of two-dimensional electrocatalysts for CO2 Reduction

Nanoscale ◽  
2021 ◽  
Author(s):  
Wei Shao ◽  
Xiaodong Zhang
Keyword(s):  
Carbon Dioxide ◽  
Fossil Fuels ◽  
Co2 Reduction ◽  
Value Added ◽  
Atomic Level ◽  
Two Dimensional ◽  
Excessive Consumption

Carbon dioxide (CO2) from the excessive consumption of fossil fuels has exhibited a huge threat to the planet’s ecosystem. Electrocatalytic CO2 reduction into value-added chemicals have been regarded as a...

Design of a Synthetic Enzyme Cascade for the in vitro Fixation of a C1 Carbon Source to a Functional C4 Sugar

2021 ◽  
Author(s):  
Samed Güner ◽  
Vanessa Wegat ◽  
André Pick ◽  
Volker Sieber
Keyword(s):  
Carbon Dioxide ◽  
Carbon Source ◽  
Greenhouse Gas ◽  
Value Added ◽  
Waste Stream ◽  
Enzyme Cascade ◽  
Sustainable Future ◽  
Value Added Products

Realizing a sustainable future requires intensifying the waste stream conversion, such as converting the greenhouse gas carbon dioxide into value-added products. In this paper, we focus on utilizing formaldehyde as...

Hierarchical three-dimensional copper selenide nanocubes microelectrodes for improved carbon dioxide reduction reaction

2021 ◽  
Author(s):  
Rajasekaran Elakkiya ◽  
Govindhan Maduraiveeran
Keyword(s):  
Carbon Dioxide ◽  
High Performance ◽  
Three Dimensional ◽  
Co2 Reduction ◽  
Value Added ◽  
Carbon Dioxide Reduction ◽  
Reduction Reaction ◽  
Earth Abundant ◽  
Carbon Dioxide Co2 ◽  
Co2 Reduction Reaction

Design of high-performance and Earth-abundant electrocatalysts for electrochemical carbon dioxide (CO2) reduction reaction (CO2RR) into fuels and value-added chemicals offers an emergent pathway for environment and energy sustainable concerns. Herein,...

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