scholarly journals Stabilization Effects in Binary Colloidal Cu and Ag Nanoparticle Electrodes under Electrochemical CO2 Reduction Conditions

Nanoscale ◽  
2021 ◽  
Author(s):  
Longfei Wu ◽  
Kees Kolmeijer ◽  
Yue Zhang ◽  
Hongyu An ◽  
Sven Arnouts ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Electrochemical Reaction ◽  
Co2 Reduction ◽  
Modified Electrodes ◽  
Ag Nanoparticle ◽  
Reaction Conditions ◽  
Electrochemical Co2 Reduction ◽  
Carbon Dioxide Co2 ◽  
Reduction Catalysts ◽  
Sintering Processes

Nanoparticle modified electrodes constitute an attractive way to tailor-make efficient carbon dioxide (CO2) reduction catalysts. However, the restructuring and sintering processes of nanoparticles under electrochemical reaction conditions not only impedes...

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...

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...

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,...

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.

Low Full‐Cell Voltage Driven High‐Current‐Density Selective Paired Formate Electrosynthesis

2021 ◽  
Author(s):  
Chuqian Xiao ◽  
Ling Cheng ◽  
Yating Wang ◽  
Jinze Liu ◽  
Rongzhen Chen ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
High Current Density ◽  
Co2 Reduction ◽  
Value Added ◽  
Cell Voltage ◽  
High Current ◽  
Oxidation Of Methanol ◽  
Promising Strategy ◽  
Electro Oxidation ◽  
Carbon Dioxide Co2

Anodic selective electro‐oxidation of methanol paring with cathodic carbon dioxide (CO2) reduction is regarded as a promising strategy to generate value added formate product. We firstly design a 3D‐assembled NiCo...

scholarly journals Extreme droughts drive tropical semi-arid eutrophic reservoirs towards CO2 sub-saturation

2018 ◽  
Vol 30 (0) ◽  
Author(s):  
Jurandir Rodrigues de Mendonça Júnior ◽  
André Megali Amado ◽  
Luciana de Oliveira Vidal ◽  
Arthur Mattos ◽  
Vanessa Becker
Keyword(s):  
Carbon Dioxide ◽  
Water Level ◽  
Chlorophyll A ◽  
Co2 Reduction ◽  
Water Volume ◽  
Drought Period ◽  
Autotrophic Metabolism ◽  
Semi Arid Region ◽  
Carbon Dioxide Co2 ◽  
Semi Arid

Abstract Aim: This study aimed to evaluate the carbon dioxide (CO2) dynamics in tropical semi-arid reservoirs during a prolonged drought period as well as to test if the trophic state affects the CO2 saturation. Methods This study was performed in four reservoirs located in the tropical semi-arid region in the northeast of Brazil. All samplings were performed between 9 and 12 am using a Van Dorn Bottle. Samples for partial pressure of carbon dioxide (pCO2 ) measurements were taken in the sub-surface as well as samples for total phosphorus and chlorophyll-a. Correlation analysis and linear regression were used to detect relations among the calculated pCO2, water volume and chlorophyll-a. Results The water level reduction due to atypical droughts caused chlorophyll-a concentrations to increase, which in turn, led to CO2 reduction in the water. However, CO2 concentrations were very variable and an alternation between CO2 sub-saturation and super-saturation conditions was observed. This paper showed that water volume and chlorophyll-a were important regulators of CO2 in the water, as well as important carbon balance predictors in the tropical semiarid reservoirs. Conclusions The results of this paper indicate that the eutrophication allied to drastic water level reductions lead to a tendency of autotrophic metabolism of these systems.

Iron Sulphur Cluster [Fe4S4(SPh)4]2– Catalyzed Electrochemical Reduction of CO2 on Carbon Electrodes in [Bu4N][BF4]-DMF Mixture

2020 ◽  
Vol 16 (7) ◽  
pp. 854-862
Author(s):  
Khalaf M. Alenezi
Keyword(s):  
Co2 Reduction ◽  
Inorganic Materials ◽  
Vitreous Carbon ◽  
Carbon Electrode ◽  
Electrocatalytic Reduction ◽  
Reaction Conditions ◽  
Reduction Activity ◽  
Co Conversion ◽  
Carbon Dioxide Co2 ◽  
Reduction Of Co2

Background: An efficient, selective and durable electrocatalytic carbon dioxide (CO2) reduction system is a prerequisite to tackle energy and pollution-related issues. In this context, both organic and inorganic materials have gained a significant interest worldwide. Objective: In the present work, the electrocatalytic reduction activity of an iron-sulphur (Fe-S) cluster, [Fe4S4(SPh)4]2– for CO2 → carbon monoxide (CO) conversion has been investigated. The effect of catalyst concentration on the yield of CO and H2 was determined. Besides, the influence of reaction conditions (presence or absence of a Brønsted acid, electrolysis time etc.) on faradaic yield and product selectivity was also investigated. Methods: Cyclic voltammetry (CV) was carried out on vitreous carbon electrode in 0.1 M [Bu4N] [BF4]-DMF electrolyte. At the end of electrolysis, products were collected by tight-gas syringe and analyzed by gas chromatography (GC) system coupled with a thermal conductivity detector. Results: The Fe-S cluster was found to efficiently catalyse the process on carbon electrode in 0.1 M [Bu4N][BF4]-DMF electrolyte. Moreover, the presence of cluster shifted the reduction potential by ~ 200 mV towards the positive. GC analysis confirmed the formation of CO with a current efficiency of ca. 70%. On the other hand, 12% H2 was observed at the end of electrocatalysis. Conclusion: In summary, Fe-S cluster was used for the electrocatalytic reduction of CO2 in 0.1 M [Bu4N][BF4]-DMF electrolyte. The use of cluster (catalyst) was found to be important for CO2 reduction as no CO was detected in the absence of the catalyst. This study highlights the potential application of Fe-S cluster for CO2 reduction.

Sign in / Sign up

Export Citation Format

Share Document