scholarly journals Thiophene Functionalized Porphyrin for Electrochemical Carbon Dioxide Reduction

2021 ◽  
Author(s):  
Ekrem Kaplan ◽  
Selin Gümrükçü ◽  
Metin Gençten ◽  
Yücel Şahin ◽  
Esin Hamuryudan
Keyword(s):  
Carbon Dioxide ◽  
Graphite Electrode ◽  
Electrochemical Polymerization ◽  
Aqueous Media ◽  
Value Added ◽  
Linear Sweep Voltammetry ◽  
Carbon Dioxide Reduction ◽  
Pencil Graphite Electrode ◽  
Organometallic Catalysts ◽  
Electrochemical Co2 Reduction

Abstract The production of catalysts that display strong efficiencies in aqueous media for the electrochemical carbon dioxide reduction reaction (CO2RR) is essential both for a healthy world and for realistic application of energy waste to generate value-added fuels. In this study, thiophene functionalized metal-free (poly-H2Por) and cobalt porphyrin-based (poly-CoPor) organometallic catalysts were easily attached on the pencil graphite electrode surface via electrochemical polymerization method and these, porphyrin coated, pencil graphite electrodes (PGE) were used as electrocatalysts for electrochemical CO2 reduction for the first time in the literature. To reveal the electrochemical activity of CO2RR, the electropolymerized catalysts were investigated with linear sweep voltammetry in 0.1 M KHCO3 solution. The results showed that, the electrode which is modified with poly-CoPor decreased the overpotential of CO2RR, according to bare pencil graphite electrode, from -1.35 V to -0.63 V.

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...

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.

scholarly journals The Sensitivity of Cu for Electrochemical Carbon Dioxide Reduction to Hydrocarbons as Revealed by High Throughput Experiments

2019 ◽  
Author(s):  
Yunchieh Lai ◽  
Ryan J. R. Jones ◽  
Yu Wang ◽  
Lan Zhou ◽  
Matthias Richter ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
High Throughput ◽  
Co2 Reduction ◽  
Carbon Dioxide Reduction ◽  
Energy Technologies ◽  
Electrochemical Co2 Reduction ◽  
Segregation Of Alloying Elements ◽  
Hydrocarbon Formation ◽  
High Throughput Experiments ◽  
Alloy Concentration

Electrochemical CO2 reduction to valuable products is a centerpiece of future energy technologies that relies on identificaiton of new catalysts. We present accelerated screening of Cu bimetallic alloys, revealing remarkable sensitivity to alloy concentration that indicates the segregation of alloying elements to critical sites for hydrocarbon formation.

scholarly journals (ECS 236th) Particle Size and Morphology of Carbon Dioxide Reduction Electrocatalysts Fabricated by Pulse/Pulse-Reverse Electrodeposition

2020 ◽  
Author(s):  
Brian Skinn ◽  
McLain Leonard ◽  
DAN WANG ◽  
Fikile R. Brushett
Keyword(s):  
Carbon Dioxide ◽  
Particle Size ◽  
Formic Acid ◽  
Carbon Dioxide Emissions ◽  
Aqueous Media ◽  
Value Added ◽  
Particle Morphology ◽  
Gas Diffusion ◽  
Metal Catalyst ◽  
Pulse Reverse

A variety of techniques for management of carbon dioxide emissions from power generation facilities and other industrial sites have been under active investigation for decades, in an effort to mitigate the environmental impacts of these releases. Once such approach is electrochemical reduction, which treats the waste CO2 as a source material for the production of value-added materials. Currently, the most promising form factor for this electrocatalytic application appears to be a stack-based system, where catalyst is immobilized on porous media that is interfaced with a liquid or solid electrolyte, and the reactant carbon dioxide is delivered to the active region by gaseous diffusion, which is orders of magnitude faster that diffusion though aqueous media. Various carbonaceous reduction products can be created depending on the composition, size, and microstructure of the catalyst particles, including formic acid/formate, carbon monoxide, alcohols, and hydrocarbons. In general, smaller catalyst particles, ideally in the nanoparticulate (<< 1 μm) range, tend to yield superior catalytic performance, due to a combination of factors such as a higher density of exposed grain boundaries and a higher fraction of exposed crystalline facets that are uncommon in particles of micron size or larger.This talk will survey recent work illustrating the ability of pulse/pulse-reverse electrodeposition processes to tune the size of particles applied to gas-diffusion electrode substrates, with a primary focus on two single-metal catalyst materials relevant to carbon dioxide electroreduction: tin and copper. The former is a catalyst primarily for formic acid production, while the latter is unique among single-metal catalysts as the only element known to date to produce significant amounts of hydrocarbons and/or alcohols. Particle morphology and representative particle size will be discussed as a function of pulsed electrodeposition waveform parameters, with the goal of highlighting overarching trends across the waveform space.

scholarly journals The impact of anode materials on the performance of electrochemical CO2 reduction to carbon monoxide

2021 ◽  
Vol 3 (10) ◽  
Author(s):  
Wasihun Abebe Hika ◽  
Abebe Reda Woldu
Keyword(s):  
Glassy Carbon ◽  
Anode Materials ◽  
Electrochemical Impedance ◽  
Value Added ◽  
Linear Sweep Voltammetry ◽  
Reduction Reaction ◽  
Counter Electrodes ◽  
Working Electrode ◽  
Electrochemical Co2 Reduction ◽  
The Impact

AbstractElectrochemical carbon dioxide reduction reaction (CO2RR) has been investigated for decades. CO2RR to value-added products is an indispensable option to address climate change and energy storage needs. We believed that CO2RR performance can be influenced by the anode materials employed for the oxidation half-reaction. Although H2O oxidation near-neutral solution does not being received greater attention, there is also an idea that it plays an important role not only in completing CO2 reduction cycle, but also to significantly influence the cathode during reduction. Therefore, the present study aimed to investigate the impact of three different anode materials (platinum, glassy carbon, and hematite) on the activity and selectivity of the gold cathode in an electrochemical CO2 reduction reaction. Linear sweep voltammetry and electrochemical impedance spectroscopy have been used to study electrocatalytic properties. In the meantime, x-ray diffraction is used to investigate the crystal planes of the as-prepared electrodes, while the work function and morphology of Au films were measured by atomic force microscope. Similar activity and selectivity to CO formation were observed when platinum and hematite were used as counter electrodes, while the least CO formation was recorded on the glassy carbon counter electrode. Graphic abstract The protons (H+) obtained from the oxidation of H2O onto these three different anodic materials (platinum, glassy carbon, hematite) are moving faster through the bulk of the solution to the working electrode. Consequently, the reaction occurred on the working electrode can be influenced by the number of protons coming from the anode.

scholarly journals General technoeconomic analysis for electrochemical coproduction coupling carbon dioxide reduction with organic oxidation

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Jonggeol Na ◽  
Bora Seo ◽  
Jeongnam Kim ◽  
Chan Woo Lee ◽  
Hyunjoo Lee ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Process Design ◽  
Oxidation Reaction ◽  
Value Added ◽  
Carbon Dioxide Reduction ◽  
Reduction Reaction ◽  
Economic Feasibility ◽  
Oxidation Reactions ◽  
Technoeconomic Analysis ◽  
Organic Oxidation

AbstractElectrochemical processes coupling carbon dioxide reduction reactions with organic oxidation reactions are promising techniques for producing clean chemicals and utilizing renewable energy. However, assessments of the economics of the coupling technology remain questionable due to diverse product combinations and significant process design variability. Here, we report a technoeconomic analysis of electrochemical carbon dioxide reduction reaction–organic oxidation reaction coproduction via conceptual process design and thereby propose potential economic combinations. We first develop a fully automated process synthesis framework to guide process simulations, which are then employed to predict the levelized costs of chemicals. We then identify the global sensitivity of current density, Faraday efficiency, and overpotential across 295 electrochemical coproduction processes to both understand and predict the levelized costs of chemicals at various technology levels. The analysis highlights the promise that coupling the carbon dioxide reduction reaction with the value-added organic oxidation reaction can secure significant economic feasibility.

scholarly journals Electrochemical Carbon Dioxide Reduction in Methanol at Cu and Cu2O-Deposited Carbon Black Electrodes

2019 ◽  
Vol 3 (1) ◽  
pp. 15 ◽  
Author(s):  
Naoki Uemoto ◽  
Mai Furukawa ◽  
Ikki Tateishi ◽  
Hideyuki Katsumata ◽  
Satoshi Kaneco
Keyword(s):  
Carbon Dioxide ◽  
Carbon Black ◽  
Reduction Method ◽  
Methyl Formate ◽  
Metallic Copper ◽  
Co2 Reduction ◽  
Carbon Dioxide Reduction ◽  
Casting Method ◽  
Electrochemical Co2 Reduction ◽  
Carbon Plate

The electrochemical reduction of carbon dioxide in methanol was investigated with Cu and Cu2O-supported carbon black (Vulcan XC-72) nanoparticle electrodes. Herein, Cu or a Cu2O-deposited carbon black catalyst has been synthesized by the reduction method for a Cu ion, and the drop-casting method was applied for the fabrication of a modified carbon black electrode. A catalyst ink solution was fabricated by dispersing the catalyst particles, and the catalyst ink was added onto the carbon plate. The pH of suspension was effective for controlling the Cu species for the metallic copper and the Cu2O species deposited on the carbon black. Without the deposition of Cu, only CO and methyl formate were produced in the electrochemical CO2 reduction, and the production of hydrocarbons could be scarcely observed. In contrast, hydrocarbons were formed by using Cu or Cu2O-deposited carbon black electrodes. The maximum Faraday efficiency of hydrocarbons was 40.3% (26.9% of methane and 13.4% of ethylene) at −1.9 V on the Cu2O-deposited carbon black catalyst. On the contrary, hydrogen evolution could be depressed to 34.7% under the condition.

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