Net reduction of CO2 via its thermocatalytic and electrocatalytic transformation reactions in standard and hybrid processes

Tackett, Brian M.; Gomez, Elaine; Chen, Jingguang G.

doi:10.1038/s41929-019-0266-y

Cited by 376 publications

(262 citation statements)

References 37 publications

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“…[ 3–5 ] Among these strategies, the electrochemical CO 2 reduction reaction (CO 2 RR) coupled with renewable energy resources is considered as a promising solution to convert CO 2 into value‐added products, thereby achieving the net reduction of CO 2 emission. [ 6–8 ] To date, many efforts have been made to achieve the production of C 1 C 3 products from CO 2 RR. [ 9–14 ] It has also been reported that C 1 products, such as carbon monoxide (CO) and formate, typically show sufficiently high activity and selectivity.…”

Section: Introductionmentioning

confidence: 99%

Accelerating CO₂ Electroreduction to CO Over Pd Single‐Atom Catalyst

Lee

Liu

et al. 2020

Adv Funct Materials

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125

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The electrochemical conversion of carbon dioxide (CO 2 ) into value-added chemicals is regarded as one of the promising routes to mitigate CO 2 emission. A nitrogen-doped carbon-supported palladium (Pd) single-atom catalyst that can catalyze CO 2 into CO with far higher mass activity than its Pd nanoparticle counterpart, for example, 373.0 and 28.5 mA mg −1 Pd , respectively, at −0.8 V versus reversible hydrogen electrode, is reported. A combination of in situ X-ray characterization and density functional theory (DFT) calculation reveals that the PdN 4 site is the most likely active center for CO production without the formation of palladium hydride (PdH), which is essential for typical Pd nanoparticle catalysts. Furthermore, the welldispersed PdN 4 single-atom site facilitates the stabilization of the adsorbed CO 2 intermediate, thereby enhancing electrocatalytic CO 2 reduction capability at low overpotentials. This work provides important insights into the structure-activity relationship for single-atom based electrocatalysts.

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Section: Introductionmentioning

confidence: 99%

Accelerating CO₂ Electroreduction to CO Over Pd Single‐Atom Catalyst

Lee

Liu

et al. 2020

Adv Funct Materials

Self Cite

194

125

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“…Because of the serious risks associated with anthropogenic climate change, [1] av ariety of strategiesa re being considered to curtail CO 2 accumulationi nt he atmosphere. [5][6][7][8] However,t his approachi sc hallenging because CO 2 is at hermodynamically stable and kinetically inert molecule. [5][6][7][8] However,t his approachi sc hallenging because CO 2 is at hermodynamically stable and kinetically inert molecule.…”

Section: Introductionmentioning

confidence: 99%

“…[2][3][4] One of the most attractive strategies involves capture and conversion of CO 2 (as aC 1 source) to valorized chemicals and fuels. [5][6][7][8] However,t his approachi sc hallenging because CO 2 is at hermodynamically stable and kinetically inert molecule. [9,10] Electrochemical CO 2 conversion is appealing because it can be readily powered by clean,r enewable energy (e.g.,s olar,h ydroelectric, wind) [11][12][13][14] and may be performed atn ear-ambient temperatures, lowert han those required by thermalc onversion processes.…”

Section: Introductionmentioning

confidence: 99%

Intensified Electrocatalytic CO₂ Conversion in Pressure‐Tunable CO₂‐Expanded Electrolytes

et al. 2019

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Multimolar CO2 concentrations are achieved in acetonitrile solutions containing supporting electrolyte at relatively mild CO2 pressures (<5 MPa) and ambient temperature. Such CO2‐rich, electrolyte‐containing solutions are termed as CO2‐eXpanded Electrolytes (CXEs) because significant volumetric expansion of the liquid phase accompanies CO2 dissolution. Cathodic polarization of a model polycrystalline gold electrode‐catalyst in CXE media enhances CO2 to CO conversion rates by up to an order of magnitude compared with those attainable at near‐ambient pressures, without loss of selectivity. The observed catalytic process intensification stems primarily from markedly increased CO2 availability. However, a non‐monotonic correlation between the dissolved CO2 concentration and catalytic activity is observed, with an optimum occurring at approximately 5 m CO2 concentration. At the highest applied CO2 pressures, catalysis is significantly attenuated despite higher CO2 concentrations and improved mass‐transport characteristics, attributed in part to increased solution resistance. These results reveal that pressure‐tunable CXE media can significantly intensify CO2 reduction rates over known electrocatalysts by alleviating substrate starvation, with CO2 pressure as a crucial variable for optimizing the efficiency of electrocatalytic CO2 conversion.

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“…The greenhouse effect motivates a plenty of researches to lower the CO 2 level in the atmosphere . Electrochemical CO 2 reduction reaction (CO 2 RR) that can converse CO 2 into value‐added chemicals has been acknowledged to a promising pathway to achieve a neutral carbon cycle, which not only alleviates adverse impacts caused by excessive CO 2 , but also can store surplus renewable electricity in the form of chemicals such as CO, HCOOH, hydrocarbons, oxygenates and so on . Among these products from CO 2 reduction, CO is more accessible because selective production CO only needs two electron/proton transfers.…”

Section: Methodsmentioning

confidence: 84%

Nitrogen and Sulfur Co‐doped Carbon Nanosheets for Electrochemical Reduction of CO₂

et al. 2020

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Conversing CO 2 into value-added chemicals endows electrochemical CO 2 reduction reaction (CO 2 RR) with the potential to tackle over issues induced by the increased CO 2 level in the atmosphere. The associated technological viability of this process is highly dependent on exploring efficient electrocatalysts. In this work, we successfully synthesized nitrogen and sulfur co-doped carbon nanosheets (NS-CNSs), which are comprehensively characterized by a variety of characterization techniques. When used as the catalyst for CO 2 RR, the NS-CNSs exhibit remarkably high catalytic activity and selectivity with a Faradaic efficiency of~85.4 % for CO production and long-term durability. The superior performance of this material majorly originates from the unique nanosheets structure with large porosity and the co-doped S and N in the nanosheets, which exposed larger electrochemical activity surface areas and more active sites for promoting CO 2 reduction.

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Net reduction of CO2 via its thermocatalytic and electrocatalytic transformation reactions in standard and hybrid processes

Cited by 376 publications

References 37 publications

Accelerating CO₂ Electroreduction to CO Over Pd Single‐Atom Catalyst

Accelerating CO₂ Electroreduction to CO Over Pd Single‐Atom Catalyst

Intensified Electrocatalytic CO₂ Conversion in Pressure‐Tunable CO₂‐Expanded Electrolytes

Nitrogen and Sulfur Co‐doped Carbon Nanosheets for Electrochemical Reduction of CO₂

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Net reduction of CO2 via its thermocatalytic and electrocatalytic transformation reactions in standard and hybrid processes

Cited by 376 publications

References 37 publications

Accelerating CO2 Electroreduction to CO Over Pd Single‐Atom Catalyst

Accelerating CO2 Electroreduction to CO Over Pd Single‐Atom Catalyst

Intensified Electrocatalytic CO2 Conversion in Pressure‐Tunable CO2‐Expanded Electrolytes

Nitrogen and Sulfur Co‐doped Carbon Nanosheets for Electrochemical Reduction of CO2

Contact Info

Product

Resources

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Accelerating CO₂ Electroreduction to CO Over Pd Single‐Atom Catalyst

Accelerating CO₂ Electroreduction to CO Over Pd Single‐Atom Catalyst

Intensified Electrocatalytic CO₂ Conversion in Pressure‐Tunable CO₂‐Expanded Electrolytes

Nitrogen and Sulfur Co‐doped Carbon Nanosheets for Electrochemical Reduction of CO₂