An experimental study of electroreduction of CO2 to HCOOH on SnO2/C in presence of alkali metal cations (Li+, Na+, K+, Rb+ and Cs+) and anions (HCO3−, Cl−, Br− and I−)

Zhang, Qi; Shao, Xiaolin; Yi, Jin; Liu, Yuyu; Zhang, Jiujun

doi:10.1016/j.cjche.2020.04.015

Cited by 17 publications

(12 citation statements)

References 28 publications

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“…Both short-and medium-range cation-induced interactions account for an equivalent stabilizing effect. Instead, in the absence of cations, the medium-range *CO 2 --dipole/electric field interaction only accounts for a weaker stabilization (-0.2 eV), unable to open the CO 2 reduction pathway (Supplementary Note 2, Supplementary equation (8) and Supplementary Fig. 12).…”

Section: Resultsmentioning

confidence: 99%

“…We can instead estimate the energy of a cation at the OHP at U = 0 V versus SHE from our AIMD simulations, as we specifically inserted an alkali metal at the OHP, which donates its valence electron to the solvation layer (equation (7); the gold surface is represented by the symbol *, and the solvation layer is indicated by 'solv'). Thus, we can calculate the thermodynamic driving force for each cation to accumulate at the OHP as in equation (8). Considering the lowest energy configurations for Li + , Na + , K + and Cs + during the last 2 ps of the AIMD simulation, E OHP -E bulk (bulk electrolyte) correlates with the cation ionic radius 63 .…”

Section: Data Availabilitymentioning

confidence: 99%

“…To date, in the majority of the studies, alkali metals were employed and the activity trend found on different electrodes is Cs + > K + > Na + > Li + (refs. [5][6][7][8][9][10][11][12][13] ). Even though this trend is consistent in different research works, diverging theories have been proposed to explain through which molecular mechanism cations affect CO 2 reduction.…”

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confidence: 99%

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Absence of CO2 electroreduction on copper, gold and silver electrodes without metal cations in solution

et al. 2021

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Section: Resultsmentioning

confidence: 99%

Section: Data Availabilitymentioning

confidence: 99%

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Absence of CO2 electroreduction on copper, gold and silver electrodes without metal cations in solution

et al. 2021

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“…Sodium and potassium are alkali metals that can form, respectively, neutral and alkali salts, depending on the anion they react with [ 39 , 40 ]. The literature suggests that stresses from alkaline and neutral salts are two separate types of abiotic stressors [ 34 , 41 , 42 , 43 , 44 ].…”

Section: Discussionmentioning

confidence: 99%

Separate Effects of Sodium on Germination in Saline–Sodic and Alkaline Forms at Different Concentrations

Hitti

MacPherson

Lefsrud

2023

Plants

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Salinity negatively impacts crop productivity, yet neutral and alkali salt stresses are not often differentiated. To investigate these abiotic stresses separately, saline and alkaline solutions with identical concentrations of sodium (12 mM, 24 mM and 49 mM) were used to compare the seed germination, viability and biomass of four crop species. Commercial buffers containing NaOH were diluted to generate alkaline solutions. The sodic solutions tested contained the neutral salt NaCl. Romaine lettuce, tomato, beet, and radish were seeded and grown hydroponically for 14 days. A rapid germination was observed for alkaline solutions when compared to saline–sodic solutions. The highest plant viability recorded (90.0%) was for the alkaline solution, containing 12 mM Na+, and for the control treatment. Plant viability, with a value of 49 mM Na+ in saline–sodic and alkaline solutions, was the lowest (50.0% and 40.8% respectively), and tomato plants did not germinate. EC values were higher for the saline–sodic solutions than the alkaline solutions, yielding greater fresh mass per plant for all species, with the exception of beets grown in alkaline solution, with a value of 24 mM Na+. The fresh mass of romaine lettuce grown in the 24 mM Na+ saline–sodic solution was significantly greater than romaine lettuce grown in the alkaline solution with the same sodium concentration.

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“…For the cations, the majority of studies are dealing with alkali metals, with the conclusion that Cs + > K + > Na + > Li + 66–74 . The researchers also checked the effect of cations and proposed that there are three different theories concerning the mechanism as reviewed by Waegele et al, 75 even though the general trend is similar.…”

Section: Structure–activity Relationshipmentioning

confidence: 99%

Towards understanding of CO₂ electroreduction to C₂₊ products on copper‐based catalysts

Liu

Sang

et al. 2022

Battery Energy

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The electrochemical CO2 reduction reaction (CO2RR) has been regarded as a promising technique for converting CO2 into high‐value fuels and chemicals. Powered by renewable electricity, the CO2RR provides a viable strategy to mitigate the CO2 concentration in the atmosphere and close the anthropogenic carbon cycle. Recent studies exhibit that copper‐based catalysts are capable of reducing CO2 to C2+ products, such as ethylene and ethanol, which are of higher value compared with C1 products. The reaction process toward C2+ products involves the formation of key intermediate *CO, the C–C bonding, and the post‐C–C bonding to final products. This perspective is focusing on the mechanism leading to C2+ products, examining the evidence from in situ/operando spectroscopy and density functional theory calculations. The effects of Cu facet and electrolyte on catalytic performance are reviewed. An in depth discussion of mechanistic aspects of Cu catalyst is presented, shedding light on the intrinsic features of catalyst and electrode‐electrolyte interface, therefore moving towards an understanding of CO2RR at the atomic level.

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An experimental study of electroreduction of CO2 to HCOOH on SnO2/C in presence of alkali metal cations (Li+, Na+, K+, Rb+ and Cs+) and anions (HCO3−, Cl−, Br− and I−)

Cited by 17 publications

References 28 publications

Absence of CO2 electroreduction on copper, gold and silver electrodes without metal cations in solution

Absence of CO2 electroreduction on copper, gold and silver electrodes without metal cations in solution

Separate Effects of Sodium on Germination in Saline–Sodic and Alkaline Forms at Different Concentrations

Towards understanding of CO₂ electroreduction to C₂₊ products on copper‐based catalysts

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An experimental study of electroreduction of CO2 to HCOOH on SnO2/C in presence of alkali metal cations (Li+, Na+, K+, Rb+ and Cs+) and anions (HCO3−, Cl−, Br− and I−)

Cited by 17 publications

References 28 publications

Absence of CO2 electroreduction on copper, gold and silver electrodes without metal cations in solution

Absence of CO2 electroreduction on copper, gold and silver electrodes without metal cations in solution

Separate Effects of Sodium on Germination in Saline–Sodic and Alkaline Forms at Different Concentrations

Towards understanding of CO2 electroreduction to C2+ products on copper‐based catalysts

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Towards understanding of CO₂ electroreduction to C₂₊ products on copper‐based catalysts