Rational design of bimetallic catalysts for electrochemical CO2 reduction reaction: A review

Science China Chemistry, Journal Year: 2023, Volume and Issue: 66(5), P. 1288 - 1317

Published: March 28, 2023

Language: Английский

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Insights into Electrochemical CO₂ Reduction on Metallic and Oxidized Tin Using Grand-Canonical DFT and In Situ ATR-SEIRA Spectroscopy

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(11), P. 8353 - 8365

Published: May 14, 2024

Electrochemical CO2 reduction (CO2R) to formate is an attractive carbon emissions mitigation strategy due the existing market and price for formic acid. Tin effective electrocatalyst CO2R formate, but underlying reaction mechanism whether active phase of tin metallic or oxidized during openly debated. In this report, we used grand-canonical density functional theory attenuated total reflection surface-enhanced infrared absorption spectroscopy identify differences in vibrational signatures surface species on fully surfaces. Our results show that feasible both tin. We propose key difference between each termination catalyzed by surfaces limited electrochemical activation CO2, whereas slow reductive desorption formate. While exact degree oxidation unlikely be either oxidized, study highlights limiting behavior these two lays out features our predict will promote rapid catalysis. Additionally, highlight power integrating high-fidelity quantum mechanical modeling spectroscopic measurements elucidate intricate electrocatalytic pathways.

Language: Английский

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In-situ electrochemical transformation of F-modified metallic bismuth for highly-efficient CO2 electroreduction and Zn-CO2 battery

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 494, P. 153105 - 153105

Published: June 13, 2024

Language: Английский

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Integrating Electrochemical CO₂ Reduction on α-NiS with the Water or Organic Oxidations by Its Electro-Oxidized NiO(OH) Counterpart to an Artificial Photosynthetic Scheme

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(6), P. 8010 - 8021

Published: Feb. 5, 2023

Efficient hydrogen production, biomass up-conversion, and CO2-to-fuel generation are the key challenges of present decade. Electrocatalysis in aqueous electrolytes by choosing suitable transition-metal-based electrode materials remains green approach for trio sustainable developments. Given that, finding with multifunctional capability would be beneficial. Herein, nanocrystalline α-NiS, synthesized solvothermally, has been chosen as an material. As first step to construct electrolyzer, α-NiS deposited on conducting nickel foam (NF) used anode, under anodic potential, particles have lost sulfides electrolyte transform amorphous electro-derived NiO(OH) (NiO(OH)ED), confirmed different spectroscopic microscopic studies. In situ transformation NiO(OH)ED results enhancement electrochemical surface area not only becomes active toward oxygen evolution reaction (OER) at a moderate overpotential 264 mV (at 20 mA cm-2) but also can convert series biomass-derived organic compounds, namely, 2-hydroxymethylfurfural (HMF), 2-furfural (FF), ethylene glycol (EG), glycerol (Gly), industrially relevant feedstocks high (∼96%) Faradaic efficiency. During these oxidations, NiO(OH)ED/NF participate multiple-electron oxidation process (up 8e-) including C-C bond cleavages EG Gly. cathodic performance α-NiS/NF, structural integrity retained unaltered α-NiS/NF more effective cathode alkaline (HER) CO2 reduction (CO2R) compared its situ-derived NiO(OH)ED/NF. reduce predominantly CO even higher potential like -0.8 V (vs RHE). The fabricated cell electro-oxidized counterpart, α-NiS/NF(-)/(+)NiO(OH)ED/NF, is able show artificial photosynthetic scheme which anode oxidizes water O2 reduces majorly potential. this study, utilized single material perform multiple transformations.

Language: Английский

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Enhanced activation of H2O2 by bimetallic Cu2SnS3: A new insight for Cu (II)/Cu (I) redox cycle promotion

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 640, P. 750 - 760

Published: March 3, 2023

Language: Английский

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