Potential‐Dependent Morphology of Copper Catalysts During CO₂ Electroreduction Revealed by In Situ Atomic Force Microscopy

Angewandte Chemie International Edition, Год журнала: 2020, Номер 60(5), С. 2561 - 2568

Опубликована: Окт. 9, 2020

Electrochemical AFM is a powerful tool for the real-space characterization of catalysts under realistic electrochemical CO2 reduction (CO2 RR) conditions. The evolution structural features ranging from micrometer to atomic scale could be resolved during RR. Using Cu(100) as model surface, distinct nanoscale surface morphologies and their potential-dependent transformations granular smoothly curved mound-pit surfaces or structures with rectangular terraces are revealed RR in 0.1 m KHCO3 . density undercoordinated copper sites shown increase decreasing potential. In situ atomic-scale imaging reveals specific adsorption occurring at cathodic potentials impacting observed catalyst structure. These results show complex interrelation morphology, structure, defect density, applied potential, electrolyte catalysts.

Язык: Английский

---

Carbon-Based Materials for Electrochemical Reduction of CO₂ to C₂₊ Oxygenates: Recent Progress and Remaining Challenges

ACS Catalysis, Год журнала: 2021, Номер 11(4), С. 2076 - 2097

Опубликована: Фев. 2, 2021

Electrochemical reduction of CO2 to multicarbon (C2+) products is desirable because the higher energy density and economic value C2+ significant scientific issue for coupling multicarbons. However, efficient conversion into remains challenging difficulty in C–C coupling. Recently, numerous papers have reported carbon-based materials production from electrochemical reduction. Because unique properties production, can be used as a potential alternative electrocatalytic CO2. This Review summarized recent progresses formation oxygenates on materials. In this Review, we highlighted strategies available achieving electrocatalysts revealed relationships between intermediate adsorption selectivity oxygenate Moreover, provided understandings fabricating active sites related mechanisms generation. The remaining challenges opportunities were discussed.

Язык: Английский

---

Towards artificial photosynthesis: Sustainable hydrogen utilization for photocatalytic reduction of CO2 to high-value renewable fuels

Chemical Engineering Journal, Год журнала: 2020, Номер 402, С. 126184 - 126184

Опубликована: Июль 8, 2020

Язык: Английский

---

Photocatalytic and electrocatalytic transformations of C1 molecules involving C–C coupling

Energy & Environmental Science, Год журнала: 2020, Номер 14(1), С. 37 - 89

Опубликована: Окт. 31, 2020

Selective transformation of one-carbon (C1) molecules, which are abundant or easily available and inexpensive carbon feedstocks, into value-added multi-carbon (C2+) compounds is a very attractive but highly challenging research target. Photocatalysis electrocatalysis have offered great opportunities for the activation controllable C–C coupling C1 molecules under mild environmentally benign conditions. This article provides critical review on recent advances in photocatalytic electrocatalytic conversions major including CO, CO2, CH4, CH3OH HCHO, C2+ compounds, such as C2H4, C3H6, ethanol ethylene glycol, play essential roles current chemical energy industry. Besides photocatalysts electrocatalysts reported these conversions, structure–performance relationships key factors that control activity product selectivity analysed to provide insights rational design more efficient catalysts synthesis from feedstocks. The active species, reaction intermediates catalyst-functioning mechanism discussed deepen understanding chemistry selective presence solar electrical energy.

Язык: Английский

---

Electrochemical CO₂-to-CO conversion: electrocatalysts, electrolytes, and electrolyzers

Journal of Materials Chemistry A, Год журнала: 2020, Номер 8(31), С. 15458 - 15478

Опубликована: Янв. 1, 2020

Recent progress in the mechanism, catalysts, electrolytes and electrolyzers of CO₂ electroreduction to CO has been reviewed.

Язык: Английский

---