Facet-dependent active sites of a single Cu2O particle photocatalyst for CO2 reduction to methanol

Wu, Yimin A.; McNulty, Ian; Liu, Cong; Lau, Kah Chun; Liu, Qi; Paulikas, A. P.; Sun, Chengjun; Cai, Zhonghou; Guest, Jeffrey R.; Ren, Yang; Stamenković, Vojislav R.; Curtiss, Larry A.; Liu, Yuzi; Rajh, Tijana

doi:10.1038/s41560-019-0490-3

Cited by 440 publications

(303 citation statements)

References 64 publications

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“…[ 42 ] Using DFT calculations and experimental data, they evaluated the selectivity toward CC dimerization on Cu nanocube electrocatalysts and proposed a synergistic effect between two neighboring facets; the (100)/(110) interface favors the COH‐CO coupling. Likewise, the relationship between the CO 2 reduction activity and facet dependency for methanol production was reported by Wu et al [ 43 ] They observed that the (110) facet of a single Cu 2 O electrocatalyst is active for CO 2 reduction to methanol while the (100) facet is inert. The oxidation state of the Cu active sites on the (110) facet changed from Cu + to Cu 2+ on co‐adsorption of CO 2 /H 2 O and changed from Cu 2+ to Cu + under 532 nm illumination, which indicates the bond breakage between the CO 2 and Cu (110) active sites.…”

Section: Mechanism On Co2rr On Cu Catalystsmentioning

confidence: 60%

Potential Link between Cu Surface and Selective CO₂ Electroreduction: Perspective on Future Electrocatalyst Designs

et al. 2020

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Electrochemical reduction of carbon dioxide (CO2RR) product distribution has been identified to be dependent on various surface factors, including the Cu facet, morphology, chemical states, doping, etc., which can alter the binding strength of key intermediates such as *CO and *OCCO during reduction. Therefore, in‐depth knowledge of the Cu catalyst surface and identification of the active species under reaction conditions aid in designing efficient Cu‐based electrocatalysts. This progress report categorizes various Cu‐based electrocatalysts into four main groups, namely metallic Cu, Cu alloys, Cu compounds (Cu + non‐metal), and supported Cu‐based catalysts (Cu supported by carbon, metal oxides, or polymers). The detailed mechanisms for the selective CO2RR are presented, followed by recent relevant developments on the synthetic procedures for preparing Cu and Cu‐based nanoparticles. Herein, the potential link between the Cu surface and CO2RR performance is highlighted, especially in terms of the chemical states, but other significant factors such as defective sites and roughened morphology of catalysts are equally considered during the discussion of current studies of CO2RR with Cu‐based electrocatalysts to fully understand the origin of the significant enhancement toward C2 formation. This report concludes by providing suggestions for future designs of highly selective and stable Cu‐based electrocatalysts for CO2RR.

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Section: Mechanism On Co2rr On Cu Catalystsmentioning

confidence: 60%

Potential Link between Cu Surface and Selective CO₂ Electroreduction: Perspective on Future Electrocatalyst Designs

et al. 2020

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“…Recently, Rajh et al used in-depth characterization techniques such as correlated scanning uorescence X-ray microscopy, EPR, and environmental TEM at atmospheric pressure to prove that the (110) facet of Cu 2 O was more active in the photoreduction of CO 2 with H 2 O to methanol, while the (100) facet was inert during this process. 206 Methanol was produced exclusively as the main product, which could be correlated with the fast desorption of methanol from the (110) facet. No other oxidized products such as HCHO and HCOOH were found in the system.…”

Section: Photocatalytic Co 2 Reduction Reactionmentioning

confidence: 95%

Well-defined Cu₂O photocatalysts for solar fuels and chemicals

et al. 2021

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“…With the enormous consumption of fossil fuels and the excessive emission of carbon dioxide, the energy crisis, and environmental pollution are becoming increasingly serious. [ 1–4 ] Developing efficient electrocatalysts for electrocatalytic reaction (such as: hydrogen evolution reaction [HER], carbon dioxide reduction reaction [CO 2 RR], oxygen reduction reaction [ORR], oxygen evolution reaction [OER], nitrogen reduction reaction [NRR] and etc) is considered to be one of the effective strategies to relieve these energy and environmental crisis. [ 5–12 ] However, electrocatalysis is far from practical application because the electrocatalytic properties of electrocatalysts in most cases are still moderate.…”

Section: Introductionmentioning

confidence: 99%

How to select effective electrocatalysts: Nano or single atom?

Wang

2020

Nano Select

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Electrocatalysis is viewed as one of the most effective ways to mitigate the energy problems and produce fuels or value‐added chemicals in a gentle manner. However, duo to the limited electrochemical properties of various systems, there is an intensive search for highly efficient electrocatalysts by more rational control over the topographic structure, chemical structure, and electronic structure. At present, the development of electrocatalysts mainly includes two directions: (1) nanoparticle electrocatalysts, and (2) single atom site electrocatalysts (SACs). Nanoparticle and SACs display their own advantages, and have been widely studied in the field of electrocatalysis. Considering the state‐of‐the‐art progress for nanoparticles or SACs, the selection of effective electrocatalysts has been a topic of great research value. Therefore, this paper summarizes the advantages, commonalities, and problems of nanoparticle and SACs, as well as their developing methods and experiences. In addition, the selection of nanoparticle and SACs in electrocatalytic reactions was discussed from the aspects of their respective influencing factors, active sites and synergistic effect. Finally, the research of nanoparticle and single atom sites electrocatalysts were prospected, providing a general guidance for the selection of efficient electrocatalysts.

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Facet-dependent active sites of a single Cu2O particle photocatalyst for CO2 reduction to methanol

Cited by 440 publications

References 64 publications

Potential Link between Cu Surface and Selective CO₂ Electroreduction: Perspective on Future Electrocatalyst Designs

Potential Link between Cu Surface and Selective CO₂ Electroreduction: Perspective on Future Electrocatalyst Designs

Well-defined Cu₂O photocatalysts for solar fuels and chemicals

How to select effective electrocatalysts: Nano or single atom?

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Facet-dependent active sites of a single Cu2O particle photocatalyst for CO2 reduction to methanol

Cited by 440 publications

References 64 publications

Potential Link between Cu Surface and Selective CO2 Electroreduction: Perspective on Future Electrocatalyst Designs

Potential Link between Cu Surface and Selective CO2 Electroreduction: Perspective on Future Electrocatalyst Designs

Well-defined Cu2O photocatalysts for solar fuels and chemicals

How to select effective electrocatalysts: Nano or single atom?

Contact Info

Product

Resources

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Potential Link between Cu Surface and Selective CO₂ Electroreduction: Perspective on Future Electrocatalyst Designs

Potential Link between Cu Surface and Selective CO₂ Electroreduction: Perspective on Future Electrocatalyst Designs

Well-defined Cu₂O photocatalysts for solar fuels and chemicals