Effective CO2 electroreduction toward C2H4 boosted by Ce-doped Cu nanoparticles

Shan, Jingjing; Shi, Yaoxuan; Li, Huiyi; Chen, Zhaoyu; Sun, Chengyue; Shuai, Yong; Wang, Zhijiang

doi:10.1016/j.cej.2021.133769

Cited by 32 publications

(17 citation statements)

References 41 publications

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“…[69][70][71][72] The reaction conditions and catalytic performances of Cu-based electrodes for the CO 2 to C 2 H 4 ECRR are summarized in Table 3. [66][67][68][69][70][71][72][73][74][75][76][77][78][79][80] Kim et al converted the morphology of cubic Cu 2 O nanoparticles (NPs) by slow oxidation to synthesize branched CuO NPs that could enhance C 2 H 4 production. [66] Figure 1a shows the synthesis scheme of branched CuO NPs from cubic Cu 2 O NPs.…”

Section: H 4 Productsmentioning

confidence: 99%

Recent Advances in Electrochemical, Photochemical, and Photoelectrochemical Reduction of CO₂ to C₂₊ Products

Han

Bang

Park

et al. 2023

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Section: H 4 Productsmentioning

confidence: 99%

Recent Advances in Electrochemical, Photochemical, and Photoelectrochemical Reduction of CO₂ to C₂₊ Products

Han

Bang

Park

et al. 2023

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“…Many studies have focused on transition-metal surfaces, − metal oxides, , or metal atoms coordinated on substrate surfaces. ,− However, the cost, abundance, and toxicity are always issues for these precious metals. Carbon-based catalysts have an advantage in environmental friendliness, durability, high mobility, and flexible synthesis of different motifs. − The modification of electronic structures is one of the straightforward strategies to improve material properties, and many have utilized B, N, or P atom doping toward sp 2 (graphene) and sp 3 (nanodiamond) carbon atoms for nonmetal catalysis. − However, studies concerning the combination of sp–sp 2 hybrid systems are relatively scarce.…”

Section: Introductionmentioning

confidence: 99%

Breaking BEP Relationship with Strong CO Binding and Low C–C Coupling Barriers for Ethanol Synthesis on Boron-Doped Graphyne: Bond Order Conservation and Flexible Orbital Hybridization

Namuangruk

Takahashi

2023

J. Phys. Chem. C

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For CO2 electroreduction to produce C2+ products, many nonmetal catalyst studies have focused on doping to sp2 and sp3 carbon materials for efficient carbon–carbon (CC) bond formation. However, studies on doping to sp hybridization are scarce, so we focused on graphyne (GRY), a stable carbon allotrope with sp–sp2 hybridization. We theoretically showed that ethanol could be selectively produced with a low limiting potential of −0.53 V with a very low CC coupling barrier of 0.46 eV by boron doping (B-GRY) to the highly abundant sp hybrid linker. Fascinatingly, strong CO binding energy coexisted with a low CC coupling barrier, thus breaking the Bell–Evans–Polanyi relation. This provides a new direction that differs from previous studies that utilized the weakening of CO binding energy to reduce the CC coupling barrier. Our calculations using an integrated crystal orbital bond index (ICOBI) showed that for 2*CO, the binding with B-GRY includes both σ donation and π back-donation, while only σ binding with B-GRY occurs for *COCO. The electrons responsible for the π back-donation for CO binding were used for the OC–CO bond formation after CC coupling. The reactive π electron on the sp hybrid linker has a chameleon-like feature changing its orbital hybridization to donate electrons depending on the adsorbate. We utilized the ICOBI along the ethanol production pathway for the first time and showed that the bond order conservation effectively promotes CC coupling on B-GRY.

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“…In the context of excessive consumption of fossil and emission of CO 2 , developing advanced CO 2 conversion and utilization technologies attracts significant attention but remains a challenge due to the strong chemical bond in the CO 2 molecule . Electrochemically reducing CO 2 (CO 2 RR) by the renewable electricity offers a promising approach to sustainably obtain value-added products including CO, HCOOH, C 2 H 4 , , etc. Among these products, ethylene, a chemical feedstock in high demand, , receives great interest in the petrochemical industry.…”

Section: Introductionmentioning

confidence: 99%

Efficiently Electroreducing CO₂ to Ethylene on Heterostructured CeO₂/CuO

Wang

Chen

Lin

et al. 2022

Ind. Eng. Chem. Res.

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Electrochemically converting CO2 into valuable hydrocarbon products offers a promising avenue to achieve the goal of carbon neutrality. However, enhancing the selectivity of a certain hydrocarbon product, particularly in ethylene, remains a challenge due to the limitation of the scaling relationship. Herein, we present a CuO–CeO2 hybrid catalyst, developed through interface engineering, that significantly improves the selectivity of ethylene. Benefiting from the structure nature of CeO2 quantum dots, abundant interfaces of CeO2 and CuO were constructed to provide more active sites for catalysis. Moreover, the strong interface interaction between ceria and CuO was experimentally demonstrated to enhance the adsorption of CO2 and CO and thus improve the intrinsic activity of CO2 reduction. The optimal catalyst delivered an impressing ethylene selectivity (49.7%) and partial current density (197 mA/cm2). More broadly, this work not only provides an effective strategy to construct abundant hetero-interfaces but also opens new possibilities for designing advanced hetero-catalysts for CO2 reduction.

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Effective CO2 electroreduction toward C2H4 boosted by Ce-doped Cu nanoparticles

Cited by 32 publications

References 41 publications

Recent Advances in Electrochemical, Photochemical, and Photoelectrochemical Reduction of CO₂ to C₂₊ Products

Recent Advances in Electrochemical, Photochemical, and Photoelectrochemical Reduction of CO₂ to C₂₊ Products

Breaking BEP Relationship with Strong CO Binding and Low C–C Coupling Barriers for Ethanol Synthesis on Boron-Doped Graphyne: Bond Order Conservation and Flexible Orbital Hybridization

Efficiently Electroreducing CO₂ to Ethylene on Heterostructured CeO₂/CuO

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Effective CO2 electroreduction toward C2H4 boosted by Ce-doped Cu nanoparticles

Cited by 32 publications

References 41 publications

Recent Advances in Electrochemical, Photochemical, and Photoelectrochemical Reduction of CO2 to C2+ Products

Recent Advances in Electrochemical, Photochemical, and Photoelectrochemical Reduction of CO2 to C2+ Products

Breaking BEP Relationship with Strong CO Binding and Low C–C Coupling Barriers for Ethanol Synthesis on Boron-Doped Graphyne: Bond Order Conservation and Flexible Orbital Hybridization

Efficiently Electroreducing CO2 to Ethylene on Heterostructured CeO2/CuO

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Product

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About

Recent Advances in Electrochemical, Photochemical, and Photoelectrochemical Reduction of CO₂ to C₂₊ Products

Recent Advances in Electrochemical, Photochemical, and Photoelectrochemical Reduction of CO₂ to C₂₊ Products

Efficiently Electroreducing CO₂ to Ethylene on Heterostructured CeO₂/CuO