Efficient electroreduction of CO2 to C2-C3 products on Cu/Cu2O@N-doped graphene

Zhi, Wen-Ya; Liu, Yuting; Shan, Si-Li; Jiang, Chengjie; Wang, Huan; Lu, Jia‐Xing

doi:10.1016/j.jcou.2021.101594

Cited by 33 publications

(6 citation statements)

References 34 publications

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“…[209][210][211][212][213] Due to the poor electrical conductivity and stability during electrolysis, MOFs is more suitable to prepare metal/ metal oxide@C electrocatalysts as precursors. [214] In the process of calcination, the metal ions in MOFs can be converted into metal clusters/metal oxides and the organic ligands can be carbonized into porous carbon materials, effectively improving the electrical conductivity and providing a large number of catalytic active sites. [215] Li et al prepared a nitrogen-doped porous carbon hybrid composite (Cu 2 O/Cu@NC) based on benzimidazole-modified Cu-btc (btc = benzen-1,3,5-tricarboxylate).…”

Section: Application Of Cu 2 O-based Catalysts In Electrocatalytic Co...mentioning

confidence: 99%

Converting CO₂ into Value‐Added Products by Cu₂O‐Based Catalysts: From Photocatalysis, Electrocatalysis to Photoelectrocatalysis

Zhang

et al. 2023

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Considering the high energy demand in modern society and the widespread acceptance of "carbon neutrality" policies, reducing CO 2 into value-added products through "artificial carbon cycling" seems more reasonable and attractive. [3,4] Among the various methods of CO 2 resource utilization, photocatalysis (PC), electrocatalysis (EC) and photoelectrocatalysis (PEC), which can be operated at room temperature and atmospheric pressure, are considered to be a relatively feasible scheme. [5][6][7][8][9] Photocatalysis based on semiconductor materials can directly absorb solar light and generate charge carriers with redox capability, simultaneously accomplishing energy storage and carbon reduction. [10][11][12][13] Electrocatalysis can be driven by multiple forms of renewable energy (solar energy, water energy, wind energy, biomass energy, wave energy, tidal energy, etc.) to realize the conversion of CO 2 at the suitable negative potential. [14][15][16] Photo electrocatalysis is a special combination of photocatalysis and electrocatalysis, using a semiconductor electrode with light response capability to achieve efficient CO 2 reduction. [17,18] However, CO 2 exhibits chemical inertness due to its linear molecular and high CO bond energy, which is owing to the adoption of sp hybrid orbital when C atoms bond with O atoms. [19][20][21] Therefore, it is challenging to activate CO 2 and convert it into desirable products thermodynamically. [22] In addition, the CO 2 reduction reaction involves multi-step electron transfer, hydrogenation and CC bond coupling, which determines it has a complex and stochastic reaction path. Therefore, developing an ideal catalyst with high activity, stability, and economy for CO 2 reduction is necessary.Since Inoue et al. successfully converted CO 2 into formic acid, formaldehyde, methanol and methane under sunlight irradiation, many semiconductor materials for CO 2 reduction have been developed and evaluated. [23][24][25][26] The n-type semiconductors, including TiO 2 , ZnO 2 and SrTiO 3 , have attracted wide attention due to their low cost, high photostability and environmental harmlessness. [27] However, the excessive band gap limits their light response range, making them unsuitable for the CO 2 conversion systems driven by solar light. [28,29] Cuprous oxide (Cu 2 O), as one of the copper-based semiconductors with abundant reserves on the earth, has a suitable band gap to absorb visible light, which occupies 42-43% of the solar spectrum. More Converting CO 2 into value-added products by photocatalysis, electrocatalysis, and photoelectrocatalysis is a promising method to alleviate the global environmental problems and energy crisis. Among the semiconductor materials applied in CO 2 catalytic reduction, Cu 2 O has the advantages of abundant reserves, low price and environmental friendliness. Moreover, Cu 2 O has unique adsorption and activation properties for CO 2 , which is conducive to the generation of C 2+ products through CC coupling. This review introduces the basic principles of CO...

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Section: Application Of Cu 2 O-based Catalysts In Electrocatalytic Co...mentioning

confidence: 99%

Converting CO₂ into Value‐Added Products by Cu₂O‐Based Catalysts: From Photocatalysis, Electrocatalysis to Photoelectrocatalysis

Zhang

et al. 2023

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“…Error bars represent the deviation observed for the three experimental measurements along the experiments; Table S4: comparison of the CO 2 conversions with literature values, as a function of current densities and CO 2 flow rates. Unless otherwise stated, the membrane barrier used in our results shown in this table is the Sustainion AEM; References [10,14,24,32,33,[39][40][41][42]57,59,60,68,73,[84][85][86][87][88][89][90][91][92][93][94] are cited in the Supplementary Materials.…”

Section: Supplementary Materialsmentioning

confidence: 99%

Use of Chitosan as Copper Binder in the Continuous Electrochemical Reduction of CO2 to Ethylene in Alkaline Medium

et al. 2022

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This work explores the potential of novel renewable materials in electrode fabrication for the electrochemical conversion of carbon dioxide (CO2) to ethylene in alkaline media. In this regard, the use of the renewable chitosan (CS) biopolymer as ion-exchange binder of the copper (Cu) electrocatalyst nanoparticles (NPs) is compared with commercial anion-exchange binders Sustainion and Fumion on the fabrication of gas diffusion electrodes (GDEs) for the electrochemical reduction of carbon dioxide (CO2R) in an alkaline medium. They were tested in membrane electrode assemblies (MEAs), where selectivity to ethylene (C2H4) increased when using the Cu:CS GDE compared to the Cu:Sustainion and Cu:Fumion GDEs, respectively, with a Faradaic efficiency (FE) of 93.7% at 10 mA cm−2 and a cell potential of −1.9 V, with a C2H4 production rate of 420 µmol m−2 s−1 for the Cu:CS GDE. Upon increasing current density to 90 mA cm−2, however, the production rate of the Cu:CS GDE rose to 509 µmol/m2s but the FE dropped to 69% due to increasing hydrogen evolution reaction (HER) competition. The control of mass transport limitations by tuning up the membrane overlayer properties in membrane coated electrodes (MCE) prepared by coating a CS-based membrane over the Cu:CS GDE enhanced its selectivity to C2H4 to a FE of 98% at 10 mA cm−2 with negligible competing HER. The concentration of carbon monoxide was below the experimental detection limit irrespective of the current density, with no CO2 crossover to the anodic compartment. This study suggests there may be potential in sustainable alernatives to fossil-based or perfluorinated materials in ion-exchange membrane and electrode fabrication, which constitute a step forward towards decarbonization in the circular economy perspective.

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“…Due to the Lewis alkalinity of the N species, the modification of Cu-based materials with nitrogen-doped carbon (NC) has been proven to be an effective approach to optimize the catalyst performance. − For instance, by electrochemically reducing MOF-199 and N-doped graphene, Lu et al successfully prepared a Cu/Cu 2 O@NG catalyst. At −1.9 V vs RHE, the Faradic efficiency (FE) of this composite can reach 56% with a current density of −19 mA/cm 2 for C 2 –C 3 production . Unfortunately, such a simple combination cannot meet the needs of Cu-based materials to further improve their CO 2 –C 2 conversion efficiency. ,, Recently, Zhuang et al have achieved significant improvement in normalF normalE normalC 2 from 39 to 80% by constructing NC functional shells on Cu nanoparticles at 350 °C .…”

Section: Introductionmentioning

confidence: 99%

“…At −1.9 V vs RHE, the Faradic efficiency (FE) of this composite can reach 56% with a current density of −19 mA/cm 2 for C 2 − C 3 production. 18 Unfortunately, such a simple combination cannot meet the needs of Cu-based materials to further improve their CO 2 −C 2 conversion efficiency. 15,19,20 Recently, Zhuang et al have achieved significant improvement in FE C 2 from 39 to 80% by constructing NC functional shells on Cu nanoparticles at 350 °C.…”

Section: ■ Introductionmentioning

confidence: 99%

Cu₂O Nanoparticles Wrapped by N-Doped Carbon Nanotubes for Efficient Electroreduction of CO₂ to C₂ Products

Liu

Zhu

et al. 2023

ACS Appl. Mater. Interfaces

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Electroreduction of carbon dioxide (CO 2 ) to C 2 products (ethylene and ethanol) using efficient catalysts is a feasible approach to alleviate the climate crisis. Cuprous oxide nanoparticles (Cu 2 O NPs) are a promising catalyst for C 2 production but suffer from inherent selectivity and durability. To address this challenge, a Cu 2 O NPs-nitrogen-doped carbon nanotube (Cu 2 O NPs-NCNT) composite was prepared with carbon nanotubes (CNTs), Cu 2 O NPs, and phthalocyanine (Pc). The results indicate that Cu 2 O NPs-NCNT has excellent Faradic efficiency of C 2 products (77.61%) at −1.1 V vs RHE, which is 103.43% higher than that of Cu 2 O NPs. In the potentiostatic electrolysis combined with Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) measurements, Cu 2 O NPs-NCNT exhibited structural and catalytic current stability over 10 h. Finally, density functional theory calculations combined with XPS demonstrated that the NCNT in Cu 2 O NPs-NCNT can selectively absorb CO 2 through specific N−CO 2 interactions. Our work provides a unique strategy to promote the selectivity of Cu 2 O NPs for C 2 production by introducing N-doped linear carbon materials to fabricate composite.

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Efficient electroreduction of CO2 to C2-C3 products on Cu/Cu2O@N-doped graphene

Cited by 33 publications

References 34 publications

Converting CO₂ into Value‐Added Products by Cu₂O‐Based Catalysts: From Photocatalysis, Electrocatalysis to Photoelectrocatalysis

Converting CO₂ into Value‐Added Products by Cu₂O‐Based Catalysts: From Photocatalysis, Electrocatalysis to Photoelectrocatalysis

Use of Chitosan as Copper Binder in the Continuous Electrochemical Reduction of CO2 to Ethylene in Alkaline Medium

Cu₂O Nanoparticles Wrapped by N-Doped Carbon Nanotubes for Efficient Electroreduction of CO₂ to C₂ Products

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Efficient electroreduction of CO2 to C2-C3 products on Cu/Cu2O@N-doped graphene

Cited by 33 publications

References 34 publications

Converting CO2 into Value‐Added Products by Cu2O‐Based Catalysts: From Photocatalysis, Electrocatalysis to Photoelectrocatalysis

Converting CO2 into Value‐Added Products by Cu2O‐Based Catalysts: From Photocatalysis, Electrocatalysis to Photoelectrocatalysis

Use of Chitosan as Copper Binder in the Continuous Electrochemical Reduction of CO2 to Ethylene in Alkaline Medium

Cu2O Nanoparticles Wrapped by N-Doped Carbon Nanotubes for Efficient Electroreduction of CO2 to C2 Products

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Product

Resources

About

Converting CO₂ into Value‐Added Products by Cu₂O‐Based Catalysts: From Photocatalysis, Electrocatalysis to Photoelectrocatalysis

Converting CO₂ into Value‐Added Products by Cu₂O‐Based Catalysts: From Photocatalysis, Electrocatalysis to Photoelectrocatalysis

Cu₂O Nanoparticles Wrapped by N-Doped Carbon Nanotubes for Efficient Electroreduction of CO₂ to C₂ Products