Core–shell Cu@Cu<sub>2</sub>O nanoparticles embedded in 3D honeycomb-like N-doped graphitic carbon for photocatalytic CO<sub>2</sub> reduction

He, Lang; Zhang, Wenyuan; Zhao, Kristin; Liu, Sheng; Zhao, Yan

doi:10.1039/d1ta10514k

Cited by 18 publications

(9 citation statements)

References 62 publications

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“…Environmental pollution and energy-resource depletion arising from rapid industrialization have attracted widespread attention, especially the massive emission of CO 2 , a greenhouse gas that contributes to global warming. [1][2][3] Therefore, efforts have been focused on developing efficient and low-cost methods based on electrochemistry, thermochemistry, bioelectrochemistry, and photocatalysis to convert CO 2 into fuels and related chemicals. Photocatalytic methods, using solar energy to reduce CO 2 and store the products in fuel cells, have been extensively composite components, and enhanced activity of metal centers from electrostatic charge transfer on rGO.…”

Section: Introductionmentioning

confidence: 99%

Ni–Co Bimetallic Hydroxide Nanosheet Arrays Anchored on Graphene for Adsorption‐Induced Enhanced Photocatalytic CO₂ Reduction

Wang

Chen

et al. 2022

Advanced Materials

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Photocatalytic CO2 reduction can be implemented to use CO2, a greenhouse gas, as a resource in an energy‐saving and environmentally friendly way, in which suitable catalytic materials are required to achieve high‐efficiency catalysis. Insufficient accessible active sites on the catalyst surface and inhibited electron transfer severely limit the photocatalytic performance. Therefore, porous aerogels are constructed from composites comprising different ratios of Ni–Co bimetallic hydroxide (NixCoy) grown on reduced graphene oxide (GR) into a hierarchical nanosheet‐array structure using a facile in situ growth method. Detailed characterization shows that this structure exposes numerous active sites for enhanced adsorption‐induced photocatalytic CO2 reduction. Moreover, under the synergistic effect of Ni–Co bimetallic hydroxide, the CO2 adsorption capacity as well as charge‐carrier separation and transfer are excellent. As a result, the Ni7Co3–GR catalyst exhibits highly improved catalytic performance when compared with recently reported values, with a high CO release rate of 941.5 µmol h−1 g−1 and a selectivity of 96.3% during the photocatalytic reduction of CO2. This work demonstrates a new strategy for designing nanocomposites with abundant active sites structures.

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Section: Introductionmentioning

confidence: 99%

Ni–Co Bimetallic Hydroxide Nanosheet Arrays Anchored on Graphene for Adsorption‐Induced Enhanced Photocatalytic CO₂ Reduction

Wang

Chen

et al. 2022

Advanced Materials

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“…The peak of O 1s at 532.01 eV was assigned to lattice oxygen in Cu 2 O, and the other two peaks were identified as surface adsorbed hydroxyl (531.13 eV) and chemisorbed oxygen (533.01 eV). [28] For Cu-4, the two spin-orbit double peaks at 934.28 eV and 954.08 eV were assigned to Cu 2p3/2 and Cu 2p1/2, respectively. The characteristic peaks at 936.32 and 957.84 confirmed the presence of Cu 2 + .…”

Section: Resultsmentioning

confidence: 97%

Manipulating the Oxidation State of Cu_xO Catalysts to Optimize the Selectivity of Gaseous Products in Electrochemical CO₂ Reduction

Li²,

et al. 2023

Eur J Inorg Chem

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Copper‐based (Cu‐based) catalysts can efficiently convert carbon dioxide to multicarbon products by electrochemical reduction. In this paper, the electrocatalyst with the coexistence of three valence states of Cu(0)‐Cu(I)‐Cu(II) was successfully prepared by adjusting the experimental conditions. The catalyst was derived from Cu/Cu2O prepared on carbon cloth and exhibited excellent CO2 reduction performance. For carbon‐gaseous products, the Faradaic efficiencies for the Cu‐2 catalyst consisting of Cu(0)‐Cu(I)‐Cu(II) were 35.45±3.40 % at −1.66 V vs. RHE, of which 23.85±1.18 % for C2H4. And the synergistic effect of Cu(0)‐Cu(I)‐Cu(II) significantly improved the selectivity of the catalyst to C2H4. This paper provided an efficient method to rationally tune the valence state of Cu‐based catalysts to improve CO2 reduction performance.

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“…3D honeycomb-like CoFe/N-GC composites were prepared using a similar approach in our previous work. 35,36 4.0 g of PVP was dissolved in 120 mL of DI water, and then 3.0 g Fe(NO 3 ) 3 $9H 2 O and 3.0 g Co(NO 3 ) 2 $6H 2 O were added. The mixture was stirred at room temperature (RT) to form a homogeneous solution, then transferred to a forced air oven, and dried at 95 C to obtain the PVP-Co 2+ /Fe 3+ precursor.…”

Section: Synthesis Of 3d Honeycomb-like Cofe/n-gc Compositesmentioning

confidence: 99%

CoFe alloy nanoparticles encapsulated in a 3D honeycomb-like N-doped graphitic carbon framework for photocatalytic CO₂reduction

Zhang

et al. 2022

J. Mater. Chem. A

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Core–shell Cu@Cu₂O nanoparticles embedded in 3D honeycomb-like N-doped graphitic carbon for photocatalytic CO₂ reduction

Abstract: A facile polymer thermal treatment method has been employed to fabricate the 3D honeycomb-like nitrogen-doped graphitic carbons (N-GCs) with embedded core-shell Cu@Cu2O nanoparticles (NPs). The 3D honeycomb-like N-GC architectures can...

Cited by 18 publications

References 62 publications

Ni–Co Bimetallic Hydroxide Nanosheet Arrays Anchored on Graphene for Adsorption‐Induced Enhanced Photocatalytic CO₂ Reduction

Ni–Co Bimetallic Hydroxide Nanosheet Arrays Anchored on Graphene for Adsorption‐Induced Enhanced Photocatalytic CO₂ Reduction

Manipulating the Oxidation State of Cu_xO Catalysts to Optimize the Selectivity of Gaseous Products in Electrochemical CO₂ Reduction

CoFe alloy nanoparticles encapsulated in a 3D honeycomb-like N-doped graphitic carbon framework for photocatalytic CO₂reduction

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Core–shell Cu@Cu2O nanoparticles embedded in 3D honeycomb-like N-doped graphitic carbon for photocatalytic CO2 reduction

Abstract: A facile polymer thermal treatment method has been employed to fabricate the 3D honeycomb-like nitrogen-doped graphitic carbons (N-GCs) with embedded core-shell Cu@Cu2O nanoparticles (NPs). The 3D honeycomb-like N-GC architectures can...

Cited by 18 publications

References 62 publications

Ni–Co Bimetallic Hydroxide Nanosheet Arrays Anchored on Graphene for Adsorption‐Induced Enhanced Photocatalytic CO2 Reduction

Ni–Co Bimetallic Hydroxide Nanosheet Arrays Anchored on Graphene for Adsorption‐Induced Enhanced Photocatalytic CO2 Reduction

Manipulating the Oxidation State of CuxO Catalysts to Optimize the Selectivity of Gaseous Products in Electrochemical CO2 Reduction

CoFe alloy nanoparticles encapsulated in a 3D honeycomb-like N-doped graphitic carbon framework for photocatalytic CO2reduction

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Core–shell Cu@Cu₂O nanoparticles embedded in 3D honeycomb-like N-doped graphitic carbon for photocatalytic CO₂ reduction

Ni–Co Bimetallic Hydroxide Nanosheet Arrays Anchored on Graphene for Adsorption‐Induced Enhanced Photocatalytic CO₂ Reduction

Ni–Co Bimetallic Hydroxide Nanosheet Arrays Anchored on Graphene for Adsorption‐Induced Enhanced Photocatalytic CO₂ Reduction

Manipulating the Oxidation State of Cu_xO Catalysts to Optimize the Selectivity of Gaseous Products in Electrochemical CO₂ Reduction

CoFe alloy nanoparticles encapsulated in a 3D honeycomb-like N-doped graphitic carbon framework for photocatalytic CO₂reduction