Multi-shelled CuO microboxes for carbon dioxide reduction to ethylene

Tan, Dongxing; Zhang, Jianling; Yao, Lei; Tan, Xiuniang; Cheng, Xiuyan; Wan, Qiang; Han, Buxing; Zheng, Lirong; Zhang, Jing

doi:10.1007/s12274-020-2692-1

Cited by 71 publications

(50 citation statements)

References 45 publications

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“…Figure S6 presents the Cu LMM profile of the spent catalyst. Two characteristics peaks at 917.3 eV and 916.1 eV can be resolved from the Cu LMM curve, which can be assigned to Cu(0) and Cu(I) [16] . These further confirm that the original CuO active phase has been partially reduced to Cu 2 O and metallic Cu in the long‐term electrochemical CO 2 reduction test.…”

Section: Resultssupporting

confidence: 61%

“…Two dominating characteristic peaks for Cu 2p 1/2 and Cu 2p 3/2 can be observed at 954.0 eV and 934.0 eV with a peak separation of 20.0 eV, confirming that Cu (II) is the chemical valence state for copper species [10] . As indicated in Figure 4(b), three split peaks can be resolved from the O 1s profiles at the binding energies of 529.7 eV, 531.1 eV and 532.0 eV, which are associated with lattice oxygen (O lat ), oxygen vacancies (OVs) and adsorbed oxygen (O ads ), respectively [16] . Figure 4(c) shows the distribution of oxygen species in the different CuO catalysts.…”

Section: Resultsmentioning

confidence: 58%

“…also demonstrated the reduction of active CuO to Cu 2 O and metallic Cu in the long‐term CO 2 RR test. The catalytic activity of the spent catalyst could be restored by thermal annealing of the used working electrode in the muffle furnace at 350 °C for 0.5 h. XRD analysis confirmed that the reduced Cu 2 O and metallic Cu had been re‐oxidized to CuO by thermal annealing [16] . More efforts such as morphology tuning, particle size and grain boundary regulation, and surface engineering are also critically necessary in future work to improve the stability of the desired catalyst.…”

Section: Resultsmentioning

confidence: 96%

“…reported that Cu NPs developed by the citrate complex method owned smaller particle sizes (7.9–15.3 nm) and exhibited a high FE CO (54.7 %–70.6 %) at −0.6 V vs. RHE [30] . OD Cu, multi‐shelled CuO and Cu NPs had also been prepared by the thermal annealing, hydrothermal, and precipitation methods, and their FE CO were in the range of 22.0 %–46.7 % [16,31] . Xiao et al.…”

Section: Resultsmentioning

confidence: 99%

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Syngas Production from Electrochemical CO₂ Reduction on Copper Oxide Electrodes in Aqueous Solution

et al. 2021

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Electrochemical CO2 reduction to value‐added chemicals and fuels using renewable energy represents a promising strategy for reducing CO2 emissions and achieving effective energy storage. In this work, nano‐sized CuO catalysts were prepared by using the homogeneous precipitation method for electrochemical CO2 reduction to CO. The CO2 reduction studies combined with the characterization results show that structure‐activity relationships of the CuO catalysts depend on the calcination temperature. The as‐synthesized CuO catalysts calcined at different temperatures are capable of reducing CO2 to generate syngas with tunable CO/H2 ratios of 1 : 2 to 2 : 1. The desired CuO‐400 catalyst exhibits good morphology, small particle size, and enriched oxygen‐vacancy defects and, therefore, shows good performance for electrochemical CO2 reduction to CO. Under the given potential of −0.93 V vs. RHE, CuO‐400 exhibits good reduction activity and selectivity with a great electrochemically active surface area normalized CO partial current density of 1.44 mA/cm2 and a high CO faradaic efficiency of 48.2 %. The deactivation of CuO‐400 in the long‐term test is associated with the increase in particle size, the reduction of CuO to Cu2O and metallic Cu, and the coverage of surface active sites by the formed carbonate species. Our findings indicate that CuO catalysts with tunable physicochemical properties are promising candidates for electrochemical CO2 reduction to produce syngas.

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Section: Resultssupporting

confidence: 61%

Section: Resultsmentioning

confidence: 58%

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

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Syngas Production from Electrochemical CO₂ Reduction on Copper Oxide Electrodes in Aqueous Solution

et al. 2021

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“…[ 33 ] Then, HoMSs with abundant chemical compositions as well as various geometry structures, phase structures, and surface structures have been successfully designed and fabricated. [ 34–40 ] Despite the numerous achievements of HoMSs, the exploration for the structure–performance correlation of HoMSs has never stopped. [ 41–44 ]…”

Section: Introductionmentioning

confidence: 99%

Small Structures Bring Big Things: Performance Control of Hollow Multishelled Structures

et al. 2020

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Hollow multishelled structures (HoMSs) have gained numerous achievements in broad scientific research fields. In the past decade, the rapid developments of synthetic methods and advanced characterization technologies have enriched HoMS family with abundant chemical compositions and geometric structures. In addition, the control in phase structure and surface structure of HoMSs have also been reported in recent years. With great efforts devoted to controlling the compositional and structural characteristics, such as shell composition, shell number, shell thickness, and intershell space, HoMSs have displayed their intrinsic temporal–spatial nature and proven to be fruitful in optimizing mass transport, storage, and release. This review first summarizes the compositional and structural control of HoMSs in three levels, that is, building subunits, assembled functional shells, and HoMSs. Subsequentially, the essential influence of composition and structure on mass transport, storage, and release is deeply discussed by highlighting the application of HoMSs in energy storage, catalysis, electromagnetic wave absorption, and drug delivery. Finally, the challenges and opportunities in the future development of HoMSs are forecasted.

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Recent Progresses in Electrochemical Carbon Dioxide Reduction on Copper‐Based Catalysts toward Multicarbon Products

Wang

et al. 2021

Adv Funct Materials

184

116

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Electrochemical carbon dioxide reduction reaction (CO2RR) offers a promising way of effectively converting CO2 to value‐added chemicals and fuels by utilizing renewable electricity. To date, the electrochemical reduction of CO2 to single‐carbon products, especially carbon monoxide and formate, has been well achieved. However, the efficient conversion of CO2 to more valuable multicarbon products (e.g., ethylene, ethanol, n‐propanol, and n‐butanol) is difficult and still under intense investigation. Here, recent progresses in the electrochemical CO2 reduction to multicarbon products using copper‐based catalysts are reviewed. First, the mechanism of CO2RR is briefly described. Then, representative approaches of catalyst engineering are introduced toward the formation of multicarbon products in CO2RR, such as composition, morphology, crystal phase, facet, defect, strain, and surface and interface. Subsequently, key aspects of cell engineering for CO2RR, including electrode, electrolyte, and cell design, are also discussed. Finally, recent advances are summarized and some personal perspectives in this research direction are provided.

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Multi-shelled CuO microboxes for carbon dioxide reduction to ethylene

Cited by 71 publications

References 45 publications

Syngas Production from Electrochemical CO₂ Reduction on Copper Oxide Electrodes in Aqueous Solution

Syngas Production from Electrochemical CO₂ Reduction on Copper Oxide Electrodes in Aqueous Solution

Small Structures Bring Big Things: Performance Control of Hollow Multishelled Structures

Recent Progresses in Electrochemical Carbon Dioxide Reduction on Copper‐Based Catalysts toward Multicarbon Products

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Multi-shelled CuO microboxes for carbon dioxide reduction to ethylene

Cited by 71 publications

References 45 publications

Syngas Production from Electrochemical CO2 Reduction on Copper Oxide Electrodes in Aqueous Solution

Syngas Production from Electrochemical CO2 Reduction on Copper Oxide Electrodes in Aqueous Solution

Small Structures Bring Big Things: Performance Control of Hollow Multishelled Structures

Recent Progresses in Electrochemical Carbon Dioxide Reduction on Copper‐Based Catalysts toward Multicarbon Products

Contact Info

Product

Resources

About

Syngas Production from Electrochemical CO₂ Reduction on Copper Oxide Electrodes in Aqueous Solution

Syngas Production from Electrochemical CO₂ Reduction on Copper Oxide Electrodes in Aqueous Solution