Efficient electrochemical reduction of CO2 to ethanol on Cu nanoparticles decorated on N-doped graphene oxide catalysts

Yuan, Jing; Yang, Man-Ping; Zhi, Wen-Ya; Wang, Hui; Wang, Huan; Lu, Jia‐Xing

doi:10.1016/j.jcou.2019.07.014

Cited by 73 publications

(52 citation statements)

References 57 publications

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“…It is well known that the scarcity and cost of precious metals limit their industrial applications. To date, Cu‐based catalysts have most abundant product (e. g., HCOOH, CH 3 CH 2 OH, C 2 H 6 , C 2 H 4 ) in the prior reports [14–19] . At the same time, the poor selectivity and high over potential of the Cu‐based catalysts have also become a further stumbling block to its development.…”

Section: Introductionmentioning

confidence: 99%

The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO₂ Electroreduction

et al. 2020

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Single-atom metal and nitrogen co-doped carbon catalysts have caused an extensive research boom for electrochemical CO 2 reduction reaction (CO 2 RR). The diversity of metal-N coordination environment at high temperature limits the accurate study of electrocatalytic active sites. In this work, Fe porphyrin is anchored on a nitrogen-doped graphene substrate through the coordination between Fe and N atoms to form atomically dispersed Fe and N co-doped graphene nanosheets. The confinement anchoring effect of the nitrogen-doped graphene substrate prevents Fe atoms from agglomerating into Fe nanoparticles. Apart from that, the different Fe-N coordination environments and their catalytic effects on CO 2 RR are investigated by temperature changes. Electrochemical tests and density functional theory (DFT) calculations indicate that the atomically dispersed saturated Fe-N coordination catalyst have excellent performance for CO2RR and the Faradaic efficiency towards CO can up to 97 % at a potential of À 0.5 V (vs. reversible hydrogen electrode, RHE).

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Section: Introductionmentioning

confidence: 99%

The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO₂ Electroreduction

et al. 2020

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“…Yuan et al designed a hybrid nanocatalyst consisting of Cu NPs uniformly dispersed on the surface of sheet‐like‐pyridoxine (VB 6 )‐modified GO, GO‐VB 6 ‐Cu; pyridoxine was used as the nitrogen rich precursor to the N‐functionalized graphene sheet. [ 116 ] The resultant catalyst showed outstanding catalytic activity toward the electrochemical reduction of CO 2 to ethanol with FE of 56.3% at low overpotential of −0.250 V (vs RHE). The remarkable catalytic performance of GO‐VB 6 ‐Cu electrocatalyst was attributed to the presence of pyridinic N species, increased electrochemical active surface area (ECSA), and the presence of metallic Cu during the final reductive activation step.…”

Section: Surface Structure‐dependent Catalytic Activity/selectivity Omentioning

confidence: 99%

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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“…The carbon atoms with uncompensated bonds are usually present in the form of chemical or structural defects and can act as anchoring sites [117]. For example, although Cu nanoparticles (NPs) are prone to surface restructuring [73], the use of graphene oxide as a support has been shown to provide a stable ethanol production performance (FE 56.3% at −0.250 V vs. RHE) for 24 h [118]. The strong interaction between the Cu NPs and oxide sites on the graphene oxide creates a sufficient anchoring effect, thus stabilizing the size and morphology of the Cu NPs [116].…”

Section: Utilization Of Support Materialsmentioning

confidence: 99%

Towards the Large-Scale Electrochemical Reduction of Carbon Dioxide

Park

Wijaya

et al. 2021

Catalysts

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The severe increase in the CO2 concentration is a causative factor of global warming, which accelerates the destruction of ecosystems. The massive utilization of CO2 for value-added chemical production is a key to commercialization to guarantee both economic feasibility and negative carbon emission. Although the electrochemical reduction of CO2 is one of the most promising technologies, there are remaining challenges for large-scale production. Herein, an overview of these limitations is provided in terms of devices, processes, and catalysts. Further, the economic feasibility of the technology is described in terms of individual processes such as reactions and separation. Additionally, for the practical implementation of the electrochemical CO2 conversion technology, stable electrocatalytic performances need to be addressed in terms of current density, Faradaic efficiency, and overpotential. Hence, the present review also covers the known degradation behaviors and mechanisms of electrocatalysts and electrodes during electrolysis. Furthermore, strategic approaches for overcoming the stability issues are introduced based on recent reports from various research areas involved in the electrocatalytic conversion.

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Efficient electrochemical reduction of CO2 to ethanol on Cu nanoparticles decorated on N-doped graphene oxide catalysts

Cited by 73 publications

References 57 publications

The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO₂ Electroreduction

The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO₂ Electroreduction

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

Towards the Large-Scale Electrochemical Reduction of Carbon Dioxide

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Efficient electrochemical reduction of CO2 to ethanol on Cu nanoparticles decorated on N-doped graphene oxide catalysts

Cited by 73 publications

References 57 publications

The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO2 Electroreduction

The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO2 Electroreduction

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

Towards the Large-Scale Electrochemical Reduction of Carbon Dioxide

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Product

Resources

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The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO₂ Electroreduction

The Effect of the Coordination Environment of Atomically Dispersed Fe and N Co‐doped Carbon Nanosheets on CO₂ Electroreduction

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