Vanadium oxide integrated on hierarchically nanoporous copper for efficient electroreduction of CO<sub>2</sub> to ethanol

Yang, Qingcheng; Liu, Xunlin; Peng, Wei; Zhao, Yang; Liu, Zhixiao; Peng, Ming; Lu, Ying‐Rui; Chan, Ting‐Shan; Xu, Xiandong; Tan, Yongwen

doi:10.1039/d0ta09522b

Cited by 41 publications

(26 citation statements)

References 55 publications

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“…Additionally, vanadium oxide can facilitate the hydrolysis kinetics and provide hydrogen protons during electrochemical process, which has been considered important in surface catalytic reactions. [ 40 ] Inspired by the aforementioned discussions, we envisioned whether a rational modification of IrO 2 on VO x support could integrally construct a supported catalyst with strong oxide‐support interaction, and improve catalytic activity and durability.…”

Section: Introductionmentioning

confidence: 99%

Strong Oxide‐Support Interaction over IrO₂/V₂O₅ for Efficient pH‐Universal Water Splitting

et al. 2022

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Constructing strong oxide-support interaction (SOSI) is compelling for modulating the atomic configurations and electronic structures of supported catalysts. Herein, ultrafine iridium oxide nanoclusters (≈1 nm) are anchored on vanadium oxide support (IrO 2 /V 2 O 5 ) via SOSI. The as made catalyst, with a unique distorted IrO 2 structure, is discovered to significantly boost the performance for pH-universal oxygen evolution reaction (OER). Based on experimental results and theoretical calculations, the distorted IrO 2 active sites with flexible redox states in IrO 2 /V 2 O 5 server as electrophilic centers balance the adsorption of oxo-intermediates and effectively facilitate the process of O-O coupling, eventually propelling the fast turnover of water oxidation. As a result, IrO 2 /V 2 O 5 demonstrates not only ultralow overpotentials at 10 mA cm −2 (266 mV, pH = 0; 329 mV, pH = 7; 283 mV, pH = 14) for OER, but also high-performance overall water electrolysis over a broad pH range, with a potential of mere 1.50 V (pH = 0), 1.65 V (pH = 7) or 1.49 V (pH = 14) at 10 mA cm −2 . In addition, SOSI can simultaneously secure the distorted active sites and thus remarkably improving the catalytic stability, making it a promising strategy to develop high-performance catalytic systems.

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Section: Introductionmentioning

confidence: 99%

Strong Oxide‐Support Interaction over IrO₂/V₂O₅ for Efficient pH‐Universal Water Splitting

et al. 2022

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“…reported a hierarchically nanoporous Cu skeleton with large specific surface area, which not only provided the higher density of active sites but also accelerated the transport of the electron and reactant. [ 99 ] Moreover, the decoration of vanadium oxide further facilitates the water dissociation and adjusts the *H adsorption energy, which lowers the energy barrier for the intermediate formation and the subsequent C—C coupling process, as evidenced by the DFT calculations. Therefore, the resultant np‐Cu@VO 2 catalyst achieved a FE value of 30.1% for C 2 H 5 OH production with an ethanol partial current density of 16 mA cm −2 at −0.62 V versus RHE, which is a fourfold higher compared to the pristine nanoporous Cu.…”

Section: Electrocatalysismentioning

confidence: 97%

Rational‐Designed Principles for Electrochemical and Photoelectrochemical Upgrading of CO₂ to Value‐Added Chemicals

2022

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The chemical transformation of carbon dioxide (CO2) has been considered as a promising strategy to utilize and further upgrade it to value‐added chemicals, aiming at alleviating global warming. In this regard, sustainable driving forces (i.e., electricity and sunlight) have been introduced to convert CO2 into various chemical feedstocks. Electrocatalytic CO2 reduction reaction (CO2RR) can generate carbonaceous molecules (e.g., formate, CO, hydrocarbons, and alcohols) via multiple‐electron transfer. With the assistance of extra light energy, photoelectrocatalysis effectively improve the kinetics of CO2 conversion, which not only decreases the overpotentials for CO2RR but also enhances the lifespan of photo‐induced carriers for the consecutive catalytic process. Recently, rational‐designed catalysts and advanced characterization techniques have emerged in these fields, which make CO2‐to‐chemicals conversion in a clean and highly‐efficient manner. Herein, this review timely and thoroughly discusses the recent advancements in the practical conversion of CO2 through electro‐ and photoelectrocatalytic technologies in the past 5 years. Furthermore, the recent studies of operando analysis and theoretical calculations are highlighted to gain systematic insights into CO2RR. Finally, the challenges and perspectives in the fields of CO2 (photo)electrocatalysis are outlined for their further development.

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“…6). 33,[94][95][96] Catalytically, the formation of the *CHO intermediate and *OCH is the rate-determination step in producing CH 4 and CH 3 OH. Therefore, regulation of the adsorption energy of the *CO intermediate is the key to catalyzing deeply reduced C 1 products.…”

Section: Sacs For Deeply Reduced C 1 Productsmentioning

confidence: 99%

Single-atom catalysts: stimulating electrochemical CO₂ reduction reaction in the industrial era

Zhang

Wang

2022

J. Mater. Chem. A

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Vanadium oxide integrated on hierarchically nanoporous copper for efficient electroreduction of CO₂ to ethanol

Abstract: The np-Cu@VO2-5% hybrid electrocatalyst enables a 30.1% faradaic efficiency for ethanol production and an ethanol current density of −16 mA cm−2 at −0.62 V vs. RHE, corresponding to a 4-fold increase in activity compared to bare nanoporous Cu.

Cited by 41 publications

References 55 publications

Strong Oxide‐Support Interaction over IrO₂/V₂O₅ for Efficient pH‐Universal Water Splitting

Strong Oxide‐Support Interaction over IrO₂/V₂O₅ for Efficient pH‐Universal Water Splitting

Rational‐Designed Principles for Electrochemical and Photoelectrochemical Upgrading of CO₂ to Value‐Added Chemicals

Single-atom catalysts: stimulating electrochemical CO₂ reduction reaction in the industrial era

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Vanadium oxide integrated on hierarchically nanoporous copper for efficient electroreduction of CO2 to ethanol

Abstract: The np-Cu@VO2-5% hybrid electrocatalyst enables a 30.1% faradaic efficiency for ethanol production and an ethanol current density of −16 mA cm−2 at −0.62 V vs. RHE, corresponding to a 4-fold increase in activity compared to bare nanoporous Cu.

Cited by 41 publications

References 55 publications

Strong Oxide‐Support Interaction over IrO2/V2O5 for Efficient pH‐Universal Water Splitting

Strong Oxide‐Support Interaction over IrO2/V2O5 for Efficient pH‐Universal Water Splitting

Rational‐Designed Principles for Electrochemical and Photoelectrochemical Upgrading of CO2 to Value‐Added Chemicals

Single-atom catalysts: stimulating electrochemical CO2 reduction reaction in the industrial era

Contact Info

Product

Resources

About

Vanadium oxide integrated on hierarchically nanoporous copper for efficient electroreduction of CO₂ to ethanol

Strong Oxide‐Support Interaction over IrO₂/V₂O₅ for Efficient pH‐Universal Water Splitting

Strong Oxide‐Support Interaction over IrO₂/V₂O₅ for Efficient pH‐Universal Water Splitting

Rational‐Designed Principles for Electrochemical and Photoelectrochemical Upgrading of CO₂ to Value‐Added Chemicals

Single-atom catalysts: stimulating electrochemical CO₂ reduction reaction in the industrial era