What question did this study set out to answer?

To improve methane selectivity in CO2 electroreduction by synthesizing single-type active sites on a conductive framework to stabilize reaction intermediates.

September 25, 2020Angewandte Chemie

Highly Selective CO2 Electroreduction to CH4 by In Situ Generated Cu2O Single‐Type Sites on a Conductive MOF: Stabilizing Key Intermediates with Hydrogen Bonding

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JYJun‐Dong YiUniversity of Science and Technology of China RXRuikuan XieChinese Academy of Sciences ZXZailai XieShihezi University

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Implication

Mechanistic study reveals 73% methane selectivity in carbon dioxide electroreduction using copper oxide quantum dots on a conductive MOF, suggesting stabilization of reaction intermediates.

Key Points

To improve methane selectivity in CO2 electroreduction by synthesizing single-type active sites on a conductive framework to stabilize reaction intermediates.
Synthesized 3.5 nm Cu2O(111) quantum dots in situ on a porous conductive copper-based metal–organic framework (CuHHTP).
Evaluated catalytic performance during CO2 electroreduction at -1.4 V vs. RHE.
Tracked reaction intermediates and reaction mechanisms using operando infrared spectroscopy and density functional theory (DFT) calculations.
Achieved a 73% selectivity toward CH4 with a partial current density of 10.8 mA cm^-2 at -1.4 V vs. RHE.
Demonstrated that Cu2O(111) sites and hydrogen bonding effectively stabilize key intermediates (*CH2O and *OCH3) to promote CH4 generation over CO.

Cite This Study

Yi et al. (2020) studied this question.

synapsesocial.com/papers/69ded0d6488ed2d92be940cc https://doi.org/10.1002/ange.202010601

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Implication

Mechanistic study reveals 73% methane selectivity in carbon dioxide electroreduction using copper oxide quantum dots on a conductive MOF, suggesting stabilization of reaction intermediates.

Highly Selective CO2 Electroreduction to CH4 by In Situ Generated Cu2O Single‐Type Sites on a Conductive MOF: Stabilizing Key Intermediates with Hydrogen Bonding

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Cite This Study

Highly Selective CO2 Electroreduction to CH4 by In Situ Generated Cu2O Single‐Type Sites on a Conductive MOF: Stabilizing Key Intermediates with Hydrogen Bonding

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