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Highly selective plasma-activated copper catalysts for carbon dioxide reduction to ethylene

Mistry, Hemma ; Varela, Ana Sofia ; Bonifacio, Cecile S ; Zegkinoglou, Ioannis ; Sinev, Ilya ; Choi, Yong-Wook ; Kisslinger, Kim ; Stach, Eric A ; Yang, Judith C ; Strasser, Peter ; Cuenya, Beatriz Roldan

Nature communications, 2016-06, Vol.7 (1), p.12123-12123, Article 12123 [Periódico revisado por pares]

England: Nature Publishing Group

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Título:
Highly selective plasma-activated copper catalysts for carbon dioxide reduction to ethylene
Autor: Mistry, Hemma ; Varela, Ana Sofia ; Bonifacio, Cecile S ; Zegkinoglou, Ioannis ; Sinev, Ilya ; Choi, Yong-Wook ; Kisslinger, Kim ; Stach, Eric A ; Yang, Judith C ; Strasser, Peter ; Cuenya, Beatriz Roldan
Assuntos: Carbon dioxide ; Catalysis ; Center for Functional Nanomaterials ; Copper ; ethylene ; Grain boundaries ; Hydrocarbons ; INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY ; Morphology ; NANOSCIENCE AND NANOTECHNOLOGY ; Physics ; Plasma ; plasma processing ; Scanning electron microscopy ; Transmission electron microscopy
É parte de: Nature communications, 2016-06, Vol.7 (1), p.12123-12123, Article 12123
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
FG02-08ER15995; SC00112704
USDOE Office of Science (SC), Basic Energy Sciences (BES)
BNL-112610-2016-JA
Descrição: There is an urgent need to develop technologies that use renewable energy to convert waste products such as carbon dioxide into hydrocarbon fuels. Carbon dioxide can be electrochemically reduced to hydrocarbons over copper catalysts, although higher efficiency is required. We have developed oxidized copper catalysts displaying lower overpotentials for carbon dioxide electroreduction and record selectivity towards ethylene (60%) through facile and tunable plasma treatments. Herein we provide insight into the improved performance of these catalysts by combining electrochemical measurements with microscopic and spectroscopic characterization techniques. Operando X-ray absorption spectroscopy and cross-sectional scanning transmission electron microscopy show that copper oxides are surprisingly resistant to reduction and copper(+) species remain on the surface during the reaction. Our results demonstrate that the roughness of oxide-derived copper catalysts plays only a partial role in determining the catalytic performance, while the presence of copper(+) is key for lowering the onset potential and enhancing ethylene selectivity.
Editor: England: Nature Publishing Group
Idioma: Inglês

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Highly selective plasma-activated copper catalysts for carbon dioxide reduction to ethylene

Mistry, Hemma ; Varela, Ana Sofia ; Bonifacio, Cecile S ; Zegkinoglou, Ioannis ; Sinev, Ilya ; Choi, Yong-Wook ; Kisslinger, Kim ; Stach, Eric A ; Yang, Judith C ; Strasser, Peter ; Cuenya, Beatriz Roldan

England: Nature Publishing Group

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