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Ana Sofia Varela
Researcher at National Autonomous University of Mexico
Publications - 40
Citations - 6781
Ana Sofia Varela is an academic researcher from National Autonomous University of Mexico. The author has contributed to research in topics: Catalysis & Chemistry. The author has an hindex of 24, co-authored 33 publications receiving 4580 citations. Previous affiliations of Ana Sofia Varela include Technical University of Denmark & Technical University of Berlin.
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Journal ArticleDOI
Highly selective plasma-activated copper catalysts for carbon dioxide reduction to ethylene
Hemma Mistry,Ana Sofia Varela,Cecile S. Bonifacio,Ioannis Zegkinoglou,Ilya Sinev,Yong-Wook Choi,Kim Kisslinger,Eric A. Stach,Judith C. Yang,Peter Strasser,Beatriz Roldan Cuenya +10 more
TL;DR: The 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.
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Understanding activity and selectivity of metal-nitrogen-doped carbon catalysts for electrochemical reduction of CO 2
Wen Ju,Alexander Bagger,Guang-Ping Hao,Ana Sofia Varela,Ana Sofia Varela,Ilya Sinev,Volodymyr Bon,Beatriz Roldan Cuenya,Beatriz Roldan Cuenya,Stefan Kaskel,Jan Rossmeisl,Peter Strasser +11 more
TL;DR: N-coordinated, non-noble metal-doped porous carbons as efficient and selective electrocatalysts for CO2 to CO conversion hold promise for sustainable fuel production.
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Nanostructured electrocatalysts with tunable activity and selectivity
Hemma Mistry,Hemma Mistry,Ana Sofia Varela,Stefanie Kühl,Peter Strasser,Beatriz Roldan Cuenya +5 more
TL;DR: In this article, the use of nanostructured materials for improving catalytic reactivity is analysed in the context of model reactions of O2 reduction, CO2 electroreduction and ethanol oxidation.
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The importance of surface morphology in controlling the selectivity of polycrystalline copper for CO2 electroreduction
Wei Tang,Andrew A. Peterson,Ana Sofia Varela,Zarko P. Jovanov,Lone Bech,William J. Durand,Søren Dahl,Jens K. Nørskov,Ib Chorkendorff +8 more
TL;DR: It is found that a copper nanoparticle covered electrode shows better selectivity towards hydrocarbons compared with the two other studied surfaces, an electropolished copper electrode and an argon sputtered copper electrode.
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Metal‐Doped Nitrogenated Carbon as an Efficient Catalyst for Direct CO2 Electroreduction to CO and Hydrocarbons
Ana Sofia Varela,Nastaran Ranjbar Sahraie,Julian Steinberg,Wen Ju,Hyung Suk Oh,Peter Strasser +5 more
TL;DR: This study explores the kinetics, mechanism, and active sites of the CO2 electroreduction reaction (CO2RR) to syngas and hydrocarbons on a class of functionalized solid carbon-based catalysts and highlights a promising new class of low-cost, abundant electrocatalysts for synthetic fuel production from CO2.