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Dive into the research topics where Monica Padilla is active.

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Featured researches published by Monica Padilla.


Journal of the American Chemical Society | 2014

Self-Supported PdxBi Catalysts for the Electrooxidation of Glycerol in Alkaline Media

Anna Zalineeva; Alexey Serov; Monica Padilla; Ulises Martinez; Kateryna Artyushkova; Stève Baranton; Christophe Coutanceau; Plamen Atanassov

Highly active self-supported PdxBi catalysts are synthesized by the sacrificial support method. Self-supported PdxBi catalysts have a porous nanostructured morphology with high surface areas (in the range from 75 to 100 m(2) g(-1)), making PdxBi a state-of-the-art catalyst. Pd4Bi displays the highest activity toward glycerol oxidation. In situ Fourier transform infrared spectroscopy highlights the unique catalytic behavior of self-supported PdxBi materials due to their particular structure and morphology. The confinement of reactants and intermediates in pores acting as nanoreactors is responsible for the high selectivity as a function of the electrode potential: aldehyde and ketone at low potentials, hydroxypyruvate at moderate potentials, and CO2 at high potentials. Moreover, the selectivity depends on the electrode history: it is different for the positive potential scan direction than for the reverse direction, where the catalyst becomes selective toward the production of carboxylates.


Angewandte Chemie | 2014

Anode Catalysts for Direct Hydrazine Fuel Cells: From Laboratory Test to an Electric Vehicle

Alexey Serov; Monica Padilla; Aaron Roy; Plamen Atanassov; Tomokazu Sakamoto; Koichiro Asazawa; Hirohisa Tanaka

Novel highly active electrocatalysts for hydrazine hydrate fuel cell application were developed, synthesized and integrated into an operation vehicle prototype. The materials show in both rotating disc electrode (RDE) and membrane electrode assembly (MEA) tests the world highest activity with peak current density of 16,000 A g(-1) (RDE) and 450 mW cm(-2) operated in air (MEA).


Chemsuschem | 2014

Mechanistic Insight into Oxide-Promoted Palladium Catalysts for the Electro-Oxidation of Ethanol

Ulises Martinez; Alexey Serov; Monica Padilla; Plamen Atanassov

Recent advancements in the development of alternatives to proton exchange membrane fuel cells utilizing less-expensive catalysts and renewable liquid fuels, such as alcohols, has been observed for alkaline fuel cell systems. Alcohol fuels present the advantage of not facing the challenge of storage and transportation encountered with hydrogen fuel. Oxidation of alcohols has been improved by the promotion of alloyed or secondary phases. Nevertheless, currently, there is no experimental understanding of the difference between an intrinsic and a synergistic promotion effect in high-pH environments. This report shows evidence of different types of promotion effects on palladium electrocatalysts obtained from the presence of an oxide phase for the oxidation of ethanol. The correlation of mechanistic in situ IR spectroscopic studies with electrochemical voltammetry studies on two similar electrocatalytic systems allow the role of either an alloyed or a secondary phase on the mechanism of oxidation of ethanol to be elucidated. Evidence is presented for the difference between an intrinsic effect obtained from an alloyed system and a synergistic effect produced by the presence of an oxide phase.


ACS Catalysis | 2014

CO2 Electroreduction to Hydrocarbons on Carbon-Supported Cu Nanoparticles

Olga A. Baturina; Qin Lu; Monica Padilla; Le Xin; Wenzhen Li; Alexey Serov; Kateryna Artyushkova; Plamen Atanassov; Feng Xu; Albert Epshteyn; Todd H. Brintlinger; Mike Schuette; Greg E. Collins


Physical Chemistry Chemical Physics | 2012

Aerosol-derived Ni1−xZnx electrocatalysts for direct hydrazine fuel cells

Ulises Martinez; Koichiro Asazawa; Barr Halevi; Akinbayowa Falase; Boris Kiefer; Alexey Serov; Monica Padilla; Tim S. Olson; Abhaya K. Datye; Hirohisa Tanaka; Plamen Atanassov


Electrochemistry Communications | 2015

Nano-structured Pd-Sn catalysts for alcohol electro-oxidation in alkaline medium

Anna Zalineeva; Alexey Serov; Monica Padilla; Ulises Martinez; Kateryna Artyushkova; Stève Baranton; Christophe Coutanceau; Plamen Atanassov


Applied Catalysis B-environmental | 2015

Glycerol electrooxidation on self-supported Pd1Snx nanoparticules

Anna Zalineeva; Alexey Serov; Monica Padilla; Ulises Martinez; Kateryna Artyushkova; Stève Baranton; Christophe Coutanceau; Plamen Atanassov


Applied Catalysis B-environmental | 2016

Highly-active Pd-Cu electrocatalysts for oxidation of ubiquitous oxygenated fuels

Alexey Serov; Tristan Asset; Monica Padilla; Ivana Matanovic; Ulises Martinez; Aaron Roy; Kateryna Artyushkova; Marian Chatenet; Frédéric Maillard; Domnik Bayer; Carsten Cremers; Plamen Atanassov


Electrochimica Acta | 2016

Highly active and selective nickel molybdenum catalysts for direct hydrazine fuel cell

Tristan Asset; Aaron Roy; Tomokazu Sakamoto; Monica Padilla; Ivana Matanovic; Kateryna Artyushkova; Alexey Serov; Frédéric Maillard; Marian Chatenet; Koichiro Asazawa; Hirohisa Tanaka; Plamen Atanassov


Electrochimica Acta | 2012

Electrooxidation of ethanol on PtSn nanoparticles in alkaline solution: Correlation between structure and catalytic properties

Elena A. Baranova; Monica Padilla; Barr Halevi; Tariq Amir; Kateryna Artyushkova; Plamen Atanassov

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Alexey Serov

University of New Mexico

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Olga A. Baturina

United States Naval Research Laboratory

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Aaron Roy

University of New Mexico

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Koichiro Asazawa

Japan Atomic Energy Agency

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Frédéric Maillard

Centre national de la recherche scientifique

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Marian Chatenet

Centre national de la recherche scientifique

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