Monica Padilla
University of New Mexico
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Publication
Featured researches published by Monica Padilla.
Journal of the American Chemical Society | 2014
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
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
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
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
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
Anna Zalineeva; Alexey Serov; Monica Padilla; Ulises Martinez; Kateryna Artyushkova; Stève Baranton; Christophe Coutanceau; Plamen Atanassov
Applied Catalysis B-environmental | 2015
Anna Zalineeva; Alexey Serov; Monica Padilla; Ulises Martinez; Kateryna Artyushkova; Stève Baranton; Christophe Coutanceau; Plamen Atanassov
Applied Catalysis B-environmental | 2016
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
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
Elena A. Baranova; Monica Padilla; Barr Halevi; Tariq Amir; Kateryna Artyushkova; Plamen Atanassov