M.A. Ponce

ORCID: 0000-0002-0262-7718
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About
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Research Areas
  • Gas Sensing Nanomaterials and Sensors
  • ZnO doping and properties
  • Catalytic Processes in Materials Science
  • Analytical Chemistry and Sensors
  • Advanced Chemical Sensor Technologies
  • Transition Metal Oxide Nanomaterials
  • Electronic and Structural Properties of Oxides
  • Ferroelectric and Piezoelectric Materials
  • Luminescence Properties of Advanced Materials
  • Acoustic Wave Resonator Technologies
  • Finance, Taxation, and Governance
  • Dielectric properties of ceramics
  • Advanced Nanomaterials in Catalysis
  • Multiferroics and related materials
  • Human Rights and Immigration
  • Advanced Photocatalysis Techniques
  • Administrative Law and Governance
  • Seismic Performance and Analysis
  • Vibration Control and Rheological Fluids
  • Semiconductor materials and devices
  • Polymer Nanocomposites and Properties
  • Microwave Dielectric Ceramics Synthesis
  • Electrical and Thermal Properties of Materials
  • Magnetic and transport properties of perovskites and related materials
  • Comparative constitutional jurisprudence studies

National University of Mar del Plata
2015-2024

Consejo Nacional de Investigaciones Científicas y Técnicas
2015-2024

Instituto de Investigaciones en Ciencia y Tecnología de Materiales
2015-2024

Centro Científico Tecnológico - Tandil
2023-2024

Universidad Nacional del Centro de la Provincia de Buenos Aires
2024

Universidade Federal de Itajubá
2023-2024

Universidade Federal de São Carlos
2023

Instituto de Investigaciones Físicas de Mar del Plata
2023

Hospital Universitario de Gran Canaria Doctor Negrín
2011

University of Buenos Aires
2009

Chemoselective oxidation of sulfides to sulfones under mild conditions is relevant for industry, but challenging owing the need establish catalysis mechanisms and optimize several experimental parameters.Herein, we report synthesis MWO 4 (M = Cd, Co, Cu, Mn, Ni, Zn) α-Ag 2 WO semiconductors as efficient selective catalysts this transformation in darkness.This catalytic process tolerant a broad range functionalized substituted even presence oxidative-sensitive functional groups.α-Ag NiWO were...

10.1016/j.apcata.2023.119038 article EN cc-by-nc-nd Applied Catalysis A General 2023-01-13

Here we combined experimental and theoretical results to correlate the morphological, optical, electronic properties of cerium oxide (CeO2) prepared by a microwave-assisted hydrothermal method with varying synthesis times. X-ray diffraction confirmed cubic structure without deleterious phases. Density functional theory simulations an indirect (K-L) bandgap energy 2.80 eV, electron transition between O-2p Ce-4f orbitals, which agrees value obtained using diffuse reflectance. Raman...

10.1021/acs.cgd.0c00165 article EN Crystal Growth & Design 2020-07-06

This study reports the synthesis of hybrid nanostructures composed cerium dioxide and microcrystalline cellulose prepared by microwave-assisted hydrothermal route under distinct temperature pH values. Their structural, morphological spectroscopic behaviors were investigated X-Rays Diffraction, Field Emission Gun Scanning Electron Microscopy, High-Resolution Transmission Fourier-Transform Infrared, Ultraviolet-Visible, Raman Positron Annihilation Lifetime spectroscopies to evaluate presence...

10.1038/s41598-022-07200-9 article EN cc-by Scientific Reports 2022-02-28

Objetivos Replicar el estudio de Gimeno1 sobre la teoría del «migrante sano» partiendo los resultados obtenidos en área salud Aragón. Nos proponemos estudiar si esta misma tendencia se reproduce población nuestra unidad gestión clínica. Material y métodos Estudio observacional retrospectivo basado datos historia digital. Se seleccionará una muestra representativa pacientes asignados a un centro salud. Los perfiles morbilidad estudiarán través sistema ACG. establecerán dos grupos comparación,...

10.55783/rcmf.18e1017 article ES Revista Clínica de Medicina de Familia 2025-04-22

The oxygen adsorption effects on the Schottky barriers height measurements for thick films gas sensors prepared with undoped nanometric SnO2 particles were studied. From electrical measurements, characteristics of intergranular potential developed at intergrains deduced. It is shown that determination effective activation energies from conduction vs. 1/temperature curves not generally a correct manner to estimate barrier heights. This due adsorption/desorption during heating and cooling...

10.1063/1.4746417 article EN cc-by AIP Advances 2012-08-09

Changes in the concentration of oxygen vacancies within grains polycrystalline SnO2, due to different atmosphere exposures, were detected using impedance and photoemission spectroscopies. From measured capacitance values, variations potential barrier widths could be determined. It is shown that under presence an rich atmosphere, at relatively low temperature, width intergranular barriers increase point become completely depleted carriers. With subsequent exposure vacuum, adopts a higher...

10.1063/1.4902150 article EN Journal of Applied Physics 2014-11-18
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