0000000000042929

AUTHOR

Marcelo E. Domine

showing 3 related works from this author

Bimetallic Intersection in PdFe@FeO x ‐C Nanomaterial for Enhanced Water Splitting Electrocatalysis

2022

Supported Fe-doped Pd-nanoparticles (NPs) are prepared via soft transformation of a PdFe-metal oraganic framework (MOF). The thus synthesized bimetallic PdFe-NPs are supported on FeO@C layers, which are essential for developing well-defined and distributed small NPs, 2.3 nm with 35% metal loading. They are used as bifunctional nanocatalysts for the electrocatalytic water splitting process. They display superior mass activity for the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER), both in alkaline and acid media, compared with those obtained for benchmarking platinum HER catalyst, and ruthenium, and iridium oxide OER catalysts. PdFe-NPs also exhibit outstanding sta…

Oxygen evolution reactionCatàlisiNanotecnologiaRenewable Energy Sustainability and the EnvironmentDesenvolupament sostenibleElectrocatalysisHydrogen evolution reactionNanocompositesGeneral Environmental ScienceAdvanced Sustainable Systems
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‘Maya chemistry’ of organic–inorganic hybrid materials: isomerization, cyclicization and redox tuning of organic dyes attached to porous silicates

2013

[EN] Association of indigo and lapachol dyes to aluminosilicate clays yields polyfunctional organic – inorganic hybrid materials forming Maya Blue-like systems. Upon partial removing of clay's zeolitic water by moderate thermal treatment, abundant isomerization, cyclicization and oxidation reactions occur defining a‘ Maya chemistry whose complexity could explain the versatile use of such materials in the pre-Columbian cultures and permits the preparation of polyfunctional materials potentially usable for therapeutic and catalytic purposes.

Maya BlueChemistryGeneral Chemical EngineeringGeneral ChemistryThermal treatmentRedoxIndigoCatalysisAluminosilicatePINTURAMaya chemistryOrganic chemistryPorosityHybrid materialIsomerizationRSC Advances
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Redox tuning and species distribution in Maya Blue-type materials: a reassessment.

2013

Maya Blue-type specimens prepared from indigo (1 wt %) plus kaolinite, montmorillonite, palygorskite, sepiolite, and silicalite are studied. Liquid chromatography with diode array detection, ultra-performance liquid chromatography coupled with mass spectrometry, and pyrolysis-silylation gas chromatography-mass spectrometry analyses of the extracts from these specimens combined with spectral and solid-state voltammetry, electrochemical impedance spectroscopy, and scanning electrochemical microscopy techniques provide evidence for the presence of a significant amount of dehydroindigo and isatin accompanying indigo and other minority organic compounds in all samples. Solid-state electrochemist…

Isatingas chromatography mass spectrometryMagnesium CompoundsMass spectrometryIndigo CarmineUPLC-MSIndigoMass Spectrometrychemistry.chemical_compoundScanning electrochemical microscopyMagnesium SilicatesmedicineElectrochemistryHumansGeneral Materials ScienceKaolinChromatography High Pressure LiquidMaya BlueChromatographyChemistryIsatinSilicon CompoundsPalygorskitevoltammetry of microparticlesDielectric spectroscopyMontmorillonitePINTURABentoniteGas chromatography–mass spectrometryOxidation-Reductionmedicine.drugNuclear chemistryChromatography LiquidACS applied materialsinterfaces
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