A5048363159- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Nanomaterials for catalytic reactions
- Crystallography and molecular interactions
- Nanocluster Synthesis and Applications
- Advanced Photocatalysis Techniques
- Crystal structures of chemical compounds
- Synthesis and biological activity
- Nonlinear Optical Materials Research
- Structural and Chemical Analysis of Organic and Inorganic Compounds
- Phenothiazines and Benzothiazines Synthesis and Activities
- Ammonia Synthesis and Nitrogen Reduction
- Gold and Silver Nanoparticles Synthesis and Applications
- Copper-based nanomaterials and applications
- Metal complexes synthesis and properties
- Catalytic Processes in Materials Science
- Obstructive Sleep Apnea Research
- Thermal Radiation and Cooling Technologies
- Advanced Nanomaterials in Catalysis
- Molecular spectroscopy and chirality
- Nanoparticle-Based Drug Delivery
- Polyoxometalates: Synthesis and Applications
- Electrocatalysts for Energy Conversion
- Synthesis and Reactions of Organic Compounds
- Chemical Synthesis and Reactions
Universidade Federal do Estado do Rio de Janeiro
2023-2024
Universidade do Porto
2013-2023
Rede de Química e Tecnologia
2012-2023
University of Coimbra
2023
Centro Hospitalar de Vila Nova de Gaia
2023
National University of Tucumán
2014-2021
Consejo Nacional de Investigaciones Científicas y Técnicas
2014-2021
Instituto de Química Orgánica General
2019-2020
Instituto de Química y Fisicoquímica Biológicas
2019-2020
Instituto de Química del Noroeste Argentino
2014-2019
Superparamagnetic ferrite nanoparticles (MFe2O4, where M = Fe, Co, Mn) were synthesized through a novel one-step aqueous coprecipitation method based on the use of new type alkaline agent: alkanolamines isopropanolamine and diisopropanolamine. The role played by bases particles' size, chemical composition, magnetic properties was investigated compared directly with effect traditional inorganic base NaOH. MFe2O4 nanomaterials exhibited high colloidal stability, particle sizes in range 4–12...
Magnetic core-double shell silica nanosupports functionalized with amine and thiol groups successfully immobilized Au NPs, producing novel magnetically recyclable nanocatalysts for the reduction of 4-nitrophenol in water presence NaBH<sub>4</sub>.
This work reports the mastered design of novel water-dispersible superparamagnetic iron oxide nanomaterials with enhanced magnetic properties and reduced size. A straightforward cost-effective aqueous coprecipitation route was developed, based on use three new agents: polydentate bases diethanolamine, triethanolamine triisopropanolamine. Through selection these alkanolamines which presented different complexing properties, an improvement surface spin order could be achieved upon reduction...
Abstract A Ru supported on a magnetically separable chitosan‐based nanomaterial (Mn@CS@Ru) was prepared by wet impregnation based ionic gelation using sodium tripolyphosphate as cross‐linking agent. The of chitosan leads to supporting matrix promote the embedding manganese(II) ferrite and nanoparticles (NPs) electrostatic interactions. effects formulation method parameters fabrication process were investigated, resulting as‐prepared Mn@CS@Ru nanocatalyst characterized. catalytic activity...
This study describes nanocomposites of graphene flakes (GF) combined with CuS, Fe3O4 and CuS−Fe3O4 nanoparticles prepared by wet chemical methods. The and/or CuS were directly anchored onto GF without requiring additional treatment. composition, structure morphology the nanocomposites, as well pristine metal oxide/sulfide characterised X − ray photoelectron spectroscopy (XPS), Raman spectroscopy, Fourier transform infrared (FTIR), powder diffraction (XRD) scanning electron microscopy (SEM)...
Based on experimental and computational data, a complex network of intermolecular interactions has been rationalized for antipyrine compounds.
The strange tautomeric equilibrium behavior exhibited by a new o-hydroxyphenyl diazepine derivative when the compound is analyzed both in solution and solid state opens structural study of enol-imino–keto-enamine forms influence intermolecular interactions their equilibrium. expected enol-imino form, which enol part phenyl system strong O–H···N intramolecular hydrogen bond established, results most stable tautomer gas phase (theoretical calculations) was detected NMR spectroscopy dissolved...
A combined experimental and theoretical study cytotoxicity assays of diethylaminophenyl-based Schiff base Cu(<sc>ii</sc>) VO(<sc>iv</sc>) complexes are reported. The complex shows interesting chelate ring⋯π interactions in the crystal structure.
A Doença de Parkinson é neurodegenerativa, com sintomas motores (SM) e não (SNM). Estimulação Encefálica Profunda (EEP) implanta eletrodos para modular circuitos cerebrais. EEP no Núcleo Ventral Intermédio (EEP-VI) trata tremores, a globo pálido interno (EEP-GPi) melhora SM, núcleo subtalâmico (EEP-NST) atua em SM SNM, sendo o alvo preferencial. Objetivos: Avaliar visão atual acerca da motores: transtorno comportamental do sono REM (TCSR), Constipação Depressão, DP. Métodos: Esta revisão...
This study addresses the issue of reversal burden proof in environmental law, with an analysis grounds used by Superior Court Justice (STJ) for its application, consolidated creation Summary No. 618 2018. Among reference analyzed are objective liability, Consumer Protection Code, and precautionary principle. The topic is great relevance current national context, where preservation a priority. However, although environment essential constitutional right, it crucial that protection does not...
Obesogenic environments such as Westernized diets, overnutrition, and exposure to glycation during gestation lactation can alter peripheral neuroendocrine factors in offspring, predisposing for metabolic diseases adulthood. Thus, we hypothesized that obesogenic the perinatal period reprograms offspring energy balance mechanisms. Four rat models were studied: maternal diet-induced obesity (DIO); early-life induced by postnatal overfeeding; glycation; overfeeding combined with glycation....
We report the application of Ru/CNT for catalytic reduction nitroarenes and electrocatalytic oxygen reactions (ORR/OER).