A5078905151- Crystallization and Solubility Studies
- Conducting polymers and applications
- Electrochemical Analysis and Applications
- X-ray Diffraction in Crystallography
- Electrochemical sensors and biosensors
- Fuel Cells and Related Materials
- Analytical Chemistry and Sensors
- Concrete and Cement Materials Research
- Crystallography and molecular interactions
- Ionic liquids properties and applications
- Dye analysis and toxicity
- Corrosion Behavior and Inhibition
- Molecular Sensors and Ion Detection
- Membrane-based Ion Separation Techniques
- Extraction and Separation Processes
- Porphyrin and Phthalocyanine Chemistry
- Water Quality Monitoring and Analysis
- Concrete Corrosion and Durability
Central University of Ecuador
2021-2024
Universidad Nacional Autónoma de México
2018-2020
Universidad Autónoma de la Ciudad de México
2018
Eight Schiff bases, synthesized by the reaction of 4-aminoantipyrine with different cinnamaldehydes, were studied in solid state using vibrational spectroscopy (IR) and X-ray diffraction techniques. The analysis was extended to solution phase through ultraviolet-vis, fluorescence spectroscopy, cyclic voltammetry. Finally, crystal structures four compounds (3b, 3d, 3g, 3h) determined studied. In addition experimental study, theoretical calculations semiempirical method PM6/ZDO performed...
Chitosan biopolymer membranes reinforced with channel-selective ZIF-8 nanofillers were developed and characterized for use as separators in bioelectrochemical systems. The study focused on the application of chitosan combination nano reinforcement agents to improve membrane performance. Key properties such water retention, chemical thermal stability, surface resistance, antifouling ability, ionic conductivity mixed matrix (Composite ZIF-8/chitosan) evaluated compared commercial Nafion-117...
Abstract In this work 12 different ionic liquids (ILs) have been used added as co‐binders in the preparation of modified carbon paste electrodes (IL–CPEs) for voltammetric analysis dopamine Britton‐Robinson buffer. The studied were selected based on three main criteria: (1) increasing chain length alkyl substituents (studying 1‐ethylimidazolium and ethyl, propyl, butyl, hexyl decylmethylimidazolium bis(trifluoromethylsulfonyl)imide liquids); (2) nature counter ion (dicyanamide,...
Croton lechleri, commonly known as Dragon's blood, is a tree cultivated in the northwest Amazon rainforest of Ecuador and Peru. This produces deep red latex which composed different natural products such phenolic compounds, alkaloids, others. The chemical structures these found C. lechleri are promising corrosion inhibitors admiralty brass (AB), due to number heteroatoms π structures. In this work, three extracts were obtained, characterized phytochemically, employed novel green AB....
Abstract Nanostructured gold surfaces were prepared by potentiostatic, potentiodynamic or galvanostatic Au electrodeposition on glassy carbon electrodes. The nanostructured electrodes (nsAu/GC) used for the determination of dopamine (DA) in aqueous media. A directly proportional relationship was found between peak current DA (obtained square wave voltammetry, SWV) and its concentration all cases. However, best performance attained with potentiodynamically electrodeposited surfaces. SWV...
A finales del año 2023, el Gobierno Ecuatoriano por medio de la Agencia Nacional Regulación, Control y Vigilancia Sanitaria (ARSA), anunció contaminacion con plomo varios productos consumo, como leche, harina canela, así sus derivados. Varios laboratorios e instituciones regularorias desarrollaron aplicaron metodos precisos para determinacion este metal tóxico en tipo matrices. En trabajo se presenta, un método fácil, bajo costo tratar muestras alimentarias medicion Pb2+ Cd2+, fines...
El análisis de datos experimentales mediante ajuste no lineal es poco común, quizá una las causas que se requiere programas especializados con licencias como Zview® o DigiElch. Para la determinación parámetros cinéticos, termodinámicos un sistema redox y celda en estudio, usan técnicas electroquímicas. electroquímicas voltamperometría cíclica cronoamperometría puede realizar hoja cálculo Microsoft Excel empleando el complemento Solver. En este artículo utilizó programa Solver para ajustar...