Scholarship 24/13620-1 - Eletroanalítica, Contaminantes emergentes - BV FAPESP
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Determination of emerging contaminants employing electrochemical sensors modified with metallic nanoparticles synthesized in natural deep eutectic solvents

Grant number: 24/13620-1
Support Opportunities:Scholarships in Brazil - Doctorate (Direct)
Start date until: December 01, 2024
End date until: November 30, 2028
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
Principal Investigator:Orlando Fatibello Filho
Grantee:Gustavo Patelli Longatto
Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Associated research grant:24/04116-8 - Use of deep eutectic solvents in sustainable spectrophotometric and electroanalytical procedures, AP.R

Abstract

In the last five years, our research group has been evaluating the applications of deep eutectic solvents (DES), mainly in microextraction processes and in the modification of carbon paste electrodes and glassy carbon electrodes. As a subclass of DES, natural deep eutectic solvents (NADES) have emerged as more sustainable alternatives, as they are produced exclusively from natural compounds, to replace conventional organic solvents and ionic liquids, which have high toxicities and are used in numerous technological and industrial processes. Specifically, NADES have been studied for the green synthesis of metallic nanoparticles (MNPs), as these solvents are biodegradable, have thermal stability, reducing properties, and the ability to stabilize nanomaterials. In this regard, we intend to develop and optimize a synthetic route for MNPs of gold, platinum, silver, copper, and nickel, using different NADES as the reaction medium, and subsequently use them in the development of electrochemical sensors for the determination of emerging contaminants. Characterizations of NADES will be performed using infrared spectroscopy, nuclear magnetic resonance, thermogravimetric analysis, differential scanning calorimetry, viscosity measurements, conductivity, and water content. Characterizations of MNPs will be carried out using scanning and transmission electron microscopies and X-ray diffraction. The fabricated sensors will be studied using cyclic voltammetry, differential pulse voltammetry, square wave voltammetry, amperometry, and electrochemical impedance spectroscopy. (AU)

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