Preparation of electrodes with new carbon-based materials for applications in electroanalytical

• Grant number: 14/07919-2
• Support type: Scholarships in Brazil - Doctorate
• Effective date (Start): September 01, 2014
• Effective date (End): June 30, 2019
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal researcher: Orlando Fatibello Filho
• Grantee: Patrícia Batista Deroco
• Home Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated scholarship(s): 17/23940-0 - Design of novel paper-based screen-printed electrochemical sensors for monitoring of emerging environmental substance, BE.EP.DR

Abstract

In this work it will be developed electrochemical sensors using glassy carbon electrodes modified with new nanomaterials based on carbon and/or metal particles and other types of glassy carbon electrode, the reticulated vitreous carbon, modified or not. These electrodes will be modified with different nanomaterials such as carbon black, boron-doped diamond powder and/or metallic nanoparticles. Several electrochemical techniques such as cyclic voltammetry and electrochemical impedance spectroscopy and electrochemical indicators will be used for determination and comparison of the electroactive area, area covering and heterogeneous electron transfer constants for the evaluation of the electrochemical properties of modified electrodes developed. Thus, with these modifications, it is intended to significantly improve the properties of the developed electrochemical detection sensors. It will also be evaluated the improvement of the analytical performance, as the decrease of working overpotential, which increases the selectivity of electrochemical sensors by reducing interference from electroactive species at a more positive/negative potential, the increase current density and/or increase of sensitivity (increasing the slope of the analytical curve). The electrodes manufactured will be applied in analytical determinations of compounds of interest (environmental, pharmaceutical or biological) to the evaluation of analytical conditions necessary for the development of a new analytical procedure, for example, the linear response range, and detection limit, sensitivity and lifetime of the electrodes. (AU)

Scientific publications

(7)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DEROCO, PATRICIA B.; MELO, IASMIM G.; SILVA, LAYS S. R.; EGUILUZ, KATLIN I. B.; SALAZAR-BANDA, GIANCARLO R.; FATIBELLO-FILHO, ORLANDO. Carbon black supported Au-Pd core-shell nanoparticles within a dihexadecylphosphate film for the development of hydrazine electrochemical sensor. SENSORS AND ACTUATORS B-CHEMICAL, v. 256, p. 535-542, MAR 2018. (14/07919-2)

DEROCO, PATRICIA B.; ROCHA-FILHO, ROMEU C.; FATIBELLO-FILHO, ORLANDO. A new and simple method for the simultaneous determination of amoxicillin and nimesulide using carbon black within a dihexadecylphosphate film as electrochemical sensor. Talanta, v. 179, p. 115-123, MAR 1 2018. (14/07919-2)

SANTOS, ANDERSON M.; VICENTINI, FERNANDO C.; FIGUEIREDO-FILHO, LUIZ C. S.; DEROCO, PATRICIA B.; FATIBELLO-FILHO, ORLANDO. Flow injection simultaneous determination of acetaminophen and tramadol in pharmaceutical and biological samples using multiple pulse amperometric detection with a boron-doped diamond electrode. DIAMOND AND RELATED MATERIALS, v. 60, p. 1-8, NOV 2015. (14/07919-2, 13/16770-0, 14/04284-6)

DEROCO, PATRICIA BATISTA; VICENTINI, FERNANDO CAMPANHA; FATIBELLO-FILHO, ORLANDO. An Electrochemical Sensor for the Simultaneous Determination of Paracetamol and Codeine Using a Glassy Carbon Electrode Modified with Nickel Oxide Nanoparticles and Carbon Black. Electroanalysis, v. 27, n. 9, SI, p. 2214-2220, SEP 2015. (14/07919-2, 13/16770-0)

PEREIRA, GABRIEL F.; DEROCO, PATRICIA B.; SILVA, TIAGO A.; FERREIRA, HADLA S.; FATIBELLO-FILHO, ORLANDO; EGUILUZ, KATLIN I. B.; SALAZAR-BANDA, GIANCARLO R.. Study of electrooxidation and enhanced voltammetric determination of beta-blocker pindolol using a boron-doped diamond electrode. DIAMOND AND RELATED MATERIALS, v. 82, p. 109-114, FEB 2018. (14/07919-2)

DEROCO, PATRICIA B.; MEDEIROS, ROBERTA A.; ROCHA-FILHO, ROMEU C.; FATIBELLO-FILHO, ORLANDO. Selective and simultaneous determination of indigo carmine and allura red in candy samples at the nano-concentration range by flow injection analysis with multiple pulse amperometric detection. Food Chemistry, v. 247, p. 66-72, MAY 1 2018. (14/07919-2, 12/08180-5)

DEROCO, PATRICIA BATISTA; LOURENCAO, BRUNA CLAUDIA; FATIBELLO-FILHO, ORLANDO. The use of modified electrode with carbon black as sensor to the electrochemical studies and voltammetric determination of pesticide mesotrione. Microchemical Journal, v. 133, p. 188-194, JUL 2017. (14/07919-2, 14/03019-7)