Development of electrochemical sensors based on nanomaterials for the determination of interest pharmaceutical and environmental species

• Grant number: 10/20754-1
• Support Opportunities: Scholarships in Brazil - Doctorate
• Effective date (Start): April 01, 2011
• Effective date (End): July 31, 2014
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Orlando Fatibello Filho
• Grantee: Luiz Carlos Soares de Figueiredo Filho
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil

Abstract

In this PhD project will be developed electrochemical sensors based on nanomaterials (metallic nanoparticles of gold and platinum and nanomaterials based on carbon). The working electrodes (base electrodes ) that will be investigated are, glassy carbon, or composite electrode containing carbon nanotubes immobilized on polymeric film and boron-doped diamond. After construction and preparation of those electrodes, voltammetric studies will be carried out employing electrochemical probes (hexacyanoferrate (III) and potassium hexaminrutênio) and these electrodes will be applied in the determination environmental organic species and pharmaceutical analytes. The results will be compared with those obtained using the same metal macroelectrodes or unmodified (without metal nanoparticles) films. Thus, will be a search for a improvement in the analytical response in terms of reduction in the overpotential of the electrode which is frequently high, reducing interference from electroactive species (increase of selectivity) and also increasing the current magnitude (increase of the analytical signal) and/or sensitivity (increase of analytical curve slope.

Scientific publications

(9)

(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)

ASBAHR, DEBORAH; FIGUEIREDO-FILHO, LUIZ CARLOS S.; VICENTINI, FERNANDO CAMPANHA; OLIVEIRA, GEISER GABRIEL; FATIBELLO-FILHO, ORLANDO; BANKS, CRAIG E.. Differential pulse adsorptive stripping voltammetric determination of nanomolar levels of methotrexate utilizing bismuth film modified electrodes. SENSORS AND ACTUATORS B-CHEMICAL, v. 188, p. 334-339, NOV 2013. (10/20754-1, 11/13368-0)

MARRETO, PAOLA D.; TRENCH, ALINE B.; VICENTINI, FERNANDO C.; FIGUEIREDO-FILHO, LUIZ C. S.; MEDEIROS, ROBERTA A.; PEREIRA, ERNESTO. C.; FATIBELLO-FILHO, ORLANDO. Square-Wave Voltammetric Determination of Nanomolar Levels of Linuron in Environmental Water Samples Using a Glassy Carbon Electrode Modified with Platinum Nanoparticles within a Dihexadecyl Phosphate Film. AUSTRALIAN JOURNAL OF CHEMISTRY, v. 68, n. 5, p. 800-805, 2015. (10/20754-1, 11/00601-9, 13/16770-0)

LUIZ CARLOS S. FIGUEIREDO-FILHO; BRUNO C. JANEGITZ; RONALDO C. FARIA; ORLANDO FATIBELLO-FILHO; LUIZ H. MARCOLINO-JUNIOR; FABIO ROBERTO CAETANO; IVANILDO LUIZ DE MATTOS. Construção e aplicação de um minissensor de filme de bismuto utilizando materiais de baixo custo para determinações voltamétricas in loco. Química Nova, v. 35, n. 5, p. 1016-1019, 2012-00-00. (07/04515-4, 08/09893-0, 10/20754-1, 08/07529-9)

FIGUEIREDO-FILHO, LUIZ CARLOS S.; AZZI, DEBORAH C.; JANEGITZ, BRUNO C.; FATIBELLO-FILHO, ORLANDO. Determination of Atrazine in Natural Water Samples by Differential Pulse Adsorptive Stripping Voltammetry Using a Bismuth Film Electrode. Electroanalysis, v. 24, n. 2, p. 303-308, FEB 2012. (10/20754-1, 08/09893-0, 08/07529-9)

FIGUEIREDO-FILHO, LUIZ CARLOS S.; JANEGITZ, BRUNO C.; FATIBELLO-FILHO, ORLANDO; MARCOLINO-JUNIOR, LUIZ HUMBERTO; BANKS, CRAIG E.. Inexpensive and disposable copper mini-sensor modified with bismuth for lead and cadmium determination using square-wave anodic stripping voltammetry. ANALYTICAL METHODS, v. 5, n. 1, p. 202-207, 2013. (10/20754-1, 08/07529-9)

JANEGITZ, BRUNO C.; FIGUEIREDO-FILHO, LUIZ C. S.; VICENTINI, FERNANDO CAMPANHA; RIBEIRO, MARIA FERNANDA M.; SUAREZ, WILLIAN T.; FATIBELLO-FILHO, ORLANDO; METTERS, JONATHAN P.; BANKS, CRAIG E.. Development of a carbon nanotube paste electrode modified with zinc phosphate for captopril determination in pharmaceutical and biological samples. ANALYTICAL METHODS, v. 6, n. 5, p. 1324-1329, 2014. (10/20754-1, 08/09893-0, 12/02877-4, 13/16770-0)

FIGUEIREDO-FILHO, LUIZ C. S.; SARTORI, ELEN R.; FATIBELLO-FILHO, O.. Electroanalytical determination of the linuron herbicide using a cathodically pretreated boron-doped diamond electrode: comparison with a boron-doped diamond electrode modified with platinum nanoparticles. ANALYTICAL METHODS, v. 7, n. 2, p. 643-649, 2015. (10/20754-1, 14/04284-6, 09/14454-8)

VICENTINI, FERNANDO CAMPANHA; RAVANINI, AMANDA E.; FIGUEIREDO-FILHO, LUIZ C. S.; INIESTA, JESUS; BANKS, CRAIG E.; FATIBELLO-FILHO, ORLANDO. Imparting improvements in electrochemical sensors: evaluation of different carbon blacks that give rise to significant improvement in the performance of electroanalytical sensing platforms. Electrochimica Acta, v. 157, p. 125-133, MAR 1 2015. (10/20754-1, 14/04284-6, 13/16770-0)

FIGUEIREDO-FILHO, LUIZ C. S.; SILVA, TIAGO A.; VICENTINI, FERNANDO C.; FATIBELLO-FILHO, ORLANDO. Simultaneous voltammetric determination of dopamine and epinephrine in human body fluid samples using a glassy carbon electrode modified with nickel oxide nanoparticles and carbon nanotubes within a dihexadecylphosphate film. ANALYST, v. 139, n. 11, p. 2842-2849, 2014. (10/20754-1, 13/16770-0)