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Development of nanostructured electrochemical sensors for the determination of antibiotics in samples of environmental interest

Grant number: 14/11861-0
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): December 01, 2014
Effective date (End): February 28, 2018
Field of knowledge:Engineering - Sanitary Engineering
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal Investigator:Marcos Roberto de Vasconcelos Lanza
Grantee:Thais Tasso Guaraldo
Home Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:13/02762-5 - Development of technologies to prevent pollution: degradation and monitoring online of antibiotics in sewage, AP.JP
Associated scholarship(s):15/14100-2 - Nanomaterials synthesis using ionic liquids aiming electrochemical sensors development for pharmaceutical compounds detection, BE.EP.PD

Abstract

Environmental contamination by recalcitrant pollutants has been studied for many researchers all over the world. The increasing growth of industrial and human activities has strongly contributed to the environmental pollution. Pharmaceutical compounds have been founded as pollutants in residual water, underground water and soil mainly due to extensive elimination of these substances by the human body and animals after use. Moreover, its presence in aquatic environment may cause side effects to organisms as algae, crustaceans, bacteria and fish as well as human beings because of the acute toxicity of most pharmaceuticals. Toxic effects of antibiotics contamination as sulfonamides revealed normal development disturb, growing and bioaccumulation in different aquatic plants. Besides, it has caused huge impact on soil microbial community as bacterial resistance e inhibition of natural mechanism of natural pesticides contamination and other xenobiotics.Electroanalytical techniques have been pointed out for the many advantages of these methods as in situ measurement possibility, short analysis time, instrumentation and materials low cost, high sensitivity, miniaturization and portability. For these reason, they have been applied to many substances determination.However, one of the biggest challenges of this field is the development of novel materials with high stability which could be used as efficient sensors on antibiotics detection. Carbon nanotubes modified electrodes (CNTs) have been employed as sensors on electroanalysis due to advantages as electronic properties, high mechanical resistance and superficial areas. Moreover, CNTs have also been modified with metallic nanoparticles aiming better catalytic activity. The template synthesis has revealed an increase on sensors` sensitivity as it is able to generate highly reproducible materials with high surface area.Therefore, the present project aims to explore a novel materials synthesis method based on carbon nanotubes modification and metallic nanoparticles obtained by template synthesis which shows potential application as electrochemical sensors on antibiotics determination. (AU)

Scientific publications
(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)
GUARALDO, THAIS T.; GOULART, LORENA A.; MORAES, FERNANDO C.; LANZA, V, MARCOS R. Carbon black nanospheres modified with Cu (II)-phthalocyanine for electrochemical determination of Trimethoprim antibiotic. Applied Surface Science, v. 470, p. 555-564, MAR 15 2019. Web of Science Citations: 6.
GOULART, LORENA A.; GUARALDO, THAIS T.; LANZA, MARCOS R. V. A Novel Electrochemical Sensor Based on Printex L6 Carbon Black Carrying CuO/Cu2O Nanoparticles for Propylparaben Determination. Electroanalysis, v. 30, n. 12, p. 2967-2976, DEC 2018. Web of Science Citations: 2.
VANESSA M. VASCONCELOS; FERNANDA DE L. SOUZA; THAIS T. GUARALDO; FERNANDA L. MIGLIORINI; MAURÍCIO R. BALDAN; NEIDENÊI G. FERREIRA; MARCOS R. DE V. LANZA. OXIDAÇÃO ELETROQUÍMICA DOS CORANTES REATIVOS PRETO 5 E AZUL 19 UTILIZANDO UM ELETRODO DE DIAMANTE DOPADO COM BORO NÃO COMERCIAL. Química Nova, v. 39, n. 9, p. -, Nov. 2016.

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