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Heterojunction of NiO/ZnO and CuO/ZnO applied at the PHOTOELETRODEGRADATION of trimethoprim and levofloxacin

Grant number: 16/08760-2
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): October 01, 2016
Field of knowledge:Engineering - Sanitary Engineering
Principal Investigator:Marcos Roberto de Vasconcelos Lanza
Grantee:Lorena Athie Goulart
Home Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:17/10118-0 - Study and application of electrochemical technology for the analysis and degradation of endocrine interferents: materials, sensors, processes and scientific dissemination, AP.TEM
Associated scholarship(s):19/04084-0 - Oxide heterojunctions electrodes applied in the photo-electrocatalysis of antibiotics in flow reactors, BE.EP.PD


This project aims at the synthesis, characterization and application heterojunction of nickel oxide (NiO) or copper oxide (CuO) with zinc oxide (ZnO) in photoelectrochemical degradation of trimethoprim and Levofloxacin antibiotics. The oxides will be produced by sol-gel method and hydrothermal and applied to glass surface by dip coating or paint for the formation of films of type NiO/ZnO and CuO/ZnO. The synthesis parameters and different methods of obtaining the oxides are studied to obtain films with a higher photocatalytic activity. The heterojunction NiO/ZnO and CuO/ZnO will be used as anode in photoeletrocatalytic degradation of emerging pollutants Trimethoprim and Levofloxacin. Physical characterization of the films will be made by techniques of X-ray diffraction, scanning electron microscopy and microanalysis by Energy Dispersive. The electrochemical characterization will be performed by voltammetric techniques and Electrochemical Impedance Spectroscopy. Photocurrent studies will be performed to the NiO, CuO and ZnO films individually and the results will be compared with the heterojunction NiO/ZnO and CuO/ZnO. The efficiency of the degradation processes of polluting species during fotoeletrocatalíticos experiments will be evaluated using the instrumental analytical techniques of spectrophotometry UV/Vis, high-performance liquid chromatography (HPLC) and total organic carbon analysis (TOC).

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)
MOREIRA, JULIANA; LIMA, VERNICA BOCALON; GOULART, LORENA ATHIE; LANZA, MARCOS R. V. Electrosynthesis of hydrogen peroxide using modified gas diffusion electrodes (MGDE) for environmental applications: Quinones and azo compounds employed as redox modifiers. APPLIED CATALYSIS B-ENVIRONMENTAL, v. 248, p. 95-107, JUL 5 2019. Web of Science Citations: 4.
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: 7.
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: 4.

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