Nanostructured electrocatalysts based on manganese and tungsten oxides supported on carbon for electrogeneration of hydrogen peroxide and electrochemical degradation of ciprofloxacino

• Grant number: 21/05364-7
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: October 01, 2022
• End date: September 30, 2025
• Field of knowledge: Engineering - Sanitary Engineering - Water Supply and Wastewater Treatment
• Principal Investigator: Mauro Coelho dos Santos
• Grantee: João Paulo Carvalho Moura
• Host Institution: Centro de Ciências Naturais e Humanas (CCNH). Universidade Federal do ABC (UFABC). Ministério da Educação (Brasil). Santo André , SP, Brazil
• Associated research grant: 22/12895-1 - Advanced processes for the degradation of emerging pollutants: catalytic materials, electroanalytical sensors and scientific dissemination, AP.TEM
• Associated scholarship(s): 23/02396-0 - Investigation of MnO2/WO3-modified GDEs for ciprofloxacin degradation in water by solar photoelectro-Fenton-like process combined with photoelectrocatalysis, BE.EP.DR

Abstract

Emerging pollutants are extremely resistant to conventional wastewater treatment processes. Therefore, the development of effective "green" technologies to address these problems is seen as a major challenge today. Recently, research activities have focused on PEOAs (Advanced Electrochemical Oxidative Processes) as a promising alternative technology for wastewater treatment, due to its high efficiency for organic pollutant removal. In view of this, this project aims the synthesis and characterization of catalysts based on carbon Printex L6 and carbon cloth, modified with nanostructured MnO2 and WO3 oxides in nanoflower morphology, aiming the construction of gaseous diffusion electrodes (cathodes) for H2O2 electrogeneration and, that, with anodes of DDB, Pt and WO3 photoanodes will be applied in Advanced Oxidative Electrochemical Processes in conjunction with the use of simulated solar or real solar radiation source (Solar photoelectro-Fenton) for further treatment of simulated effluents and synthetic urine contaminated by the antibiotic ciprofloxacin. The materials will be characterized by physical techniques such as X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Raman and contact angle, where aspects such as composition, particle size, phases, nanostructure formation and hydrophilicity will be evaluated in the case of cathodes. Prepared gas diffusion electrodes (cathodes) and anodes of boron doped diamond, Pt and WO3 photoanodes will be used in reactors for the degradation of organic pollutants. The degradation processes will be evaluated by techniques such as HPLC, Total Dissolved Organic Carbon Concentration Measure (TOC) and gas chromatography coupled to mass spectrometry. The possible dissolution of the catalyst will be studied by UV-Visible Spectrophotometry and/or Atomic Absorption Spectrometry with Flame Atomization. This project development aims achieve better better results of ciprofloxacin degradation, combined with lower costs of treatment, operation and mineralization, using nanostructured materials. (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)

ANTONIN, VANESSA S.; LUCCHETTI, LANNA E. B.; SOUZA, FELIPE M.; PINHEIRO, VICTOR S.; MOURA, JOAO C.; TRENCH, ALINE B.; DE ALMEIDA, JAMES M.; AUTRETO, PEDRO A. S.; LANZA, MARCOS R. V.; SANTOS, MAURO C.. Sodium niobate microcubes decorated with ceria nanorods for hydrogen peroxide electrogeneration: An experimental and theoretical study. Journal of Alloys and Compounds, v. 965, p. 11-pg., 2023-11-25. (17/22976-0, 21/14394-7, 21/05364-7, 17/10118-0, 19/01925-4, 20/14100-0)

TRENCH, ALINE B.; MOURA, JOAO PAULO C.; ANTONIN, VANESSA S.; FERNANDES, CAIO MACHADO; LIU, LIYING; SANTOS, MAURO C.. Improvement of H 2 O 2 electrogeneration using a Vulcan XC72 carbon-based electrocatalyst modified with Ce-doped Nb 2 O 5. ADVANCED POWDER TECHNOLOGY, v. 35, n. 4, p. 11-pg., 2024-03-20. (20/14100-0, 21/14394-7, 21/05364-7, 17/10118-0, 17/21846-6, 22/10484-4)

MOURA, JOAO PAULO C.; ANTONIN, VANESSA S.; TRENCH, ALINE B.; SANTOS, MAURO C.. Hydrogen peroxide electrosynthesis: A comparative study employing Vulcan carbon modification by different MnO2 nanostructures. Electrochimica Acta, v. 463, p. 9-pg., 2023-09-20. (17/10118-0, 21/05364-7, 21/14394-7)

FERNANDES, CAIO MACHADO; MOURA, JOAO PAULO C.; TRENCH, ALINE B.; ALVES, ODIVALDO C.; XING, YUTAO; LANZA, MARCOS R. V.; SILVA, JULIO CESAR M.; SANTOS, MAURO C.. Magnetic field-enhanced two-electron oxygen reduction reaction using CeMnCo nanoparticles supported on different carbonaceous matrices. MATERIALS TODAY NANO, v. 28, p. 10-pg., 2024-10-03. (22/15252-4, 21/14394-7, 21/05364-7, 22/12895-1, 22/10484-4)

ANTONIN, VANESSA S.; SOUZA, FELIPE M.; PINHEIRO, VICTOR S.; MOURA, JOAO P. C.; TRENCH, ALINE B.; FERNANDES, CAIO MACHADO; LANZA, MARCOS R. V.; SANTOS, MAURO C.. Electrocatalytic hydrogen peroxide generation using WO₃ nanoparticle-decorated sodium niobate microcubes. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v. 959, p. 9-pg., 2024-03-15. (20/14100-0, 21/14394-7, 21/05364-7, 17/21846-6, 22/10484-4)

FERNANDES, CAIO MACHADO; SANTOS, AILA O.; ANTONIN, VANESSA S.; MOURA, JOAO PAULO C.; TRENCH, ALINE B.; ALVES, ODIVALDO C.; XING, YUTAO; SILVA, JULIO CESAR M.; SANTOS, MAURO C.. Magnetic field-enhanced oxygen reduction reaction for electrochemical hydrogen peroxide production with different cerium oxide nanostructures. CHEMICAL ENGINEERING JOURNAL, v. 488, p. 11-pg., 2024-04-06. (22/15252-4, 21/14394-7, 21/05364-7, 22/12895-1, 17/10118-0, 22/10484-4)

MOURA, JOAO PAULO C.; LUCCHETTI, LANNA E. B.; FERNANDES, CAIO M.; TRENCH, ALINE B.; LANGE, CAMILA N.; BATISTA, BRUNO L.; ALMEIDA, JAMES M.; SANTOS, MAURO C.. Experimental and theoretical studies of WO₃/Vulcan XC-72 electrocatalyst enhanced H₂O₂ yield ORR performed in acid and alkaline medium. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, v. 12, n. 4, p. 11-pg., 2024-06-07. (22/15252-4, 21/14394-7, 21/05364-7, 22/12895-1, 17/10118-0, 22/10484-4)