Gas diffusion electrodes modified with Co and Fe NPs and biochar for the degradation of antidepressant drugs: mechanistic and technological aspects

• Grant number: 23/06558-5
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: April 01, 2024
• End date: March 31, 2026
• Field of knowledge: Engineering - Sanitary Engineering - Water Supply and Wastewater Treatment
• Principal Investigator: Marcos Roberto de Vasconcelos Lanza
• Grantee: Carlos Henrique Magalhães Fernandes
• Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , 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

Abstract

This project aims at the synthesis, characterization and application of copper and tin nanoparticles (Cu and Sn NPs) supported on carbonaceous materials (Carbon Black Vulcan® or Printex®) to prepare GDE (cathode) and use in the reduction reaction of CO2 (CO2RR). Cu and Sn NPs will be synthesized by sol-gel, precipitation or hydrothermal methods and dispersed in carbon matrices to prepare GDE type electrodes. Synthesis parameters such as amount of catalytic carbon mass and type of NPs will be studied to obtain materials with high activity for CO2RR. Physical characterizations of Cu and Sn NPs will be performed by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and textural analysis using nitrogen adsorption and desorption and X-ray photoelectron spectroscopy. For electrochemical characterization, cyclic voltammetry and electrochemical impedance spectroscopy will be used. To identification of reaction products, high performance liquid chromatography and gas chromatography measurements will be performed with Cu and Sn nanoparticles supported on carbon materials during CO2RR. The selectivity of each product formed as a function of the different carbon materials and their structures/morphologies will be evaluated during the CO2RR process. In addition, the synergism of the system via CO2 reduction will be evaluated using GDEs with Cu and Sn NPs, in addition to the types of carbon matrices Carbon Black Vulcan® and Printex®. Finally, Cu and Sn NPs will be used during CO2RR for kinetic and reaction mechanism studies.

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)

FELISARDO, RAUL JOSE ALVES; MAGALHA, CARLOS HENRIQUE; SANTOS, GESSICA DE OLIVEIRA SANTIAGO; LANZA, MARCOS ROBERTO DE VASCONCELOS. Unlocking the potential of in situ H2O2 generation in urine as a decentralized electro-sanitation strategy. CHEMICAL ENGINEERING JOURNAL, v. 507, p. 14-pg., 2025-03-01. (20/02743-4, 18/22210-0, 23/06558-5, 19/06650-3, 18/22022-0, 22/12895-1, 23/13260-2, 18/22211-7)

REIS, ROBERTA Y. N.; GONZAGA, ISABELLE M. D.; GONCALVES, ROGER; FERNANDES, CARLOS H. M.; ASSIS, MARCELO; PEREIRA, ERNESTO C.; LANZA, MARCOS R. V.; MASCARO, LUCIA H.. WO₃/BiVO₄ heterojunctions: Photoelectrochemical performance for dexamethasone degradation and toxicity assessment in Lactuca sativa. Electrochimica Acta, v. 526, p. 15-pg., 2025-06-20. (21/11326-0, 23/06558-5, 18/22022-0, 18/22210-0, 13/07296-2, 20/15211-0, 22/12895-1, 23/08525-7, 17/11986-5, 18/22211-7)

FERREIRA, DAVI S.; MARQUES, GLEISON N.; FERREIRA, ADRIANADAS MERCES P.; OLIVEIRA, MARCELO M.; DA ROCHA, CLAUDIA Q.; MOREIRA, AILTON J.; FERNANDES, CARLOS H. M.; LANZA, MARCOS R.; BERNARDI, MARIA INES B.; MASCARO, LUCIA H.; et al. Synthesis of hematite (α-Fe2O3) nanoparticles using Syzygium cumini extract: Photodegradation of norfloxacin and enhanced recyclability. Materials Chemistry and Physics, v. 332, p. 12-pg., 2024-12-20. (18/22210-0, 23/06558-5, 23/07525-3, 19/06650-3, 18/22022-0, 18/09761-8, 21/06128-5, 23/01425-7, 22/12895-1, 22/06219-3, 13/07296-2, 18/22211-7)