Development of gas diffusion electrodes modified with silver phthalocyanine applied for the degradation of Bisphenol S

• Grant number: 25/06378-2
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: June 01, 2025
• End date: May 31, 2026
• Field of knowledge: Engineering - Sanitary Engineering - Water Supply and Wastewater Treatment
• Principal Investigator: Marcos Roberto de Vasconcelos Lanza
• Grantee: Pedro Henrique Fattori
• 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 to develop gas diffusion electrodes (GDEs) modified with silver phthalocyanine, focusing primarily on optimizing the conditions for the electrogeneration of hydrogen peroxide (H2O2) from the oxygen reduction reaction (ORR). The research intends to evaluate the influence of different concentrations of silver phthalocyanine on the efficiency of H¿O¿ production, using techniques such as cyclic voltammetry and linear sweep voltammetry, as well as physicochemical characterizations by X-ray diffraction (XRD), Raman spectroscopy, and scanning electron microscopy (SEM). In this way, the project seeks to enhance the electrocatalytic performance of the materials for the degradation of emerging pollutants, such as Bisphenol S (BPS), through advanced oxidative processes (AOPs), such as photoelectro-Fenton and electro-Fenton. Degradation efficiency will be monitored by high-performance liquid chromatography (HPLC) and total organic carbon (TOC) analysis, aiming to create a sustainable and efficient solution for the treatment of contaminated effluents. (AU)