Recent advances in H2O2 electrosynthesis based on the application of gas diffusion electrodes: Challenges and opportunities

Author(s)

Santos, Gessica O. S. ; Cordeiro-Junior, Paulo Jorge M. ; Sanchez-Montes, Isaac ; Souto, Robson S. ; Kronka, Matheus S. ; Lanza, Marcos R. V.

• Document type: Journal article
• Source: CURRENT OPINION IN ELECTROCHEMISTRY; v. 36, p. 13-pg., 2022-12-01.

Abstract

Over the past few years, the development of highly efficient alternative techniques for the in situ production of H2O2 via two-electron oxygen reduction reaction (2e(-)ORR) has been the focus of intense research in electrochemistry. This review presents an overview of the recent advances made in H2O2 electrosynthesis based on the application of gas diffusion electrodes (GDE) in the last three years. In the first section, we will be looking at the findings in the development of novel modified GDEs with a view to enhancing the activity and selectivity for 2e(-)ORR, and the novel methodologies that have been employed for the construction of GDEs. In the second section, we will delve into the advances in the H2O2 electro-generation in industrial scale and for the treatment of water and wastewater. Finally, we will be discussing about the challenges and opportunities related to the production of H2O2 via 2e(-)ORR. (AU)

• FAPESP's process: 16/19612-4 - Degradation of endocrine disruptors carbofuran, methylparaben and propylparaben via electrogenerated H2O2 and associated processes (electrogenerated H2O2/UV, electro-Fenton e photoelectro-Fenton)
• Grantee: Paulo Jorge Marques Cordeiro Junior
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• FAPESP's process: 20/07351-7 - Advanced oxidation processes based on the in situ activation of oxidants via UVC and solar radiation for the simultaneous elimination of microcontaminants and pathogens
• Grantee: Isaac José Sánchez Montes
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 17/23464-3 - Study of agrochemical degradation paraquat, sodium-metham and carbaryl by Electrochemical Advanced Oxidation Process (EAOP) using gas diffusion electrode modified with bimetallic oxides
• Grantee: Matheus Schiavon Kronka
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• FAPESP's process: 20/02743-4 - Fe/RuO2-TiO2 films supported on carbon felt for norfloxacin degradation by heterogeneous electro-fenton process
• Grantee: Géssica de Oliveira Santiago Santos
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 17/10118-0 - Study and application of electrochemical technology for the analysis and degradation of endocrine interferents: materials, sensors, processes and scientific dissemination
• Grantee: Marcos Roberto de Vasconcelos Lanza
• Support Opportunities: Research Projects - Thematic Grants