Peroxymonosulfate as a source of reactive oxygen species for the oxidation of organic compounds and surface modifications in MnOOH: contributions to the advancement of catalytic advanced oxidation processes

• Grant number: 24/22223-6
• Support Opportunities: Regular Research Grants
• Start date: June 01, 2025
• End date: May 31, 2028
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: José Mario de Aquino
• Grantee: José Mario de Aquino
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil

Abstract

Ensuring the supply of water that is free from organic contaminants of environmental concern (CEC) is one of the main challenges of modern society. For such, catalytic advanced oxidative processes (c-POA) are a suitable and easy-to-apply option. In this project, we intend to use the oxidant peroxymonosulfate (PMS) to promote surface modifications in manganese oxide-hydroxide (MnOOH, doped or not with Cu and/or Co ions) and to activate and generate oxidizing species, both radical and non-radical, that will degrade the CEC. The aim is to study the morphological, structural, and electrochemical evolution of the precursor oxides, before and after modification with PMS, as well as their progress throughout the PMS activation process in different aqueous matrices for CEC oxidation. Ultimately, we intend to gain a better understanding of the PMS activation mechanism in solution and how this oxidant can modify the surface of materials, allowing their use in multiple cycles with various organic pollutants in different aqueous matrices. Thus, it is expected to contribute to the eventual application of c-POA in tertiary effluent treatments. (AU)