Work

Transition Metal-Doped Cobalt Oxyhydroxide Catalysts with Enhanced Peroxymonosulfate Activation for Dye Decolorization

Year: 2025

Type: conference-paper

Abstract: Sulfate radical-based advanced oxidation processes (AOPs) are effective for removing organic pollutants from wastewater. In this study, transition metal-doped cobalt oxyhydroxide (CoOOH) was synthesized as an efficient peroxymonosulfate (PMS) activator for the decolorization of rhodamine B. Doping CoOOH with transition metals enhanced its PMS activation performance compared with that of pure CoOOH. Notably, the reaction rate constant in the Ni-CoOOH/PMS system was approximately 4.3 times higher than that in the CoOOH/PMS system. The presence of multiple metals in the catalyst facilitated efficient Co2+/Co3+ redox cycling, resulting in improved PMS activation and more effective organic pollutant removal. This study highlights the potential of CoOOH-based materials for use in environmental remediation technologies utilizing PMS.

DOI: 10.3390/chemproc2025017008

Authors: Rina Yamamoto, Hideyuki Katsumata, Ikki Tateishi, Mai Furukawa, Satoshi Kaneco

Institution: Mie University

Language: English

Topic: Advanced oxidation water treatment

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: gold

Funder: Japan Society for the Promotion of Science

Awards: Enhanced photocatalytic activity of wide solar spectra usage type photocatalyst based on intramolecular modified polymer material, Development of structural control band engineered polymer photocatalyst for the effective solar overall water splitting, G6212395729, Development of a novel organic photocatalyst that combines in-plane heterojunction and doping method