Zero-Valent Iron Nanocatalysts via Polymers or Metal Hydroxide Passivation: Implications for Advanced Oxidation Processes.

ABSTRACT: Zero-valent iron (ZVI) nanocatalysts are promising materials for environmental remediation (e.g., wastewater treatment) via advanced oxidation processes (AOPs) due to their ability to generate reactive oxygen species (ROS). However, their high reactivity often leads to rapid surface oxidation and a limited stability. This study evaluates the effect of different surface coatings on the stability and ROS production of ZVI nanocatalysts. The coatings tested include organic molecules such as mannitol and polyvinylpyrrolidone (PVP), as well as combinations with thin layers of metal hydroxides (M-(OH)₂, where M = Ni or Mn). Hydroxyl radical (^•OH) generation was quantified using electron paramagnetic resonance (EPR) spectroscopy over a period of 0 to 7 days in acetate buffer

SUBMITTER: Diaz-Ufano C 

PROVIDER: S-EPMC12706743 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature