Enhanced malachite green photolysis at the colloidal-aqueous interface.

ABSTRACT: Colloids, such as natural particulate matter and microplastics, can play a significant role in the fate and transport of organic contaminants. Specifically, these small nano-to micron-sized particles provide large surface area; thus, particle-aqueous interfacial chemistry becomes significant. In this work, we present an experimental investigation of interfacial photokinetics of malachite green cation (MG⁺) adsorbed at the surface of polystyrene carboxyl (PSC) microspheres suspended in aqueous solution. Second harmonic generation (SHG), an interfacial selective laser spectroscopic tool, has been used to probe the buried interface. It is revealed that relative to the bulk, photoinduced degradation of MG⁺ is accelerated by approximately 10-fold at this noncatalytic parti

SUBMITTER: Kaylor L 

PROVIDER: S-EPMC8612955 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature