Electron spin resonance detection of spin-trapped radicals formed during the glow-discharge electrolysis of aqueous solutions
Abstract
Hydrogen atoms and hydroxyl radicals produced in the glow-discharge electrolysis of aqueous solutions have been identified by e.s.r. spectroscopy using 5,5-dimethylpyrroline-1-oxide (DMPO) as a spin trap. The trap is able to penetrate the primary reaction zone (at the discharge/solution interface) to scavenge for free radicals. No evidence for the presence of hydrated electrons (e–aq) was found.