Redox transformations at nanodiamond surfaces revealed by in situ infrared spectroscopy

摘要

Attenuated total reflectance infrared spectroscopy is used to monitor nanodiamond surface group transformations in the presence of aqueous IrCl_6~2-. Electron transfer between the nanoparticle surface and the solution redox species results in oxidation of ~8.5% of surface alcohol groups, with concomitant formation of unsaturated ketone or quinone-like moieties.