Comment on 'Activation of Persulfate by Graphitized Nanodiamonds for Removal of Organic Compounds'

摘要

Since the discovery of graphene,~1 carbon nanotubes,~2 and nanodiamonds~3 as peroxymonosulfate (PMS)/persulfate (PS) activators for aqueous-phase oxidation by our group, immense research interests have been aroused in environmental remediation with the state-of-the-art carbocatalysis. Recently, Lee et al.4 reported an article entitled "Activation of Per sulfates by Graphitized Nanodiamonds for Removal of Organic Compounds", in which the authors utilized graphitized nanodiamonds (G-NDs) as carbocatalysts for persulfate activation. Despite a similar material preparation and experimental design to our previous study,5 the authors proposed a nonradical-dominated mechanism (unfortunately our original reports~(6,7) on nonradical reactions of carbons were not cited). Since the mechanism on carbon-catalyzed persulfate activation remains controversial, we would like to raise some neglected points in Lee et al. study.