Green and Effective Removal of Aqueous Graphene Oxide under UV-Light Irradiation.

ABSTRACT: The potential extensive application of graphene oxide (GO) in various fields results in the possibility of its release into the natural environment with negative impacts on humans and the ecosystem. The UV-induced removal behavior of aqueous GO was evaluated in this study, and the effect of various parameters (including initial GO concentration, initial solution pH and co-existing ions) on removal rate of GO were investigated in detail. The results showed that UV-light induced a maximum removal rate of GO of 99.1% after 32 h irradiation without any additives, and that the photo-induced removal process in all cases fitted well with pseudo-first-order kinetics. Under optimal conditions, GO was completely removed, with initial GO concentrations of 10 mg/L while adjusting solution pH to 3 or a

SUBMITTER: Yuan X 

PROVIDER: S-EPMC6164349 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature