Our results and prior literature reports show that graphene
materials, either purchased commercially or prepared in the laboratory,
can possess a wide range of physicochemical properties and
sorption behavior for dissolved organic compounds [16,17,21]. All
graphene materials studied to date exhibit very fast sorption rates
when used as aqueous dispersions and most effectively described
using the pseudo-second order rate model, reflective of their nature
in aqueous dispersions as high surface area particles with
well-exposed surface sites and little mass transfer limitations.
Sorbed carbamazepine is held fairly strong when washed with
water, and near complete recovery is possible with alcohol
washing.