Figure 4
From: Structural Transformation of Biochar Black Carbon by C60 Superstructure: Environmental Implications
Concentration ([nC60]stock determined by UV-HPLC), size, polydispersity index, count rate (from triplicate DLS analyses), and UV/visible spectra (thin lines were obtained immediately after PTFE syringe filtration) of aqueous nC60 stock solutions produced by 40 d magnetic stirring (3 batches in c–e) and sonication (b) in this study. C60 dissolved in toluene is shown in (a) as a reference.
