Abstract

In this study, ultra-thin and easily dispersible g-C3N4 nanosheets were obtained by a simple wet ball-milling process. Morphological and structural analysis showed that increasing ball-milling speed resulted in a decrease in both particle size and the number of stacked layers in g-C3N4 nanosheets, hence improving their dispersion stability. Thinner nanosheets obtained by ball milling at 150 rpm also had higher photocatalytic capacity, with up to 2.2 times enhancement comparing with untreated g-C3N4. The feasibility of the g-C3N4 nanosheets for photodegradation of aqueous organic contaminants was demonstrated using polluted water sampled from Jingyue Lake in Donghua University, a local lake.

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