Fig. 3
From: Deciphering the effect of citric acid on arsenic adsorption with phosphorene in aqueous solution
Phosphorene characterization (a) zeta potential of phosphorene and graphene oxide, (b) FTIR of phosphorene (black curve: before As(III) adsorption, red curve: a fter As(III) adsorption), (c) P2p of phosphorene with XPS