Fig. 1
a FT-IR spectra of (A) Bi-ene-QDs and (B) As(V)@Bi-ene-QDs. b XRD patterns of Bi-ene-QDs. c XPS of Bi-ene-QDs. d TEM image of Bi-ene-QDs. e SEM image of Bi-ene-QDs. f EDX of Bi-ene-QDs. g TGA of Bi-ene-QDs. h N2 adsorption–desorption isotherm of Bi-ene-QDs