Fig. 4From: Facile Fabrication of Bi2WO6/Ag2S Heterostructure with Enhanced Visible-Light-Driven Photocatalytic Performances a UV-vis absorption spectra of Bi2WO6, Ag2S and Bi2WO6/Ag2S. b Kubelka-Munk plot for bandgap calculation of Bi2WO6, Ag2S, and Bi2WO6/Ag2SBack to article page