Figures & data
FIGURE 1 XRD patterns of CdS/M/TiO2 (M=Ag, Ru, Au, Pd, Pt) prepared by photodeposition method. (Figure provided in color online.)
FIGURE 2 XRD patterns of CdS/TiO2 and CdS/Ag/TiO2 prepared by photodeposition method, and CdS/TiO2-R and CdS/Ag/TiO2-R prepared by precipitation method. (Figure provided in color online.)
FIGURE 3 UV-Vis diffuse reflectance spectra of TiO2 and CdS/M/TiO2 (M=Ag, Ru, Au, Pd, Pt) prepared by photodeposition method. (Figure provided in color online.)
FIGURE 4 UV-Vis diffuse reflectance spectra of CdS/TiO2 and CdS/Ag/TiO2 prepared by photodeposition method, and CdS/TiO2-R and CdS/Ag/TiO2-R prepared by precipitation method. (Figure provided in color online.)
FIGURE 5 TEM images of (A) CdS/Ag/TiO2-R prepared by precipitation method, and (B) CdS/Ag/TiO2 prepared by photodeposition method.
FIGURE 6 Photodecomposition of methylene blue catalyzed by CdS/M/TiO2 (M=Ag, Ru, Au, Pd, Pt) nanojunctions prepared by photodeposition method, under the irradiation of visible light (>400 nm) for up to 90 min. (Figure provided in color online.)
FIGURE 7 Energy band diagram and charge transfer mechanism in CdS/M/TiO2 (M=Ag, Ru, Au, Pd, Pt) three-component nanojunction systems. (Figure provided in color online.)
FIGURE 8 Photodecomposition of methylene blue catalyzed by photocatalysts prepared by photodeposition method (CdS/TiO2 and CdS/Ag/TiO2), and by precipitation method (CdS/TiO2-R and CdS/Ag/TiO2-R), under the irradiation of visible light (>400 nm) for up to 90 min. (Figure provided in color online.)
FIGURE 9 Schematic illustration of charge transfer in nanojunction systems. (a) CdS/TiO2 two-component nanojunctions prepared by photodeposition and precipitation (CdS/TiO2 and CdS/TiO2-R); (b) CdS/Ag/TiO2 three-component nanojunction prepared by precipitation method (CdS/Ag/TiO2-R); (c) CdS/Ag/TiO2 three-component nanojunction prepared by photodeposition method (CdS/Ag/TiO2). (Figure provided in color online.)
