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 1 XRD patterns of CdS/M/TiO2 (M=Ag, Ru, Au, Pd, Pt) prepared by photodeposition method. (Figure provided in color online.)](/cms/asset/cbb38640-a0ae-42ad-ae25-3c205cdca5d7/ugnm_a_469004_o_f0001g.jpg)
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 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.)](/cms/asset/871f65c8-ec4d-47d7-a784-32eb6459b194/ugnm_a_469004_o_f0002g.jpg)
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 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.)](/cms/asset/ac360d27-4153-461e-87a7-0c26ada36bc1/ugnm_a_469004_o_f0003g.jpg)
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 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.)](/cms/asset/7faafae6-febf-4d99-8094-8ba755df3cab/ugnm_a_469004_o_f0004g.jpg)
FIGURE 5 TEM images of (A) CdS/Ag/TiO2-R prepared by precipitation method, and (B) CdS/Ag/TiO2 prepared by photodeposition method.
![FIGURE 5 TEM images of (A) CdS/Ag/TiO2-R prepared by precipitation method, and (B) CdS/Ag/TiO2 prepared by photodeposition method.](/cms/asset/e268bfd7-9ffb-4204-af58-5d4cee139ee9/ugnm_a_469004_o_f0005g.gif)
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 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.)](/cms/asset/6883c8b9-f1b8-4216-bdf8-1243342d84e2/ugnm_a_469004_o_f0006g.jpg)
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 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.)](/cms/asset/46f78e2a-2429-4eb4-a75a-d257b1b5c2a5/ugnm_a_469004_o_f0007g.jpg)
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 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.)](/cms/asset/0b581c59-dc1f-4803-aa14-bf00454e2e57/ugnm_a_469004_o_f0008g.jpg)
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.)
![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.)](/cms/asset/1785df27-50a4-40eb-ae3b-991b350314cb/ugnm_a_469004_o_f0009g.jpg)