11 pages. -- PDF files includes: Experimental section; Photocatalytic experiment; Synthesis of GDY powder; Preparation of CuO/GDY/TiO2 and GDY/TiO2; Preparation of Pt loaded TiO2, tables and figures. -- Figure S1. The prepared GDY powder by using deprotection-free method. -- Table S1. Screening of catalysts and solvents for the direct coupling reaction of HEB-TMS. + entry 15 was performed under Ar conditions. -- Figure S2. GC-MS spectra of the DMF solution after reaction (balck line) and the standard curve of the corresponding compound (red line). -- Figure S3. ICP-Mass results for content of Cu in the prepared CuO/GDY samples. -- Figure S4. Low- and high-magnification SEM images of the prepared CuO/GDY samples. -- Figure S5. 1*1*1 unit crystal model of CuO and atomic supercell model illustration of the CuO nanoparticle oriented as in TEM images. -- Table S2. Comparison between the experimental and the theoretical bulk plane spacing distances and angles between planes. -- Figure S6. High-resolution XPS spectra of Si in GDY. -- Table S3. The atomic percentage of different elements in pure GDY. -- Figure S7. XRD spectra of TiO2 and CuO/GDY/TiO2 with different content. -- Figure S8. (a) Raman spectra and (b) enlarged spectra of TiO2 and CuO/GDY/TiO2 with different content. - -Figure S9. (a) the full XPS spectra of TiO2 and CuO/GDY/TiO2; (b) high-resolution XPS spectra of Cu in CuO/GDY/TiO2. -- Figure S10. UV-Vis spectra of TiO2 and CuO/GDY/TiO2 with different content. -- Figure S11. photocurrent test of CuO/GDY/TiO2, GDY/TiO2, CNT/TiO2 and GR/TiO2. -- Figure S12. Tauc plot of the prepared GDY powder. -- Figure S13. Valence band spectra of the prepared GDY powder by XPS. -- Figure S14. (a) High-resolution XPS spectra of Cu in CuO/GDY/TiO2 before and after photocatalysis; (b) fitting of Cu in in CuO/GDY/TiO2 after photocatalysis. In comparison, the satellite observed for Cu 2p (corresponding to Cu2+) is significantly reduced after illumination. -- Figure S15. The proposed photocatalytic mechanism of the CuO/GDY/TiO2 photocatalysts.

Peer reviewed