http://repository.vnu.edu.vn/handle/VNU_123/26412
We demonstrate that hydroxyl-groupswhich are located on the surfaces of mesoporous metal oxides (in particular sintered layers of F-doped tin oxide (FTO) and TiO2 on glass plates) are capable of undergoing reactionswith 4-nitrobenzene radicals.
The highly reactive benzene radicals are generated by the electrochemical reduction of 4-nitrobenzenediazonium tetrafluoroborate in acetonitrile.
We found that the grafting surfaces were chemically inert to strong acids and bases.
The grafted surfaceswere characterized and analyzed by cyclic voltammetry (CV), attenuated total reflectance Fourier transform infrared spectroscopy (ATR–FTIR), X-ray photo electron spectroscopy (XPS), scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX).
Implementation of electrochemically grafted TiO2 particles as photo-anodes in dye-sensitized solar cells (DSCs) showed that the grafted surface is capable of suppressing the undesired back-electron-transfer processes in dye-sensitized solar cells.
We demonstrate that hydroxyl-groupswhich are located on the surfaces of mesoporous metal oxides (in particular sintered layers of F-doped tin oxide (FTO) and TiO2 on glass plates) are capable of undergoing reactionswith 4-nitrobenzene radicals.
The highly reactive benzene radicals are generated by the electrochemical reduction of 4-nitrobenzenediazonium tetrafluoroborate in acetonitrile.
We found that the grafting surfaces were chemically inert to strong acids and bases.
The grafted surfaceswere characterized and analyzed by cyclic voltammetry (CV), attenuated total reflectance Fourier transform infrared spectroscopy (ATR–FTIR), X-ray photo electron spectroscopy (XPS), scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX).
Implementation of electrochemically grafted TiO2 particles as photo-anodes in dye-sensitized solar cells (DSCs) showed that the grafted surface is capable of suppressing the undesired back-electron-transfer processes in dye-sensitized solar cells.
| Title: | Electrochemical grafting of TiO2-based photo-anodes and its effect in dye-sensitized solar cells |
| Authors: | Lund, Torben Nguyen, Phuong Tuyet Ruhland, Thomas |
| Keywords: | Electrochemical grafting Mesoporous metal oxides Reduction of diazonium salts Dye-sensitized solar cell Back-electron-transfer processes |
| Issue Date: | 2015 |
| Publisher: | Đại học Quốc gia Hà Nội |
| Citation: | ISIKNOWLEDGE |
| Abstract: | We demonstrate that hydroxyl-groupswhich are located on the surfaces of mesoporous metal oxides (in particular sintered layers of F-doped tin oxide (FTO) and TiO2 on glass plates) are capable of undergoing reactionswith 4-nitrobenzene radicals. The highly reactive benzene radicals are generated by the electrochemical reduction of 4-nitrobenzenediazonium tetrafluoroborate in acetonitrile. We found that the grafting surfaces were chemically inert to strong acids and bases. The grafted surfaceswere characterized and analyzed by cyclic voltammetry (CV), attenuated total reflectance Fourier transform infrared spectroscopy (ATR–FTIR), X-ray photo electron spectroscopy (XPS), scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX). Implementation of electrochemically grafted TiO2 particles as photo-anodes in dye-sensitized solar cells (DSCs) showed that the grafted surface is capable of suppressing the undesired back-electron-transfer processes in dye-sensitized solar cells. |
| Description: | JOURNAL OF ELECTROANALYTICAL CHEMISTRY Volume: 758 Pages: 85-92 Published: DEC 1 2015 ; TNS05537 ; 8 p. |
| URI: | http://repository.vnu.edu.vn/handle/VNU_123/26412 |
| Appears in Collections: | Bài báo của ĐHQGHN trong Web of Science |
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