C,N-doped TiO2 nanotubes used in water photoelectrolysis and dye-sensitized solar cells

• Main Authors: Chu, Ya-Ling, 朱雅玲
• Other Authors: Lin, Ming-Chang
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/19879432820554039570

碩士 === 國立交通大學 === 應用化學研究所 === 98 === In this research, we study the fabrication of vertically grown TiO2 nanotube arrays with high aspect ratios by potentiostatic anodization of Ti foil in fluoride ion containing baths in combination with non-aqueous organic polar electrolyte like formamide, and the application of the nanotubes for dye-sensitized solar cells and hydrogen production by water photoelectrolysis system in the visible and ultraviolet light regions. The ultraviolet light region showed a better efficiency than the visible region. The properties of the synthesized TiO2 nanotubes have been characterized with the SEM, XRD, the photocatalytic degradation of Methyl Red Dye, and the water splitting efficiency using different electrolytes. We learn the best anodization electrolyte condition is 5% DI water + 0.55wt %NH4F + 95% formamide, the best annealing temperature is 500℃, and the best water splitting electrolyte is KOH. We have also observed a significant enhancement effect of InN nanoparticles deposited on the C,N-doped TiO2 nanotubes on the efficiency of N3 dye for solar cell operation.