论文部分内容阅读
以四磺酸酞菁铜(CuPcTs)为敏化剂,玻璃和图案化的氧化铟锡(ITO)分别作为基底,制备了敏化薄膜TiO2-CuPcTs和ITO/TiO2-CuPcTs/ITO敏化器件.以罗丹明B(RhB)的可见光光催化降解为模型反应评价敏化薄膜的光催化性能.敏化薄膜采用UV-vis和Raman技术进行表征,同时利用敏化器件的结构特性,测定其在氮气和纯水体系下的光电流.研究结果表明,TiO2-CuPcTs可以有效地将光谱响应拓宽到可见光区,一级反应速率常数为空白TiO2薄膜的3.7倍.TiO2-CuPcTs薄膜光催化降解RhB的重复性能稳定.与ITO/TiO2/ITO器件相比,敏化器件ITO/TiO2-CuPcTs/ITO具有较高的光电流信号,验证了激发态的CuPcTs能够将电子转移到TiO导带上的敏化机理.
The sensitized films TiO2-CuPcTs and ITO / TiO2-CuPcTs / ITO sensitized devices were prepared by using CuPcTs as sensitizer, glass and patterned indium tin oxide (ITO) as the substrate respectively. The photocatalytic performance of sensitized films was evaluated by visible light photocatalytic degradation of rhodamine B (RhB). The sensitized films were characterized by UV-vis and Raman techniques. The sensitized films were characterized by nitrogen And pure water system.The results show that TiO2-CuPcTs can effectively broaden the spectral response to the visible light region, the first-order reaction rate constant is 3.7 times that of the blank TiO2 thin film.The photocatalytic degradation of RhB repeat of TiO2-CuPcTs films Compared with ITO / TiO2 / ITO devices, the sensitization device ITO / TiO2-CuPcTs / ITO has high photocurrent signal, which verifies the sensitization mechanism of excited CuPcTs to the conduction band of TiO .