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利用水热法制备了几种过渡金属离子 (Zn2 +、Co2 +、Cu2 +)掺杂的TiO2 复合纳米粒子 (表示为M3d-TiO2 ) ,测定了M3d-TiO2 纳米结构多孔膜电极和用CdS敏化各掺杂电极的光电流作用谱和光电流 -电势曲线。实验结果表明 ,在所研究的M3d-TiO2 电极中 ,只有Zn2 +-TiO2 电极的光电流大于未掺杂的TiO2 纳米结构多孔膜电极。用CdS敏化各掺杂电极 ,避免了电子损失 ,大大提高了光电转换效率 ,讨论了敏化电极的光电转换机理
Several kinds of TiO2 composite nanoparticles (expressed as M3d-TiO2) doped with transition metal ions (Zn2 +, Co2 +, Cu2 +) were prepared by hydrothermal method. The effects of CdS on the electrode of M3d- Photoelectrochemical spectrum and photocurrent-potential curve of each doped electrode. The experimental results show that only the photocurrent of the Zn2 + -TiO2 electrode is larger than that of the undoped TiO2 nano-structured porous membrane electrode in the studied M3d-TiO2 electrode. Sensitized with CdS doped electrodes, to avoid the loss of electrons, greatly improving the photoelectric conversion efficiency, discussed the photoelectric conversion mechanism of the sensitized electrode