研究了阴极共电沉积制备Fe 3+掺杂TiO 2纳米薄膜(Fe-TiO 2)的新方法. 应用该方法、溶胶-凝胶法和浸渍法分别制备了具有可见光响应的Fe-TiO 2光催化剂. 并用XRD、SEM、EDS和UV-vis吸收光谱对Fe-TiO 2进行了表征. 结果表明, 与溶胶-凝胶法和浸渍法相比共电沉积法不仅能有效地实现Fe 3+在TiO 2中的均匀分布, 而且, 得到的光催化剂具有最大的比表面积和最好的光降解活性. Rhodamine B (RhB)降解实验表明, 在RhB光降解中存在光敏化和光催化降解的协同效应.
A novel cathodic co-electrodeposition (CCED) method for the preparation of Fe 3+ -doped TiO 2 thin film (Fe-TiO 2) was studied. The thin film photocatalysts of Fe-TiO 2 containing different amounts of Fe 3+ were prepared by the
CCED, wet impregnation and sol-gel methods. The photocatalysts were characterized by X-ray diffraction analysis (XRD), specific surface area measurements, SEM-EDS and UV-vis absorption spectra. In the three types of photocatalysts, the photocatalysts obtained by CCED not only have a more homogeneous distribution of Fe 3+ , but also have the largerst specific surface area and the photodegradation activity than those obtained by the other two. In addition, the experimental results show that there is a synergetic effect of photosensitization and photocatalytic in RhB degradation.
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