中文摘要：

由锐钛矿 TiO2 nanoparticles 和 lignosulfonates (LS ) 组成的 Photocatalytic 多层的 nanocomposite 电影被 layer-by-layer (LBL ) 在石英幻灯片上制作自己组装技术。X 光检查光电子光谱学(XPS ) ，紫外力的光谱学和原子力量显微镜学(AFM ) 被用来描绘多层的 nanocomposite 拍摄的 TiO2/LS。而且，多层的 nanocomposite 电影的 photocatalytic 性质(甲基橘子和细菌的分解) 被调查。XPS 结果显示钛和硫山峰的紧张与 LBL 免职过程增加了。在 280 nm 的吸收度的线性增加被紫外力的光谱学发现，建议逐步的多层的生长在底层上发生，这个免职过程是高度可再现的。AFM 图象证明当时，那个石英幻灯片被 TiO2 nanoparticles 完全盖住 10-bilayer 多层的电影被形成。由在时间与 TiO2 层的数字线性地增加了的一样的紫外照耀下面的 TiO2/LS 多层的电影的甲基橘子的分解效率，和在紫外照耀下面的细菌的分解的结果证明 TiO2/LS 多层的 nanocomposite 电影展出了细菌(Escherichia 卷) 的优秀分解活动。

英文摘要：

Photocatalytic multilayer nanocomposite films composed of anatase TiO2 nanoparticles and lignosulfonates （LS） were fabricated on quartz slides by the layer-by-layer （LBL） self-assembly technique. X-ray photoelectron spectroscopy （XPS）, UV-vis spectroscopy and atomic force microscopy （AFM） were used to characterize the TiO2/LS multilayer nanocomposite films. Moreover, the photocatalytic properties （decomposition of methyl orange and bacteria） of multilayer nanocomposite films were investigated. XPS results indicated that the intensities of titanium and sulfur peaks increased with the LBL deposition process. A linear increase in absorbance at 280 nm was found by UV-Vis spectroscopy, suggesting that stepwise multilayer growth occurs on the substrate and this deposition process is highly reproducible. AFM images showed that quartz slide was completely covered by TiO2 nanoparticles when a 10-bilayer multilayer film was formed. The decomposition efficiency of methyl orange by TiOz/LS multilayer films under the same UV irradiation time increased linearly with the number of TiO2 layers, and the results of decomposition of bacteria under UV irradiation showed that TiO2/LS multilayer nanocomposite films exhibited excellent decomposition activity of bacteria （Escherichia coil）.