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在钛溶胶制备过程中加入天然电气石微粉,制得含电气石的钛溶胶,然后在紫铜表面镀膜形成含电气石的TiO2复合薄膜。用SEM研究电气石/TiO2复合薄膜的显微结构特征;用光催化降解甲基橙实验研究电气石微粉对TiO2薄膜光催化活性的影响。结果表明:电气石微粉能均匀的分布在紫铜表面的TiO2薄膜中,且形成了以电气石为核心的TiO2微粒簇,其中TiO2微粒具有阶梯层状结构和表面纳米凸起。用紫外线照射3h后,与不含电气石的TiO2薄膜相比,含质量分数为0 54%电气石的TiO2单层和双层复合薄膜对甲基橙的光催化降解率可分别提高12 1%和28 6%。
In the preparation of titanium sol by adding natural tourmaline powder, obtained tourmaline-containing titanium sol, and then coated on the copper surface to form tourmaline containing TiO2 composite film. The microstructure characteristics of tourmaline / TiO2 composite films were studied by SEM. The photocatalytic degradation of methyl orange was used to study the effect of tourmaline powders on the photocatalytic activity of TiO2 films. The results show that the tourmaline powder can be uniformly distributed on the surface of TiO2 film and the TiO2 particle clusters with tourmaline as the core are formed. The TiO2 particles have a step-like layered structure and a surface nano-protrusion. Compared with the TiO2 film without tourmaline, the photocatalytic degradation rate of methyl orange by TiO2 monolayer and double-layer composite film containing 0 54% tourmaline can be improved by 12 1% And 28 6%.