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采用溶胶-凝胶法制备了一系列不同Fe3+含量的Fe3+/Ti O2纳米薄膜,运用X射线衍射仪、扫描电子显微镜、紫外可见分光光度计等手段对Fe3+/Ti O2进行了表征,并利用接触角测量仪考察了Fe3+含量、保存时间以及薄膜层数对亲水性的影响,同时以8 W(λ=254 nm)的UV灯作为光源,评价了各薄膜光催化降解亚甲基蓝的活性.结果表明,当Fe3+质量分数为0.5%时,Ti O2薄膜催化降解染料的活性得到大幅提高,同时也表现出了最好的亲水性,其薄膜表面与水的接触角几乎为0°.
A series of Fe3 + / Ti O2 thin films with different content of Fe3 + were prepared by sol-gel method. The properties of Fe3 + / Ti O2 were characterized by X-ray diffractometry, scanning electron microscopy and UV-visible spectrophotometer. The effect of Fe3 + content, storage time and the number of layers on the hydrophilicity were investigated by angle meter, and the photocatalytic degradation of methylene blue was evaluated with 8 W (λ = 254 nm) UV lamp as the light source. . When Fe3 + mass fraction is 0.5%, the activity of Ti O2 thin film catalyzed degradation dye is greatly improved, and also shows the best hydrophilicity. The contact angle of water with thin film surface is almost 0 °.