铁离子掺杂TiO2基自洁净玻璃的制备及性能

用溶胶—凝胶法制备了表面镀有Fe—TiO2光催化薄膜的自洁净玻璃，并利用DTA—TG，XRD，SEM等手段研究了Fe—TiO2光催化薄膜的结构与特征。利用紫外—可见光分光光度计测量了不同镀膜层数的玻璃的透光率。通过光催化降解有机磷农药敌敌畏的水溶液，研究了不同铁含量以及不同镀膜层数对自洁净玻璃光催化活性的影响。研究结果表明：光催化薄膜主要由粒径为几十纳米的Fe3O4和TiO2颗粒构成；铁离子掺杂可以提高自洁净玻璃的光催化活性，在同样镀膜层数(2层)的情况下，Fe]/TiO2](摩尔比)＝0．005时的光催化性能最好；当用同样浓度的铁离子掺杂时，镀膜层数为9的光催化活性最高。

Preparation and Characteristics of Self-cleaning Glass Coated Fe-TiO2 Thin Film

The self cleaning glass coated Fe TiO 2 photo catalytic thin film was prepared by sol gel process from the system Ti (OC 4H 9) 4-NH(C 2H 4OH) 2-C 2H 5OH-H 2O containing FeCl 3. The microstructure and the properties of the films were studied by using DTA TG, XRD and SEM methods. The transmittance of the self cleaning glass was measured by using UV/VIS spectrometer. The effects of the amount of Fe addition and the thickness of the Fe TiO 2 thin film on the photo catalytic activity were examined . The results show that the photo catalytic thin films are in the solution of dichlorvos mainly composed of Fe 3O 4 and TiO 2 particles of 10~100 nm. The addition of appropriate amount of Fe 3+ is effective for improving the photo catalytic activities of TiO 2. The highest photo-catalytic activity is obtained when the / moles ratio is 0.005 and the glass is coated for nine times.