Nano Tio <sub> 2 </ Sub> Catalyst And By Ecr Nitrogen Plasma On Its Modification Research

With the excessive exploitation of natural resources and grave pollution of environment, the deterioration of ecological environment becomes more and more serious. It is urgent to develop ecomaterials, which use economically energy and have no harm to environment. With its renewal ability and storability of energy and friendliness of environment, nano-semiconductor TiO2 is the very novel green purificant. Now its relevant study becomes the focus of the field of photocatalysis, especially in wastewater treatment. However, the nano-TiO2 powders in liquor are vrey difficult to recycle and easy to be poisoned. Further more, the nano-TiO2 absorbs visible light very poor. As a result, it is difficult to realize its commercialization. The pertinent research work has been carried out as follows:The transparent nano-TiO2 films on soda-lime glass substrates were obtained by sol-gel process. The precursor of nano-TiO2 film was Ti (OC4H9) 4 and the menstruum was C2H5OH. The preparation conditions which were effecting the nano-TiO2 quality were researched. The nano-TiO2 quality was improved by prepared in the ultrasonic condition.The 1 optical absorption property of nano-TiO2 film doped with nitrogen by ECR plasma was studied systematically. The research result shows that doped time and power has great effect on the 1 optical absorption of TiO2. There is the best value for dopant. Over higher or lower dopant concentration is disadvantageous for the 1 optical absorption property. The AFM scans has shown that the sample's external configuration has not been defaced. The UV-Vis instrument test has shown that the absorb spectrum has been move 12nm-18nm to the infrared. With different power and implanting time, the feasible conditions are under the four hundred watt and sixty minutes. The reason for the nitrogen doped herein lies in the fact it contributes to formation of doped energy band. The result is detailedly proved by the XPS test.The hydrophilicity of the modified nano-TiO2 film was also studied. The ruslt shows that the hydrophilic angle has a little increase, but its super hydrophilicity is not alterant, and also shows the hydrophilic angle increasing on open entironment is slowing.