Zirconia titanium dioxide composite nano tube photocatalysis film material and preparation method thereof

Abstract

The invention relates to a zirconia titanium dioxide composite nano tube photocatalysis film material and a preparation method thereof. The preparation method comprises the following steps: adopting a through hole anodized aluminum film as a template, and assembling layer by layer in an anodized aluminum template hole channel by using a titanium tetrafluoride and zirconium nitrate liquid phase deposition technique so as to form a zirconia titanium dioxide composite nano tube photocatalysis film with the anodized aluminum template; washing and drying the prepared film, and subsequently performing heat preservation at the temperature of 400-600 DEG C for 2-4 hours to prepare the zirconia titanium dioxide composite nano tube photocatalysis film. Due to adoption of the method, firstly, equipment is simple, the operation is easy, and the film can be prepared in large scale; secondly, the prepared nano material is high in catalysis activity and easy to recycle, and can be recycled and reused; thirdly, under the shining of an ultraviolet lamp, the zirconia titanium dioxide composite nano tube photocatalysis film is high in catalyzing and degrading efficiency of organic pollutant such as methyl orange, and the efficiency is five times that of a pure titanium dioxide nano tube photocatalysis film. At present, relevant reports about the zirconia titanium dioxide composite nano tube photocatalysis film formed by assembling layer by layer in the anodized aluminum template hole channel by using the liquid phase deposition technique are not available in China and other countries.

Description

Technical field: [0001] The invention relates to the field of nanomaterial preparation, in particular to the preparation of a zirconia-titania composite nanotube photocatalytic film material specially used for photocatalytic degradation of organic pollutants and a preparation method thereof. Background technique: [0002] In the 20th century, with the rapid development of industries such as petroleum, chemical and pharmaceutical industries, the treatment of industrial wastewater has become a research hotspot all over the world. The research on the efficient and non-environmental pollution photocatalytic oxidation technology in wastewater treatment has attracted much attention. Studies have shown that if two or more semiconductor materials can be combined, the catalytic activity will be significantly improved. Moreover, the composite of certain materials also increases the total specific surface area of ​​the catalyst, which is also beneficial to increase the reaction rate. ...

AI Technical Summary

Problems solved by technology

The zirconia and titania composite process prepared by this method is relatively complicated, and generally requires two treatments, that is, the preparation of the two oxides is completed first and then the composite treatment is performed, and the prepared product has an irregular granular structure. Difficult to recycle in the process

Rahima A. Lucky et al. (Rahima A.Lucky, Ruohong Sui, John M.H.Lo, Paul A.Charpentier, Crystal Growth & Design, 10 (2010) 1598–1604) used titanium isopropoxide and zirconium n-propoxide as raw materials to use sol The one-dimensional zirconia-titania composite structure is prepared by the gel method, specifically the single-layer nanotube structure. Although the nanocomposite structure prepared by this method can be completed at one time, the prepared sample still exists in a dispersed state. In the end, it is difficult to solve its load problem, and it is not easy to recycle in the process of sewage treatment, causing secondary pollution

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