Method for preparing titanium dioxide crystalline state film at low-temperature

A technology of titanium dioxide and nano-titanium dioxide, which is applied in the direction of titanium dioxide, titanium oxide/hydroxide, coating, etc., can solve the problems of long cycle and achieve the effect of simple preparation method and firm combination
CN101314481AInactive Publication Date: 2008-12-03TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2008-12-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention discloses a method for preparing a crystalline titanium dioxide film at a low temperature, which comprises the steps of:(1) cleaning and drying a substrate;(2) immerging the substrate into an organic solvent solution of X(CH2)nSi(OCH3)3 for soaking, and taking out the substrate for cleaning and drying, wherein the X in the X(CH2)nSi(OCH3)3 is -SH or -CH3 or -Cl or -NH2, n is one of 1 to 16;(3) soaking the substrate in a supersaturation methanol solution of phosphoric anhydride, and taking out the substrate for cleaning and drying;(4) soaking the substrate in an aqueous solution of TiCl4 which contains hydrochloric acid to carry out nano titanium dioxide film deposition and growth, and thus the crystalline titanium dioxide film is made. The method is simple and causes no pollution to environment. The order assembly of phosphosilane on the surface of the substrate is realized, and the substrate is used as a template to direct the assembly and growth of the nanometer titanium dioxide at a low temperature without the need of high temperature calcination. The film has a certain crystal structure, but also fixedly bonded with the surface of the substrate.
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Description

technical field

[0001] The invention relates to a method for preparing a titanium dioxide film, in particular to a method for preparing a titanium dioxide film at low temperature. Background technique

[0002] With the rapid development of industries such as information, energy, and environment, newer and higher requirements are put forward for material performance. Therefore, the research and innovation of new materials must be an important topic and development basis for future scientific research. Due to the special physical and chemical properties of nanomaterials and the resulting special application value, they have become a hot spot in scientific research.

[0003] Titanium dioxide has stable chemical properties, can withstand acid or alkali corrosion, and will not decompose under light. TiO 2 It has the characteristics of high photocatalytic activity, stable chemical properties and high refractive index, so it has a very wide range of applications in the fields of ...

Claims

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