TiO2 nanotube with molecular imprinting functionalization

A molecular imprinting and nanotube technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problem of poor mechanical and thermal stability of organic polymer imprinted matrix, affecting light absorption and charge transport, and unstable shape memory. and other problems, to achieve the effect of reducing entrapment phenomenon, reducing non-specific adsorption, and high mechanical strength

Inactive Publication Date: 2009-09-16
HUNAN UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the organic polymer imprinted matrix is ​​modified TiO 2 There are some problems when used in photocatalysis: imprinted polymer covered in TiO 2 Surface-affected TiO 2 Light absorption and charge transport; the imprinted polymer will degrade during the photocatalytic process; the organic polymer imprinted matrix has poor mechanical and thermal stability, resulting in unstable shape memory

Method used

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  • TiO2 nanotube with molecular imprinting functionalization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) TiO 2 Preparation of nanotubes

[0020] Under 35-60V DC voltage, pure titanium or titanium alloy is used as anode, platinum sheet is used as cathode, and TiO is prepared in an electrolyte mixed with hydrofluoric acid and dimethyl sulfoxide with a mass percentage of hydrofluoric acid of 0.5-3%. 2 The nanotubes are calcined at 400-500° C. under aerobic conditions for 4-6 hours to crystallize and form them.

[0021] (2) Imprinted functionalized TiO 2 Nanotube preparation

[0022] Prepared by surface sol-gel technology: the preparation process is as follows figure 1 shown. figure 1 Among them, M=Zn, R is isopropyl or n-butyl, ● represents organic pollutant molecules, Represents the vacancies left in the film after removal of organic pollutant molecules.

[0023] TiO 2 The nanotubes are immersed in an alcohol solution of tetraisopropyloxyzinc containing octabromodiphenyl ether imprinted molecules for a period of time, then hydrolyzed, and then dried in air. Accor...

Embodiment 2

[0025] In Example 1, M is replaced by Ti, and all the other conditions are the same as in Example 1, and octabromodiphenyl ether imprinted TiO can be prepared. 2 Thin film modified TiO 2 nanotube.

Embodiment 3

[0027] Using Zr instead of M in Example 1, all the other conditions are the same as in Example 1, and octabromodiphenyl ether imprinted ZrO can be prepared. 2 Thin film modified TiO 2 nanotube.

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Abstract

The invention discloses a TiO2 nanotube with molecular imprinting functionalization and relates to a TiO2 nanotube with inorganic semiconductor film modification of organic pollutant imprinting; wherein, the imprinting matrix material is an inorganic semiconductor; and the imprinting molecule is an organic pollutant. The molecular imprinting polymer synthesized by molecular imprinting technology which adopts inorganic nano material as imprinting matrix has high mechanical strength and the identification point is not easy to be damaged. As an absorptive carrier, the TiO2 nanotube greatly reduces nonspecific absorption and reduces embedding phenomenon, thus having very optimistic development prospect in the aspects of photocatalysis, mimic enzymes, sensors and biometric identification, etc.

Description

technical field [0001] The invention relates to a novel structure of imprinted functionalized TiO 2 nanotube material. Background technique [0002] Due to the weak chemical reaction functionality and hydrophobicity of most organic pollutant molecules, the hydrophilic TiO 2 The surface adsorption is very low, which is also the use of TiO 2 Eliminate one of the bottlenecks of hydrophobic organic pollutants, thus enhancing the organic pollutants in TiO 2 The adsorption research on the surface of photocatalytic materials is very important for the efficient reduction of organic pollutants. Molecular imprinting technology, an artificial biological template technology that simulates antibody-antigen specific recognition and binding, has aroused everyone's interest. In this technique, template molecules (imprinted molecules) form stable molecules with one or more functional monomers through covalent bonds or non-covalent interactions such as hydrogen bonds, van der Waals forces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/047
Inventor 罗胜联刘承斌唐艳红杨丽霞刘荣华何晔娟
Owner HUNAN UNIV
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