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Organic conductive macromolecule TiO2 compound membrane and its preparation method

A technology of conductive polymers and composite membranes, applied in chemical instruments and methods, catalyst activation/preparation, layered products, etc., can solve the problem of rarely using organic substances, and achieve the effect of improving photocatalytic activity

Inactive Publication Date: 2006-07-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional preparation methods have many options for doping substances, such as transition metals, rare earth metals, photosensitizers, other semiconductors, etc., but due to the limitation of high temperature treatment in traditional preparation methods, they are rarely used in the preparation process to organic matter

Method used

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  • Organic conductive macromolecule TiO2 compound membrane and its preparation method
  • Organic conductive macromolecule TiO2 compound membrane and its preparation method
  • Organic conductive macromolecule TiO2 compound membrane and its preparation method

Examples

Experimental program
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Effect test

specific Embodiment 1

[0020] The preparation of the composite film is divided into PEDT / PSS film layer preparation and TiO 2 The film layer was prepared in two steps. Using the dip-pulling method, the blank glass slide was used as the substrate, and the film was pulled with a coating solution containing polyethylenedioxythiophene (PEDT / PSS) doped with polystyrene sulfonate (PSS). The pulling speed was 3 cm / min, the wet film was dried at room temperature, and then the pulling was repeated. After the pulling is finished, dry at room temperature to obtain the PEDT / PSS film layer. Using the glass slide coated with this PEDT / PSS film as a substrate, use the same method to dip-coat TiO 2 sol, TiO can be obtained after drying 2 - PEDT / PSS composite film. Since the high temperature treatment of the traditional preparation method is avoided, the organic matter and TiO 2 It is possible to form a double-layer structure (such as figure 1 Shown) the composite film, figure 1 The legend in the middle shows...

specific Embodiment 2

[0025] On the basis of Example 1, under the premise of ensuring the stability of the underlying conductive polymer layer, the composite film is properly heat-treated (100-350°C) to increase the TiO 2 Layer TiO 2 degree of crystallization.

specific Embodiment 3

[0026] Figure 5 For organic conductive polymer-TiO 2 The embodiment of composite multi-layer film adopts derivative TDAPB (1,3,5-tris[N,N-bis(4,5-methoxy-Phenyl) aminophenyl]benzene) of conducting polymer PEDT / PSS, aniline, and TiO 2 Sol, prepare TDAPB layer 12, PEDT / PSS layer 13 and TiO on the substrate 11 in sequence 2 Layer 14, forming a multilayer structure. Since the lowest unoccupied orbital potential of TDAPB (-5.1eV) is lower than that of PEDT / PSS (-4.9eV), and the lowest unoccupied orbital potential of PEDT / PSS is lower than that of TiO2 conduction band (about -4.5eV), the difference between the three presents a gradient change from TiO 2The electrons injected into the PEDT / PSS layer can be further injected into the TDAPB layer, so it can effectively improve the TiO 2 The injection efficiency of the layer photogenerated electrons can enhance the photocatalytic activity of the composite film.

[0027] In the present invention, the organic conductive polymer film...

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Abstract

The invention relates the organic conductive macromolecule TiO2 complex film and manufacturing method. It comprises TiO2 film comprising two-layer films, one of which is compounded with TiO2 film. The method comprises the following step: using blank slide glass as basement, reduplicate drawing film with the paint film liquid containing organic conductive macromolecule by dipping; using the basement coated with organic conductive macromolecule as basement, dip-coating the TiO2 sol, and drying. The method improves the method of TiO2 film photocatalysis activity, and enhances the application foreground.

Description

technical field [0001] The present invention relates to a kind of film product and its preparation method, more specifically, the present invention relates to a kind of organic conductive macromolecule-TiO 2 Composite membrane and method for its preparation. Background technique [0002] In 1972, Japanese scholars discovered that TiO 2 Single crystal electrodes can photo-split water at room temperature, after which TiO 2 photocatalytic properties have attracted widespread attention. The current research in this area is mainly to achieve two goals through doping or surface treatment: one is to combine TiO 2 The response to light expands from the ultraviolet region to the long-wave direction; the second is to suppress TiO 2 The recombination of photogenerated electron-hole pairs improves TiO 2 photocatalytic activity. Traditional preparation methods have many options for doping substances, such as transition metals, rare earth metals, photosensitizers, other semiconducto...

Claims

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Application Information

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IPC IPC(8): B32B27/06B32B33/00B01J21/06B01J37/02
Inventor 杨辉申乾宏高基伟
Owner ZHEJIANG UNIV