Titanium dioxide/polyaniline nano-composite structure and preparation method thereof

Abstract

The invention discloses a titanium dioxide / polyaniline nano-composite structure and a preparation method thereof. The nano-composite structure takes FTO conductive glass as a substrate and comprises a layer of titanium dioxide nanometer rod array arranged on the FTO conductive glass and a layer of polyaniline nanometer flowers located on the titanium dioxide nanometer rod array. The preparation method of the titanium dioxide / polyaniline nano-composite structure includes the following steps: preparing a layer of titanium dioxide nanometer rod array on an FTO substrate through adoption of a hydrothermal method, and preparing a layer of polyaniline nanometer flowers on the titanium dioxide nanometer rod array through an in-situ compounding method to obtain the titanium dioxide / polyaniline nano-composite structure. The preparation method is simple and is cheap and available in raw materials, low in cost, and simple in synthetic process, and the product is stable in quality. The titanium dioxide / polyaniline nano-composite structure is composed of the titanium dioxide nanometer rod array and polyaniline nanometer flowers, and is regular and orderly in appearance, and good in repetition.

Description

technical field [0001] The invention relates to a titanium dioxide / polyaniline nanocomposite structure and a preparation method thereof. Background technique [0002] Titanium dioxide is an important inorganic functional material, which belongs to the electron-conducting (n-type) semiconductor, and is widely used in dye-sensitized solar cells and ultraviolet photoelectric sensors because of its strong photocatalytic activity and high redox potential. However, titanium dioxide is a wide-bandgap semiconductor and has little utilization rate for visible light. These own characteristics affect its large-scale application. Polyaniline is a hole-conducting (p-type) semiconductor conducting polymer, which has good environmental stability, easy preparation, low cost, and its conductivity varies with its doping state, and is easy to control. Therefore, titanium dioxide and polyaniline can be combined to achieve complementary advantages and improve their practical application effects...

AI Technical Summary

Problems solved by technology

[0002] Titanium dioxide is an important inorganic functional material, which belongs to the electronic conductivity type (n-type) semiconductor. It is widely used in dye-sensitized solar cells and ultraviolet photoelectric sensors because of its strong photocatalytic activity and high redox potential. and pollutant degradation, etc. However, titanium dioxide is a wide-bandgap semiconductor and has almost no utilization rate for visible light. These own characteristics affect its large-scale application.

The methods of polyaniline nanostructure include chemical oxidation method, electrochemical method, radiation synthesis method, etc. Among these synthesis methods, solution chemical oxidation method has unique advantages because of its simple operation and stable synthesis process. The method of preparing titanium dioxide / polyaniline nanocomposite structure has not been reported yet

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