Cu-TiO2 photocatalyst and preparation method thereof

A photocatalyst, titanium dioxide technology, applied in the direction of chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of slow degradation of pollutants, time-consuming, discontinuous and other problems, to achieve the effect of simplifying the preparation process, saving preparation time, and improving the degradation speed

Inactive Publication Date: 2015-06-24
ZHENGZHOU UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] TiO 2 It has been widely used in the field of photocatalysts, however, its existing chemical methods to synthesize Cu-TiO 2 As a photocatalyst, elemental copper is attached to the titanium dioxide nanoparticle structure, and there is no phase relationship with the titanium dioxide crystal plane. The structure is simple, and the existing products are often prepared in steps, that is: first prepare titanium dioxide particles, The

Method used

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  • Cu-TiO2 photocatalyst and preparation method thereof
  • Cu-TiO2 photocatalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] A kind of Cu-TiO 2 The preparation method of the photocatalyst is specifically carried out according to the following steps:

[0013] Add 2.5ml-3.5ml hydrofluoric acid and 0.6g-0.8g copper nitrate to 28ml-32ml n-tetrabutyl titanate, stir for 12 hours to form a blue solution, and hydrothermally synthesize at 175℃-185℃ for 12 hours. After the reaction is over, filter, wash, dry and grind to obtain Cu-TiO 2 catalyst of light.

Example Embodiment

[0014] Example 1

[0015] Add 3ml of hydrofluoric acid and 0.7g of copper nitrate to 30ml of n-tetrabutyl titanate, stir for 12 hours to form a blue solution, and hydrothermally synthesize at 180°C for 12 hours. After the reaction, filter, wash, dry and grind. , That is, Cu-TiO 2 catalyst of light.

Example Embodiment

[0016] Example 2

[0017] Add 2.5ml of hydrofluoric acid and 0.6g of copper nitrate to 28ml of n-tetrabutyl titanate and stir for 12 hours to form a blue solution. The reaction is hydrothermally synthesized at 175°C for 12 hours. After the reaction is completed, it is filtered, washed, dried and dried by suction. Grind to get Cu-TiO 2 catalyst of light.

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Abstract

The invention discloses a Cu-TiO2 photocatalyst. The structure of the Cu-TiO2 photocatalyst is formed by the epitaxial growth of element copper on a (101) crystal face of a titanium nano-sheet. The invention also discloses a preparation method of the photocatalyst. The preparation method comprises the steps of mixing 2.5ml to 3.5ml of hydrofluoric acid and 0.6g to 0.8g of copper nitrate with 28ml to 32ml of tetrabutyl titanate to obtain a mixture, stirring the mixture for 12 hours, carrying out the hydrothermal synthesis reaction for 12 hours at the temperature of 175 to 185 DEG C, filtering, washing, drying and grinding a reaction product after the reaction is ended, obtaining the Cu-TiO2 photocatalyst. The Cu-TiO2 photocatalyst has beneficial effects that the element copper grows on the (101) crystal face of the titanium dioxide nano-sheet in an epitaxial manner, so that the separation efficiency of a photon-generated carrier can be effectively improved, and the degradation speed for organic dye such as methyl blue can be greatly increased. The preparation process flow is simplified, and the preparation time and the preparation cost can be greatly saved.

Description

technical field [0001] The invention belongs to the technical field of nanometer photocatalytic materials and relates to a Cu-TiO 2 Photocatalyst, the present invention also relates to a kind of Cu-TiO 2 Preparation method of photocatalyst. Background technique [0002] TiO 2 It has been widely used in the field of photocatalysts, however, its existing chemical methods to synthesize Cu-TiO 2 As a photocatalyst, elemental copper is attached to the titanium dioxide nanoparticle structure, and there is no phase relationship with the titanium dioxide crystal plane. The structure is simple, and the existing products are often prepared in steps, that is: first prepare the titanium dioxide particles, Then depositing the copper particles takes too much time and costs a lot. If there is no mutual epitaxial growth relationship between copper and titanium oxide, the discontinuity of the interface will hinder the electron transport during the charge separation process, which will ea...

Claims

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Application Information

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IPC IPC(8): B01J23/72
Inventor 胡俊华张鹏王理杰张茜张彩丽李方邵国胜范佳杰张懿强姚志强毛景
Owner ZHENGZHOU UNIV
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