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Carbon-doped TiO2 visible light-responding catalytic film on glass carrier and preparation method thereof

A photocatalytic film and glass sheet technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc. Photocatalytic activity, solving the effect of easy loss

Inactive Publication Date: 2014-01-15
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a photocatalyst and preparation method that can respond to visible light, and the photocatalyst has high photocatalytic efficiency under visible light conditions, and can be loaded on a carrier with stable physical and chemical properties in the form of a thin film, thereby solving the problem of TiO 2 Photocatalysts cannot utilize sunlight and powdered TiO 2 easily lost problem

Method used

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  • Carbon-doped TiO2 visible light-responding catalytic film on glass carrier and preparation method thereof
  • Carbon-doped TiO2 visible light-responding catalytic film on glass carrier and preparation method thereof
  • Carbon-doped TiO2 visible light-responding catalytic film on glass carrier and preparation method thereof

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Embodiment 1

[0024] Carbon-doped TiO on a glass flake carrier 2 Visible light-responsive catalytic membrane, which uses Tween 80 as a template ion and carbon source to prepare non-metallic carbon-doped nano-TiO 2 Photocatalytic thin films, the non-metallic carbon-doped nano-TiO 2 The photocatalytic film is supported on the glass flake carrier, and the non-metallic carbon doped nano-TiO 2 C and TiO in photocatalytic thin films 2 The mass ratio is 0.62:99.38.

[0025] Its preparation method is:

[0026] 1. Non-metallic carbon-doped nano-TiO 2 Preparation of photocatalytic thin film precursor sol:

[0027] Dissolve 10 mL of Tween 80 surfactant in 40 mL of isopropanol and stir. After Tween 80 is completely dissolved, slowly add 6 mL of isopropyl titanate and stir for 5 min. After mixing evenly, add 6 mL of glacial acetic acid, and then increase Magnetic stirring speed, after vigorous stirring for 10 min, the reactor was sealed, stirred and aged at room temperature for 24 h, and a transpa...

Embodiment 2

[0031] Carbon-doped TiO on a glass flake carrier 2 Visible light-responsive catalytic membrane, which uses Tween 80 as a template ion and carbon source to prepare non-metallic carbon-doped nano-TiO 2 Photocatalytic thin films, the non-metallic carbon-doped nano-TiO 2 The photocatalytic film is supported on the glass flake carrier, and the non-metallic carbon doped nano-TiO 2 C and TiO in photocatalytic thin films 2 The mass ratio is 0.49:99.51.

[0032] The preparation method is the same as that of Example 1, except that the amount of Tween 80 used in step 1 is 5 mL.

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Abstract

The invention discloses a carbon-doped TiO2 visible light-responding catalytic film on a glass carrier. The carbon-doped TiO2 visible light-responding catalytic film on the glass carrier is prepared by taking tween 80 as template ions and a carbon source to prepare a non-metallic carbon-doped nano TiO2 photocatalytic film, and loading the non-metallic carbon-doped nano TiO2 photocatalytic film on the glass carrier. The invention further discloses a preparation method of the catalytic film. The TiO2 catalyst film can utilize 400-700nm visible light for photocatalytic reaction and can directly utilize inexhaustible sunlight as a light source; by doping a non-metallic element carbon, separation of TiO2 photo-generated electrons and a hole can be facilitated, so that the catalytic film can fully play an oxidizing and reducing role and the photocatalytic activity can be improved; and the catalytic film is loaded on the glass carrier with stable physical and chemical properties, thereby overcoming the defects of easy loss and difficult recycle of a powdery catalyst in the using process and the like.

Description

technical field [0001] The invention belongs to the technical field of environmental materials, in particular to a TiO 2 Photocatalytic thin film and preparation method thereof, especially carbon-doped TiO on glass flake support 2 Visible light-responsive catalytic film and its preparation method. technical background [0002] Photocatalytic oxidation technology is a water pollutant treatment technology that has attracted much attention in recent years and has been extensively studied. TiO 2 Stable chemical properties, non-toxic, cheap, mild reaction conditions, wide-spectrum purification objects, and no secondary pollution, are considered to be a promising deep purification technology for environmental pollution. But with TiO 2 As a photocatalyst to treat wastewater, it still stays in the laboratory stage and has not yet entered the practical application. The main reasons are: (1) pure TiO 2 Photocatalytic activity can only be found under ultraviolet light with a wavel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18
Inventor 刘广龙朱端卫蔡建波周文兵赵建伟华玉妹龚荔
Owner HUAZHONG AGRI UNIV
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