Photocatalytic film and method for preparing photocatalytic film by vapor deposition method

A photocatalytic film and photocatalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as low concentration and difficult enrichment, affecting photocatalytic activity, and narrow visible light response range

Inactive Publication Date: 2019-06-07
HEILONGJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

To deal with these toxic organic pollutants, there are several problems: low concentration is difficult to enrich, difficult to separate from the water system, and difficult to degrade under natural conditions
[0006] Although graphitic carbon nitride has excellent thermal stability, chemical stability and visible light photocatalytic activity, due to the charact

Method used

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  • Photocatalytic film and method for preparing photocatalytic film by vapor deposition method
  • Photocatalytic film and method for preparing photocatalytic film by vapor deposition method
  • Photocatalytic film and method for preparing photocatalytic film by vapor deposition method

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preparation example Construction

[0088] (3) The preparation method provided by the invention has simple process and strong operability;

[0089] (4) The raw materials of the preparation method provided by the present invention are easy to get, the area of ​​the photocatalytic film produced is controllable, and a composite film with a larger area can be prepared, which is suitable for the treatment of actual continuous sewage;

[0090] (5) The photocatalytic film provided by the present invention can also carry out continuous photocatalytic treatment of flowing wastewater.

Embodiment 1

[0095] Get the carbon paper prepared by the present invention as base film material, and its area is 15cm2 , placed flat in a crucible with a lid;

[0096] Then pave 7.5g of precursor urea on the bottom of the basement membrane material, and the ratio of the quality of the precursor to the area of ​​the basement membrane material is 0.5g / cm 2 ; and the vertical distance between the basement membrane material and the precursor is 1cm;

[0097] Put the above-mentioned crucible containing the base film material and the precursor in a tubular muffle furnace, replace the muffle furnace with nitrogen, turn on the power of the muffle furnace, increase the temperature at a rate of 3.3°C / min to 550°C, and calcine for 3h. A photocatalytic film was obtained, which was recorded as 1.

Embodiment 2

[0099] The method used in this embodiment is the same as that in Example 1, except that the amount of the precursor used is that the ratio of the mass of the precursor to the area of ​​the base film material is 0.3 g / cm 2 . Finally, the photocatalytic film was obtained, denoted as 2.

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Abstract

The invention provides a photocatalytic film and a method for preparing the photocatalytic film by a vapor deposition method. An existing inorganic film with a porous structure is used as a base filmmaterial, and a precursor containing carbon and nitrogen elements is tiled under the base film material, then calcination is performed under the protection of an inert gas, and the photocatalytic filmis prepared in one step by the vapor deposition of the precursor thermal polymerization. The photocatalytic film has high photocatalytic activity, is convenient for recycling and reuse, and can be applied to the degradation and treatment of soluble organic pollutants in a static or dynamic wastewater with high degradation efficiency. The preparation method of the photocatalytic film is simple inoperation, the precursor and the base material are easy to obtain, the area of the produced photocatalytic film is controllable, and the photocatalytic film with a relatively large area can be prepared. The photocatalytic film and the preparation method of the photocatalytic film are suitable for the actual continuous sewage treatment, and are convenient for popularization and application.

Description

technical field [0001] The invention relates to a photocatalytic film and a preparation method thereof, in particular to a photocatalytic film in which a photocatalyst graphite phase carbon nitride is vapor-phase-deposited on an existing inorganic porous film, and the photocatalytic film can be applied to the treatment of toxic organic matter. Background technique [0002] With the development of society, the destruction of nature by human beings is also increasing, and various problems have arisen as the times require, among which water pollution has attracted much attention. Every year, a large number of refractory toxic organic pollutants enter the natural water system along with industrial and domestic sewage. There are several problems in dealing with these toxic organic pollutants: low concentration is difficult to enrich, difficult to separate from the water system, and difficult to degrade under natural conditions. [0003] Photocatalysis technology, especially vis...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/06C02F1/30C02F101/30
Inventor 孙立国窦天威孙治尧虢德超韩晓宁张洪岩
Owner HEILONGJIANG UNIV
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