Preparation method and application of high-efficiency ultraviolet visible full-spectrum photocatalytic material

A technology of photocatalytic materials and catalytic materials, applied in the field of environmental functional materials, can solve problems such as low energy utilization rate and photocatalytic efficiency, difficulty in realizing industrial production, and long preparation cycle, and achieve low production cost, easy long-term storage, good Effect of photocatalytic degradation performance

Inactive Publication Date: 2011-01-19
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, the preparation methods of bismuth oxychloride photocatalytic materials mainly include ionic liquid method, low temperature gas phase method, hydrothermal method, electrochemical deposition method, inverse microemulsion method, etc. The preparation cycle is long, the process is complicated, and the energy consumption is lar

Method used

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  • Preparation method and application of high-efficiency ultraviolet visible full-spectrum photocatalytic material
  • Preparation method and application of high-efficiency ultraviolet visible full-spectrum photocatalytic material
  • Preparation method and application of high-efficiency ultraviolet visible full-spectrum photocatalytic material

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Embodiment 1

[0028] The preparation process of the present embodiment, concrete steps are as follows:

[0029] a) Take 200 parts of distilled water, add 0.5 part of citric acid, 0.01 part of polyvinylpyrrolidone, and 0 part of sodium iodide respectively, and stir to dissolve it;

[0030] b) Heat the above mixed solution to 60°C in the heating mantle, slowly add 3 parts of bismuth chloride to it after it is stable, continue to stir at 60°C for 3 hours, wait for it to cool down at a speed of 8000r / min Centrifuge for 4 minutes;

[0031] c) placing the centrifuged product in step b in a vacuum drying oven at 60° C. for 4 hours;

[0032] d) Place the cooled product in an agate mortar and grind for 5 minutes.

Embodiment 2

[0034] The preparation method of this embodiment is the same as that described in Example 1, except that in step a) 200 parts of distilled water are taken, 0.5 part of citric acid is added thereto, 0.01 part of polyvinylpyrrolidone, and 0.14 part of sodium iodide is added , stir to dissolve.

Embodiment 3

[0036] The preparation method of this embodiment is the same as that described in Example 1, except that in step a) 200 parts of distilled water are taken, 0.5 part of citric acid is added thereto, 0.01 part of polyvinylpyrrolidone, and 0.2 part of sodium iodide is added , stir to dissolve.

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Abstract

The invention discloses a preparation method and application of a high-efficiency ultraviolet visible full-spectrum photocatalytic material and relates to a preparation method of a nano material which is doped with bromine and/or iodine and uses bismuth oxychloride as the matrix. The invention prepares the novel core-shell structured high-efficiency ultraviolet visible full-spectrum halogen-doped bismuth oxychloride photocatalytic material for the first time. The technical scheme is characterized in that the photocatalytic material has extremely high catalytic efficiency under the irradiation of a filament lamp, an iodine tungsten lamp, a daylight lamp and sunlight; the photocatalytic material has a wide catalytic degradation range and can carry out high-efficiency visible light catalytic decomposition on researched organic pollutants such as rhodamine B, methylene blue, methyl orange, 2,4,6-trichlorophenol, formaldehyde and the like; the degradation efficiency of the catalyst on the typical organic pollutant rhodamine B is up to 91% after the irradiation of sunlight for 10 minutes; the catalyst can be directly added to the paint to perform photo-absorption or degradation on formaldehyde and other harmful gases generated by interior finish and furniture; and the preparation method has the advantages of simple and convenient operation, energy saving and environment friendliness, thereby being applicable to large-scale industrial production.

Description

technical field [0001] The invention relates to a preparation method of an inorganic functional material, in particular to a preparation method of a high-efficiency ultraviolet-visible full-spectrum photocatalytic material, and the application of the photocatalytic material. It belongs to the technical field of environmental functional materials. Background technique [0002] Photocatalytic technology can make full use of cheap and "green" sunlight to effectively degrade organic pollutants. This technology is an important way to solve the current global environmental degradation and energy crisis. Traditional research mainly uses TiO 2 Photodegrades various typical organic pollutants, but TiO 2 The utilization rate of sunlight is limited, it can only absorb ultraviolet rays with a wavelength less than 387nm, and the photocatalytic degradation efficiency is not high, and there is no photocatalytic activity under visible light irradiation. Since less than 4% of the light en...

Claims

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Application Information

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IPC IPC(8): B01J27/06B01J35/08A62D3/10A62D101/28
Inventor 余锡宾张坤汪正军罗辉
Owner SHANGHAI NORMAL UNIVERSITY
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