Photocatalyst CN-ZnO and preparation method and application thereof

A photocatalyst and zinc compound technology, applied in the field of photocatalytic materials, can solve the problems of low methylene blue degradation rate, operator casualties, unstable catalytic activity of visible light catalysts, etc.

Inactive Publication Date: 2015-12-30
FUYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this preparation method requires the use of corrosive chemical ammonium bifluoride, which will generate toxic fluoride when it meets water, which will not only pollute the environment, but may also cause casualti

Method used

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  • Photocatalyst CN-ZnO and preparation method and application thereof
  • Photocatalyst CN-ZnO and preparation method and application thereof
  • Photocatalyst CN-ZnO and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0065] Example 1

[0066] (1) Use an electronic balance to accurately weigh 0.125g zinc acetate, fully dissolve it in 20ml deionized water, then add the weighed 10g melamine, place the mixed solution on a magnetic stirrer and stir vigorously for 1h to make the solution well mixed. The stirred mixture was dried in vacuum at 80°C for 4h;

[0067] (2) After grinding the dried mixture, place it in a crucible, cover it, and place it in a muffle furnace for calcination at 520°C for 6 hours. After calcination, cool it and grind the cooled solid to a D50 particle size of 50nm , Prepared CN-ZnO catalyst sample, denoted as gC 3 N 4 -ZnO-6.

Example

[0068] Examples 2~4

[0069] The methods used in Examples 2 to 4 are similar to those in Example 1, except that the calcination time in step 2 is 8h, 10h and 12h respectively, and the prepared photocatalysts are respectively denoted as g-C 3 N 4 -ZnO-8, g-C 3 N 4 -ZnO-10 and g-C 3 N 4 -ZnO-12.

Example Embodiment

[0076] Experimental example 1 Infrared spectroscopy measurement of samples

[0077] The samples used in this example are prepared from Examples 1 to 4 and Comparative Examples 1 to 2.

[0078] Operation method: Take a small amount of the above photocatalyst samples, add them to potassium bromide powder, grind them to mix the sample and potassium bromide uniformly, press them into thin slices, use Fourier transform infrared spectrometer to perform infrared spectroscopy on the catalyst, the results are as follows figure 2 As shown, where

[0079] Curve a shows the infrared spectrum curve of the sample prepared in Comparative Example 2;

[0080] Curve b shows the infrared spectrum curve of the sample prepared in Example 1;

[0081] Curve c shows the infrared spectrum curve of the sample prepared in Example 2;

[0082] Curve d shows the infrared spectrum curve of the sample prepared in Example 3;

[0083] Curve e shows the infrared spectrum curve of the sample prepared in Example 4;

[0084]...

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Abstract

The invention provides a photocatalyst CN-ZnO and a preparation method and application thereof. According to the photocatalyst CN-ZnO, nitrogen-containing organic matter and a zinc-containing compound serve as raw materials, and the photocatalyst containing graphite-phase carbon nitride (abbreviated as CN) and zinc oxide can be prepared through a hydrothermal method, is a composition and has a good catalytic degradation effect on organic dye and particularly azo type organic dye such as methyl orange under visible light.

Description

technical field [0001] The invention belongs to the field of photocatalytic materials, and relates to an inorganic photocatalyst and its preparation method and application. Background technique [0002] In recent years, with the rapid development of industrial production, the problems of energy and environmental pollution have been widely concerned by people. The requirements for industrial pollution control technology are increasing, and there are more and more researches on photocatalytic technology in environmental control. The use of solar energy to photocatalyze the degradation of pollutants has been one of the hotspots of research. Under the irradiation of light, semiconductor materials can promote the synthesis of compounds or degrade compounds by converting light energy into chemical energy. This is the so-called photocatalytic technology. [0003] Usually TiO 2 As a catalyst for environmental purification, for example, Huang Juanru et al reported TiO in Industria...

Claims

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Application Information

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IPC IPC(8): B01J27/24C02F1/30C02F101/38
CPCY02W10/37
Inventor 李慧泉崔玉民苗慧
Owner FUYANG NORMAL UNIVERSITY
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