Catalyst for degrading rhodamine B by photocatalysis, and preparation method thereof

A catalyst and photocatalysis technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. Good, slow photodegradation rate and other problems, to achieve the effect of low production cost, good repeatability and simple operation

Inactive Publication Date: 2012-02-22
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At first, titanium dioxide was the earliest photodegradable material, and people have done a lot of research on it. However, due to its slow photodegradation rate and poor sensitivity to visible light, it cannot be used in actual water pollution treatment.

Method used

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  • Catalyst for degrading rhodamine B by photocatalysis, and preparation method thereof
  • Catalyst for degrading rhodamine B by photocatalysis, and preparation method thereof
  • Catalyst for degrading rhodamine B by photocatalysis, and preparation method thereof

Examples

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Embodiment Construction

[0012] Synthesis of catalyst material of the present invention:

[0013] First disperse 0.005 mol of bismuth nitrate evenly into 30 ml of deionized water, then slowly add 5 ml of 0.5 mol / L ammonium molybdate solution into the above aqueous solution, and stir evenly to obtain A solution. 0.5 mmol of butyl titanate was added to 5 ml of ethanol, and the mixture was fully stirred to obtain solution B. Then slowly pour B solution into A, stir at room temperature for 30 minutes, add 5 mol / liter of sodium hydroxide solution, adjust the pH value of the solution to 7, and then put the above solution into a 50 ml polytetrafluoroethylene reactor , and then placed in a muffle furnace at 150°C for calcination for 5 hours. The calcined sample was filtered and washed several times, and then placed in a muffle furnace for calcination at 300° C. for 5 hours to obtain the target catalyst.

[0014] like figure 1 , figure 2 Shown, show through X-ray powder diffraction test, the diffractogram...

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Abstract

The invention relates to a catalyst for degrading rhodamine B by photocatalysis, and a preparation method thereof. The catalyst is prepared from TiO2-supported Bi2MoO6, wherein a molar ratio of the TiO2 to the Bi2MoO6 is 10%. With the induction of visible light, 100 ml of the rhodamine B with the concentration of 10<-5> mol / L can be completely degraded in 2 hours with 0.1 g of the catalyst. According to the present invention: 1, the catalyst of the present invention is prepared by a hydrothermal method, the operation is simple, the production cost is low, the synthesis yield is high, the purity is high, the reproducibility is good, and the method is applicable for the requirements of expanded production; 2, the catalyst of the present invention has characteristics of good thermal stability, strong acid resistance and strong alkali resistance; 3, the catalyst of the present invention has a good effect of photocatalytic degradation of organic materials, and the catalytic efficiency of the catalyst of the present invention is improved by 2 times than the catalytic efficiency of the single Bi2MoO6.

Description

technical field [0001] The invention relates to a catalyst for photocatalytically degrading rhodamine B and a preparation method thereof. Background technique [0002] With the development of human society and the massive consumption of fossil energy, environmental pollution has also come one after another, which has become a key issue that people have to consider. Water is a necessary condition for people to survive, so water pollution treatment has become a major concern of human beings. [0003] Although my country has done a lot of useful work on the treatment of various wastewater, the growth rate of the treatment capacity is far slower than the speed of water pollution. Of course, there are many reasons for this, among which backward technology is one of the main reasons. At present, the traditional wastewater treatment methods in my country can be divided into three categories: physical method, chemical method and biological method according to the principle of actio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/31C02F1/30C02F101/38
Inventor 邹建平张龙珠丁琳代顺臣沈琴邢秋菊
Owner NANCHANG HANGKONG UNIVERSITY
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