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A kind of detergent, its preparation method and application

A decontamination agent and solvent technology, applied in the direction of separation methods, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of catalyst surface state, crystal structure, particle size, morphology and catalytic activity, and organic pollution. There are many kinds of substances, the influence of photocatalytic activity and other problems, to achieve the effect of improving visible light catalytic performance, wide applicability and stable product performance

Active Publication Date: 2021-10-15
CHINESE ACAD OF INSPECTION & QUARANTINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the nano-TiO 2 There are many preparation methods, and the surface state, crystal structure, particle size, morphology and catalytic activity of catalysts obtained by different methods are different, even if the nano-TiO prepared by the same method 2 , its preparation conditions, such as precursor concentration, temperature, time, heat treatment conditions, etc. will also affect the photocatalytic activity, while the organic pollutants are various and complex in structure, and the photocatalytic decomposition path and mechanism vary with the molecular structure. Therefore, different photocatalysts are suitable for different degradation objects. For a certain target pollutant, it is difficult to select the best catalyst theoretically. It must be screened or verified by experiments.

Method used

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  • A kind of detergent, its preparation method and application
  • A kind of detergent, its preparation method and application
  • A kind of detergent, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Prepare dilute sulfuric acid solution according to the volume ratio of concentrated sulfuric acid and deionized water 1:400; add 10g TiOSO to 400mL prepared solution 4 , after mixing evenly, add 30g of urea several times with constant stirring, and then add 35.7mL of Fe(NO 3 ) 3 9H 2 O solution. The mixture was stirred at constant temperature at 95°C for 8 h, and then cooled to room temperature naturally. The resulting precipitate was washed with deionized water, filtered three times, and dried in a vacuum oven at 60°C for 24 hours. Grind the resulting dry powder, calculate the theoretical mass fraction of titanium dioxide doped with iron to be 4%, and mark it as 4wt% Fe / TiO 2 . Using steps similar to the above, adjust the added metal ion salt concentration (such as Fe(NO 3 ) 3 9H 2 O or Fe 2 (SO 4 ) 3 or Cu(NO 3 ) 3 ·3H 2 O or CuCl 2 or CuSO 4 ), obtaining the mass fraction is 0,6wt%, 8wt%, 10wt%, 12wt%, 14wt%, 16wt%, 18wt% iron or copper ion doped nano...

Embodiment 2

[0049] On the basis of Example 1, configure dilute sulfuric acid solution according to the volume ratio of concentrated sulfuric acid and deionized water 1:400; add 10g TiOSO in the solution prepared in 400mL 4 , after mixing evenly, add 30g of urea in several times with constant stirring, and then add a certain amount of Fe(NO 3 ) 3 9H 2 O and Cu(NO 3 ) 2 ·3H 2 O (the sum of the theoretical doping amount of iron and copper is controlled to be 4wt%, 6wt%, 8wt%, 10wt%, 12wt%, 14wt%, 16wt%, 18wt%), after the mixed solution was stirred at a constant temperature at 95°C for 8h, Naturally cool to room temperature. The resulting precipitate was washed with deionized water, filtered three times, and dried in a vacuum oven at 60°C for 24 hours. Grinding the obtained dry powder can obtain different mass fractions of iron-copper co-doped nano-titanium dioxide (marked as Fe x -Cu y -TiO 2 ; where x, y are Fe 3+ 、Cu 2+ Doping molar ratio).

Embodiment 3

[0051] In this embodiment, on the basis of Example 2, the total amount of doping is kept constant (that is to say that the total mass of iron ions and copper ions in the solution is constant) (such as 0wt%, 4wt%, 8wt%, 10wt%, 14wt%) %, 18wt%), adjust Fe 3+ 、Cu 2+ The ion doping ratio is 1:2, 1:1, 2:1, 3:1 (that is, Fe 3+ 、Cu 2+ The molar ratio of), can obtain the nano-titanium dioxide of different metal doping ratio, denoted as: Fe1-Cu2-TiO 2 ,Fe1-Cu1-TiO 2 ,Fe2-Cu1-TiO 2 ,Fe3-Cu1-TiO 2 . For example, prepare dilute sulfuric acid solution according to the volume ratio of concentrated sulfuric acid and deionized water 1:400; add 10g TiOSO to 400mL prepared solution 4 , after mixing evenly, add 30g of urea in several times with continuous stirring, and then add 56ml of 0.1mol / l Fe(NO 3 ) 3 9H 2 O, 28ml 0.1mol / l Cu(NO 3 ) 2 ·3H 2 O solution. The mixture was stirred at constant temperature at 95°C for 8 h, and then cooled to room temperature naturally. The resulting...

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Abstract

The invention relates to a decontamination agent, its preparation method and application. The decontamination agent is a suspension of metal co-doped nano-titanium dioxide, wherein the metal in the metal-co-doped nano-titanium dioxide includes at least one of Fe and Cu, and the solvent is hydrofluoroether. The invention also provides a method for preparing metal co-doped nano-titanium dioxide. The raw materials are easy to obtain, the conditions are mild, and the performance of the prepared product is stable, which is beneficial to industrial production. The obtained metal co-doped nano-titanium dioxide has good photocatalytic properties and is used to prepare decontamination agents. The decontamination agents have good digestion efficiency for poisons, and have high efficiency, wide applicability, fast response and environmental friendliness. And the advantages of low corrosion to the environment.

Description

technical field [0001] The invention relates to a decontamination agent for metal co-doped nano-titanium dioxide suspension and its preparation method and application, belonging to the technical field of decontamination agents. Background technique [0002] Decontamination is an agent used to achieve the safety of a person, object or area by absorbing, destroying, neutralizing, detoxifying or removing a biochemical agent. [0003] The inspection and quarantine department is the first line of defense stationed at the border ports to prevent foreign terrorists from carrying out nuclear, biological and chemical terrorist activities against our country. With the rapid development of science and technology, more and more sensitive equipment such as electronics, optics, audio and video, and communications at ports Due to the high price, precise structure and powerful functions of this kind of equipment, it is greatly affected by temperature and humidity, and is not resistant to co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J23/72B01J31/38B01D53/86B01D53/70A62D3/17
CPCA62D3/17B01D53/8662B01J23/72B01J23/745B01J31/38B01J35/39Y02C20/30
Inventor 慈颖王思王静张晓龙于珊珊黄卓人
Owner CHINESE ACAD OF INSPECTION & QUARANTINE