阅读说明：本技术 一种Ce2S3/TiO2红色色粉及其制备方法和应用 (Ce2S3/TiO2Red toner and preparation method and application thereof ) 是由 王梁炳 杨永福 徐佶粱 于 2021-08-13 设计创作，主要内容包括：本发明提供了一种Ce-(2)S-(3)/TiO-(2)红色色粉及其制备方法和应用,所述Ce-(2)S-(3)/TiO-(2)红色色粉是通过往氧化钛溶液中以稳定的速度分别缓慢加入可溶性铈盐溶液和可溶性硫化物溶液,加热搅拌反应,过滤烘干后再与硫氰酸铵混合煅烧即得。本发明的红色色粉用于室内装修时,既具有美化装修效果,又具有优异的挥发性有机气体降解效果,兼顾外观与功能性。(The invention provides Ce 2 S 3 /TiO 2 Red toner, preparation method and application thereof, and Ce 2 S 3 /TiO 2 The red toner is prepared by respectively and slowly adding soluble cerium salt solution and soluble sulfide solution into titanium oxide solution at a stable speed, heating, stirring, reacting, filtering, drying, mixing with ammonium thiocyanate, and calcining. The red toner is used for indoor decorationThe decoration effect is beautified, the degradation effect of volatile organic gases is excellent, and both the appearance and the functionality are considered.)

1. Ce₂S₃/TiO₂The preparation method of the red toner is characterized in that: and (3) slowly adding a soluble cerium salt solution and a soluble sulfide solution into the titanium oxide solution at a stable speed respectively, heating, stirring, reacting, filtering, drying, mixing with ammonium thiocyanate, and calcining to obtain the titanium oxide.

2. Ce according to claim 1₂S₃/TiO₂The preparation method of the red toner is characterized in that: the concentration of the titanium oxide solution is 10-100 mg/mL.

3. Ce according to claim 1₂S₃/TiO₂The preparation method of the red toner is characterized in that: the soluble cerium salt is one or more of sulfate, oxalate, nitrate and chloride of cerium; the soluble sulfide is composed of one or more of sodium sulfide, calcium sulfide, potassium sulfide and magnesium sulfide.

4. Ce according to claim 1₂S₃/TiO₂The preparation method of the red toner is characterized in that: the concentration of the soluble cerium salt solution is 200-500 mg/mL; the concentration of the soluble sulfide solution is 10-100mg/mL, and the molar ratio of the soluble cerium salt to the soluble sulfide is 1: 0.1-0.5.

5. According to claim 1The above-mentioned Ce₂S₃/TiO₂The preparation method of the red toner is characterized in that: the injection rates of the soluble cerium salt solution and the soluble sulfide solution are both 0.2mL/min-1 mL/min.

6. Ce according to claim 1₂S₃/TiO₂The preparation method of the red toner is characterized in that: the temperature for heating and stirring reaction is 60-90 ℃ and the time is 1-6 h.

7. Ce according to claim 1₂S₃/TiO₂The preparation method of the red toner is characterized in that: the dosage of the ammonium thiocyanate is as follows: the mol ratio of the soluble cerium salt to the ammonium thiocyanate is 1: 1-1.5.

8. Ce according to claim 1₂S₃/TiO₂The preparation method of the red toner is characterized in that: the calcination temperature is 800-1000 ℃, and the calcination time is 2-4 hours.

9. Ce obtained by the method of any one of claims 1 to 8₂S₃/TiO₂A red toner.

10. Ce as claimed in claim 9₂S₃/TiO₂The application of the red toner is characterized in that: it is used for degrading indoor volatile organic gas.

Technical Field

The invention belongs to the technical field of interior decoration and environmental protection, and relates to Ce₂S₃/TiO₂A red toner, a preparation method thereof and application thereof in degrading indoor volatile organic gases.

Background

With the continuous growth of global population and the continuous development of industry, the atmospheric environmental pollution is increasingly serious. Among them, the volatile organic compounds, which are composed of aldehyde compounds mainly including formaldehyde and acetaldehyde, benzene compounds, and the like, are considered as the most typical air pollutants because they are generally present in indoor environments and pose great threats to the health and safety of human bodies.

Volatile organic compounds are produced through various routes such as fossil fuel processing, industrial and agricultural production, and automobile exhaust emission, and the presence of volatile organic compounds in indoor and outdoor environments causes a serious health problem such as cancer, respiratory diseases, liver diseases, and skin diseases. According to the statistics of environmental protection institutions, recently, the toxicity of indoor air quality is 2-5 times that of outdoor air, and a series of health problems including nose, throat and eye irritation can be caused by long-time stay indoors. Therefore, the degradation of volatile organic compounds in indoor environment is an important guarantee for the health and safety of people in indoor environment for a long time.

At present, most products aiming at the degradation of volatile organic compounds in the market are in the form of spray, and although the products in the form can play a certain role in the degradation of the volatile organic compounds, the liquid form of the products determines that the products cannot be well used under many conditions, so that the degradation efficiency is low when the products are used indoors. Therefore, changing the use form of the degradation agent to be better applied to indoor environment is a problem to be solved.

Disclosure of Invention

In order to solve the technical problems of single form and low efficiency of the existing volatile organic compound degradation product when used indoors, the invention aims to provide a Ce-doped barium titanate material₂S₃/TiO₂The red toner has a beautifying and decorating effect and an excellent volatile organic gas degradation effect when being used for indoor decoration, and has both appearance and functionality.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

ce₂S₃/TiO₂The preparation method of the red toner comprises the steps of respectively and slowly adding a soluble cerium salt solution and a soluble sulfide solution into a titanium oxide solution at a stable speed, heating, stirring, reacting, filtering, drying, mixing with ammonium thiocyanate and calcining to obtain the red toner.

Preferably, the concentration of the titanium oxide solution is 10-100 mg/mL.

Preferably, the soluble cerium salt is one or more of sulfate, oxalate, nitrate and chloride of cerium; the soluble sulfide is composed of one or more of sodium sulfide, calcium sulfide, potassium sulfide and magnesium sulfide.

Preferably, the concentration of the soluble cerium salt solution is 200-500 mg/mL; the concentration of the soluble sulfide solution is 10-100mg/mL, and the molar ratio of the soluble cerium salt to the soluble sulfide is 1: 0.1-0.5.

Preferably, the injection rates of the soluble cerium salt solution and the soluble sulfide solution are both 0.2mL/min to 1 mL/min.

Preferably, the temperature for heating and stirring reaction is 60-90 ℃ and the time is 1-6 h.

Preferably, the amount of the ammonium thiocyanate is as follows: the mol ratio of the soluble cerium salt to the ammonium thiocyanate is 1: 1-1.5.

Preferably, the calcination temperature is 800-1000 ℃ and the calcination time is 2-4 hours.

The invention also provides Ce prepared by the preparation method₂S₃/TiO₂A red toner.

The invention also provides the Ce₂S₃/TiO₂The application of red toner in degrading volatile organic gas in room.

The invention has the advantages that:

(1) ce of the invention₂S₃/TiO₂The red toner has beautifying and decorating effects and excellent volatile organic gas degradation effects when used for indoor decoration, and has both appearance and functionality;

(2) ce of the invention₂S₃/TiO₂Red toner, low cost and its preparation methodSimple, the color of the product prepared each time is stable without color difference, and the product can be prepared in large batch.

Drawings

FIG. 1 shows Ce obtained in example 1 of the present invention₂S₃/TiO₂Appearance of red toner sample (left panel), comparative sample 1 made in comparative example 1 (middle panel), comparative sample 2 made in comparative example 2 (right panel).

FIG. 2 shows Ce obtained in example 1 of the present invention₂S₃/TiO₂XRD pattern of red toner.

FIG. 3 is a graph showing the formaldehyde degradation efficiency of the samples obtained in examples 1 to 3 of the present invention, comparative example 1 and comparative example 2.

FIG. 4 is a graph showing acetaldehyde degradation efficiency of samples prepared in examples 1 to 3 of the present invention, comparative example 1 and comparative example 2.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be noted that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. In practice, the technical personnel according to the invention make improvements and modifications, which still belong to the protection scope of the invention.

The experimental procedure for formaldehyde degradation was:

20mg of the prepared toner was charged into a reactor, and about 1mg/m was introduced thereinto after the reactor was closed³The formaldehyde gas is illuminated by natural light, and the formaldehyde content of the formaldehyde gas is detected at intervals.

The experimental steps for acetaldehyde degradation were:

20mg of the prepared toner was charged into a reactor, about 400ppm of acetaldehyde gas was introduced thereinto after the reactor was closed, and the acetaldehyde content was measured at intervals after the reactor was lighted with a xenon lamp.

Example 1

(1) 8.46g of commercial P25TiO₂The powder is dissolved in 400mL deionized water to prepare TiO₂And (4) a base solution.

(2) 4.34g of Ce (NO)₃)₃·6H₂O dissolved in 40mLH₂Preparing cerium salt solution by using O; 480.36mg of Na₂S·9H₂O is dissolved in 40mLH₂And preparing the O into sulfide solution.

(3) 20mL of the cerium salt solution and the sulfide solution were respectively charged into syringes, injected into the base solution at a rate of 0.3mL/min using syringe pumps, and placed in an environment of 80 ℃ with stirring for 2 hours.

(4) After centrifugal washing, it was dried at 100 ℃, ground, mixed with 470mg of ammonium thiocyanate and calcined in a tube furnace at 850 ℃ for 2 hours.

(5) The obtained powder was washed with absolute ethanol, and the product obtained after drying and grinding was designated as product 1, and the physical diagram is shown in fig. 1 (left panel).

Example 2

(1) 8.46g of commercial P25TiO₂The powder is dissolved in 400mL deionized water to prepare TiO₂And (4) a base solution.

(2) 4.34g of Ce (NO)₃)₃·6H₂O dissolved in 40mLH₂Preparing cerium salt solution by using O; 480.36mg of Na₂S·9H₂O dissolved in 40mLH₂And preparing the O into sulfide solution.

(3) 20mL of the cerium salt solution and the sulfide solution were respectively charged into syringes, injected into the base solution at a rate of 0.5mL/min using syringe pumps, and placed in an environment of 80 ℃ with stirring for 2 hours.

(4) After centrifugal washing, it was dried at 100 ℃, ground, mixed with 470mg of ammonium thiocyanate and calcined in a tube furnace at 850 ℃ for 2 hours.

(5) The obtained powder was washed with absolute ethanol, dried and ground to obtain a product which was designated as product 2.

Example 3

(1) 8.46g of commercial P25TiO₂The powder is dissolved in 400mL deionized water to prepare TiO₂And (4) a base solution.

(2) 4.34g of Ce (NO)₃)₃·6H₂O dissolved in 40mLH₂Preparing cerium salt solution by using O; 480.36mg of Na₂S·9H₂O dissolved in 40mLH₂And preparing the O into sulfide solution.

(3) 20mL of the cerium salt solution and the sulfide solution were respectively charged into syringes, injected into the base solution at a rate of 0.8mL/min using syringe pumps, and placed in an environment of 80 ℃ with stirring for 2 hours.

(4) After centrifugal washing, it was dried at 100 ℃, ground, mixed with 470mg of ammonium thiocyanate and calcined in a tube furnace at 850 ℃ for 2 hours.

(5) The obtained powder was washed with absolute ethanol, dried and ground to obtain a product which was designated as product 3.

Comparative example 1

(1) 8.46g of commercial P25TiO₂The powder is dissolved in 400mL deionized water to prepare TiO₂And (4) a base solution.

(2) 4.34g of Ce (NO)₃)₃·6H₂O dissolved in 40mLH₂Preparing cerium salt solution by using O; 480.36mg of Na₂S·9H₂O dissolved in 40mLH₂And preparing the O into sulfide solution.

(3) 20mL of the cerium salt solution and the sulfide solution were directly poured into the base solution, and the mixture was stirred at 80 ℃ for 2 hours.

(4) After centrifugal washing, it was dried at 100 ℃, ground, mixed with 470mg of ammonium thiocyanate and calcined in a tube furnace at 850 ℃ for 2 hours.

(5) The powder obtained was washed with absolute ethanol and dried and ground to give a product which was designated comparative product 1 (see fig. 1 for a physical representation (middle panel)).

Comparative example 2

Adding Ce₂S₃Powder and commercial P25TiO₂The product obtained by mixing the powders directly is designated as comparative product 2, and the physical representation is shown in FIG. 1 (right).

As shown in fig. 1. It can be seen that the product 1 prepared by example 1 of the present invention is much more vivid in color than the comparative sample 1 prepared by directly pouring the cerium salt solution and the sulfide solution into the base solution and the comparative sample 2 obtained by directly physically mixing them.

As shown in FIGS. 3 and 4, it can be seen from the experimental results of formaldehyde degradation and acetaldehyde degradation that Ce prepared by the present invention₂S₃/TiO₂The degradation performance of the red toner is far stronger than that of a pair obtained by directly adding the red toner into the base solution without controlling the adding speed of the soluble cerium salt solution and the soluble sulfide solutionProduct 1 and Ce₂S₃Direct powder to commercial P25TiO₂Comparative product 2 obtained by mixing powders, and the inventors found that the rates of addition of the soluble cerium salt solution and the soluble sulfide solution to the titanium oxide base solution were different for the obtained Ce₂S₃/TiO₂The degradation performance of the red toner is also affected. The slower the rate of adding the soluble cerium salt solution and the soluble sulfide solution into the titanium oxide base solution, the more Ce is prepared₂S₃/TiO₂The better the degradation performance of the red toner.