阅读说明：本技术 用于pm2.5的石墨烯复合抗菌净化材料及其制备方法 (Graphene composite antibacterial purification material for PM2.5 and preparation method thereof ) 是由 孙佳惟 孙云飞 阙妙玲 陈丽香 李涛 吴靖 于 2021-08-09 设计创作，主要内容包括：本发明涉及一种用于PM2.5的石墨烯复合抗菌净化材料,由以下重量份的原料制备而成：石墨烯20-50份；木质素10-15份；椰壳活性炭40-60份；纳米二氧化钛2-8份；甲基纤维素0.5-3份；滑石粉0.5-3份；去离子水400-600份。本发明还涉及该用于PM2.5的石墨烯复合抗菌净化材料的制备方法,通过制备本发明配方的复合净化材料,能在保证充分过滤PM2.5的同时去除其他有害空气或水污染物。(The invention relates to a graphene composite antibacterial purification material for PM2.5, which is prepared from the following raw materials in parts by weight: 20-50 parts of graphene; 10-15 parts of lignin; 40-60 parts of coconut shell activated carbon; 2-8 parts of nano titanium dioxide; 0.5-3 parts of methyl cellulose; 0.5-3 parts of talcum powder; 400 portions of deionized water and 600 portions. The invention also relates to a preparation method of the graphene composite antibacterial purification material for PM2.5, and the composite purification material prepared by the formula can remove other harmful air or water pollutants while ensuring that the PM2.5 is fully filtered.)

1. The utility model provides a compound antibiotic purifying material of graphite alkene for PM2.5 which characterized in that: the feed is prepared from the following raw materials in parts by weight: 20-50 parts of graphene; 10-15 parts of lignin; 40-60 parts of coconut shell activated carbon; 2-8 parts of nano titanium dioxide; 0.5-3 parts of methyl cellulose; 0.5-3 parts of talcum powder; 400 portions of deionized water and 600 portions.

2. The graphene composite antibacterial purification material for PM2.5 as claimed in claim 1, wherein: the feed also comprises the following raw materials in parts by weight: 15-85 parts of nano iron; 0.5-3 parts of nano silver.

3. The graphene composite antibacterial purification material for PM2.5 as claimed in claim 1, wherein: also comprises 0.5-3 parts of odor additive.

4. The graphene composite antibacterial purification material for PM2.5 as claimed in claim 3, wherein: the odor additive is at least one of ginkgetin, seabuckthorn flavone, broadleaf holly leaf flavone, perilla oil and elsholtzia volatile oil.

5. The graphene composite antibacterial purification material for PM2.5 as claimed in claim 1, wherein: the weight ratio of the raw materials is as follows: 45 parts of graphene; 12 parts of lignin; 40 parts of coconut shell activated carbon; 6 parts of nano titanium dioxide; 2.5 parts of methyl cellulose; 2 parts of talcum powder; 500 parts of deionized water.

6. A preparation method of a graphene composite antibacterial purification material for PM2.5 is characterized by comprising the following steps: the method comprises the following steps:

1) sequentially adding coconut shell activated carbon, lignin, nano titanium dioxide, methyl cellulose and talcum powder into a stirrer, stirring and uniformly mixing to prepare a mixture;

2) drying and naturally cooling the mixture to room temperature, and grinding the cooled mixture to obtain pretreatment powder;

3) placing graphene in deionized water to form a suspension, and carrying out ultrasonic treatment on the suspension;

4) and (3) mixing the suspension subjected to ultrasonic treatment in the step 3) with the pretreatment powder in the step 1), and roasting to obtain the graphene composite purification material.

7. The method for preparing the graphene composite antibacterial purification material for PM2.5 according to claim 6, wherein the graphene composite antibacterial purification material comprises the following steps: and 4) uniformly spraying the suspension on the pretreatment powder.

8. The method for preparing the graphene composite antibacterial purification material for PM2.5 according to claim 6, wherein the graphene composite antibacterial purification material comprises the following steps: the ultrasonic treatment time in the step 3) is 20-60 min.

9. The method for preparing the graphene composite antibacterial purification material for PM2.5 according to claim 6, wherein the graphene composite antibacterial purification material comprises the following steps: the coconut shell activated carbon in the step 1) is ground into carbon powder with the mesh number of 500 in advance.

10. The method for preparing the graphene composite antibacterial purification material for PM2.5 according to claim 6, wherein the graphene composite antibacterial purification material comprises the following steps: and 4) putting the mixed suspension and the pretreatment powder into a furnace at 1200 ℃ in the step 4), and roasting for 60 min.

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of air and water purification, in particular to a graphene composite antibacterial purification material for PM2.5 and a preparation method thereof.

[ background of the invention ]

PM2.5 is fine particles, which means particles with an aerodynamic equivalent diameter of less than or equal to 2.5 microns in ambient air. It can be suspended in air for a long time, and the higher the content concentration in the air, the more serious the air pollution is. Although PM2.5 is only a component of earth's atmospheric composition in small amounts, it has a significant effect on air quality and visibility, among other things. Compared with the thicker atmospheric particulate matters, the PM2.5 has small particle size, large area, strong activity, easy attachment of toxic and harmful substances (such as heavy metals, microorganisms and the like), long retention time in the atmosphere and long conveying distance, thereby having larger influence on human health and atmospheric environmental quality.

The common PM2.5 purifying material can only filter PM2.5 pollutants and does not have the function of simultaneously cleaning other harmful components in the air.

Accordingly, there is a need for improvements in the art that overcome the deficiencies in the prior art.

[ summary of the invention ]

Aiming at the defects of the prior art, the invention aims to provide a graphene composite antibacterial purification material for PM2.5, which is prepared from the following raw materials in parts by weight: 20-50 parts of graphene; 10-15 parts of lignin; 40-60 parts of coconut shell activated carbon; 2-8 parts of nano titanium dioxide; 0.5-3 parts of methyl cellulose; 0.5-3 parts of talcum powder; 400 portions of deionized water and 600 portions.

Preferably, the feed also comprises the following raw materials in parts by weight: 15-85 parts of nano iron; 0.5-3 parts of nano silver.

Preferably, 0.5-3 parts of odor additive is also included.

Preferably, the odor additive is at least one of ginkgetin, seabuckthorn flavone, formosan lattuce herb flavone, perilla herb oil and elsholtzia volatile oil.

Preferably, the weight ratio of the raw materials is as follows: 45 parts of graphene; 12 parts of lignin; 40 parts of coconut shell activated carbon; 6 parts of nano titanium dioxide; 2.5 parts of methyl cellulose; 2 parts of talcum powder; 500 parts of deionized water.

The invention also relates to a preparation method of the graphene composite antibacterial purification material for PM2.5, which comprises the following steps:

1) sequentially adding coconut shell activated carbon, lignin, nano titanium dioxide, methyl cellulose and talcum powder into a stirrer, stirring and uniformly mixing to prepare a mixture;

2) drying and naturally cooling the mixture to room temperature, and grinding the cooled mixture to obtain pretreatment powder;

3) placing graphene in deionized water to form a suspension, and carrying out ultrasonic treatment on the suspension;

4) and (3) mixing the suspension subjected to ultrasonic treatment in the step 3) with the pretreatment powder in the step 1), and roasting to obtain the graphene composite purification material.

Preferably, the suspension is sprayed uniformly onto the pretreated powder in step 4).

Preferably, the time of the ultrasonic treatment in the step 3) is 20-60 min.

Preferably, the coconut shell activated carbon in the step 1) is ground into carbon powder with 500 meshes in advance.

Preferably, the mixed suspension and the pre-treatment powder in the step 4) are put into a furnace at 1200 ℃ and roasted for 60 min.

Compared with the prior art, the invention has the beneficial effects that:

the invention relates to a graphene composite antibacterial purification material for PM2.5, which is prepared from the following raw materials in parts by weight: 20-50 parts of graphene; 10-15 parts of lignin; 40-60 parts of coconut shell activated carbon; 2-8 parts of nano titanium dioxide; 0.5-3 parts of methyl cellulose; 0.5-3 parts of talcum powder; 400 portions of deionized water and 600 portions. The invention also relates to a preparation method of the graphene composite antibacterial purification material for PM2.5, and the composite purification material prepared by the formula can remove other harmful air or water pollutants while ensuring that the PM2.5 is fully filtered.

The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a detailed description of the preferred embodiments of the present invention. Specific embodiments of the present invention are given in detail by the following examples.

[ detailed description ] embodiments

The present invention will be further described with reference to specific embodiments, and it should be noted that any combination of the embodiments or technical features described below can form a new embodiment without conflict. It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

A graphene composite antibacterial purification material for PM2.5 is prepared from the following raw materials in parts by weight: 20-50 parts of graphene; 10-15 parts of lignin; 40-60 parts of coconut shell activated carbon; 2-8 parts of nano titanium dioxide; 0.5-3 parts of methyl cellulose; 0.5-3 parts of talcum powder; 400 portions of deionized water and 600 portions.

Further, the feed also comprises the following raw materials in parts by weight: 15-85 parts of nano iron; 0.5-3 parts of nano silver; so as to attach iron ions and anions on the graphene and enhance the bacteriostatic action of the sterilizing box of the purifying material.

Further, 0.5-3 parts of odor additive is also included; so as to improve the smell of the purifying material and improve the user experience. In some embodiments, the odor additive is at least one of ginkgetin, hippophae rhamnoides flavone, formosan lattuce herb flavone, perilla oil, and elsholtzia volatile oil. It will be appreciated that other odour improving substances may also be added to improve the taste of the purification material.

The invention also relates to a preparation method of the graphene composite antibacterial purification material for PM2.5, which comprises the following steps: after the raw materials in the weight portion are weighed,

1) sequentially adding coconut shell activated carbon, lignin, nano titanium dioxide, methyl cellulose and talcum powder into a stirrer, stirring and uniformly mixing to prepare a mixture;

2) drying and naturally cooling the mixture to room temperature, and grinding the cooled mixture to obtain pretreatment powder;

3) placing graphene in deionized water to form a suspension, and carrying out ultrasonic treatment on the suspension;

4) and (3) mixing the suspension subjected to ultrasonic treatment in the step 3) with the pretreatment powder in the step 1), and roasting to obtain the graphene composite purification material.

In some embodiments, the suspension is uniformly sprayed on the pretreated powder in the step 4) to ensure that the suspension and the pretreated powder are uniformly mixed, so that the quality of the final product is improved.

In some embodiments, the time of the ultrasonic treatment in step 3) is 20-60min to ensure that the graphene is uniformly dispersed in the deionized water, thereby improving the quality of the final product.

In some embodiments, the coconut shell activated carbon in step 1) is ground into carbon powder with 500 meshes in advance, so that the carbon powder is fully mixed with other raw materials, and the quality of a final product is improved.

In some embodiments, the mixed suspension and the pre-treatment powder in step 4) are placed in a furnace at 800-1800 ℃ and calcined for 60 min.

Example one

A preparation method of a graphene composite antibacterial purification material for PM2.5 comprises the following steps: weighing 20 parts of graphene; 10 parts of lignin; 40 parts of coconut shell activated carbon; 2 parts of nano titanium dioxide; 0.5 part of methyl cellulose; 0.5 part of talcum powder; 400 parts of deionized water, namely 400 parts of deionized water,

1) sequentially adding 40 parts of coconut shell activated carbon, 2 parts of nano titanium dioxide, 0.5 part of methyl cellulose and 0.5 part of talcum powder into a stirrer, stirring and uniformly mixing to prepare a mixture;

2) drying and naturally cooling the mixture to room temperature, and grinding the cooled mixture to obtain pretreatment powder;

3) placing 20 parts of graphene in 400 parts of deionized water to form a suspension, and carrying out ultrasonic treatment on the suspension for 30 min;

4) and (3) mixing the suspension subjected to ultrasonic treatment in the step 3) with the pretreatment powder in the step 1), and roasting to obtain the graphene composite purification material.

Example two

A preparation method of a graphene composite antibacterial purification material for PM2.5 comprises the following steps: weighing 50 parts of graphene; 10 parts of lignin; 60 parts of coconut shell activated carbon; 8 parts of nano titanium dioxide; 3 parts of methyl cellulose; 3 parts of talcum powder; 600 parts of deionized water, namely,

1) sequentially adding 60 parts of coconut shell activated carbon, 8 parts of nano titanium dioxide, 3 parts of methyl cellulose and 3 parts of talcum powder into a stirrer, and stirring and uniformly mixing to prepare a mixture;

2) drying and naturally cooling the mixture to room temperature, and grinding the cooled mixture to obtain pretreatment powder;

3) 50 parts of graphene is placed in 600 parts of deionized water to form a suspension, and the suspension is subjected to ultrasonic treatment for 30 min;

4) and (3) mixing the suspension subjected to ultrasonic treatment in the step 3) with the pretreatment powder in the step 1), and roasting to obtain the graphene composite purification material.

EXAMPLE III

A preparation method of a graphene composite antibacterial purification material for PM2.5 comprises the following steps: weighing 35 parts of graphene; 10 parts of lignin; 50 parts of coconut shell activated carbon; 5 parts of nano titanium dioxide; 1.8 parts of methyl cellulose; 1.8 parts of talcum powder; 500 parts of deionized water;

1) sequentially adding 50 parts of coconut shell activated carbon, 5 parts of nano titanium dioxide, 1.8 parts of methyl cellulose and 1.8 parts of talcum powder into a stirrer, and stirring and uniformly mixing to prepare a mixture;

2) drying and naturally cooling the mixture to room temperature, and grinding the cooled mixture to obtain pretreatment powder;

3) placing 35 parts of graphene in 500 parts of deionized water to form a suspension, and carrying out ultrasonic treatment on the suspension for 30 min;

4) and (3) mixing the suspension subjected to ultrasonic treatment in the step 3) with the pretreatment powder in the step 1), and roasting to obtain the graphene composite purification material.

Comparative example 1

A preparation method of a graphene composite antibacterial purification material for PM2.5 comprises the following steps: weighing 45 parts of graphene; 12 parts of lignin; 40 parts of coconut shell activated carbon; 6 parts of nano titanium dioxide; 2.5 parts of methyl cellulose; 2 parts of talcum powder; 500 parts of deionized water;

1) sequentially adding 40 parts of coconut shell activated carbon, 6 parts of nano titanium dioxide, 2.5 parts of methyl cellulose and 2 parts of talcum powder into a stirrer, stirring and uniformly mixing to prepare a mixture;

2) drying and naturally cooling the mixture to room temperature, and grinding the cooled mixture to obtain pretreatment powder;

3) putting 45 parts of graphene into 500 parts of deionized water to form a suspension, and carrying out ultrasonic treatment on the suspension for 30 min;

4) and (3) mixing the suspension subjected to ultrasonic treatment in the step 3) with the pretreatment powder in the step 1), and roasting to obtain the graphene composite purification material.

Comparative example No. two

A preparation method of a graphene composite antibacterial purification material for PM2.5 comprises the following steps: weighing 20 parts of graphene; 10 parts of lignin; 40 parts of coconut shell activated carbon; 2 parts of nano titanium dioxide; 0.5 part of methyl cellulose; 0.5 part of talcum powder; 400 parts of deionized water; 50 parts of nano iron; 2 parts of nano silver;

1) sequentially adding 40 parts of coconut shell activated carbon, 2 parts of nano titanium dioxide, 50 parts of nano iron, 2 parts of nano silver, 0.5 part of methyl cellulose and 0.5 part of talcum powder into a stirrer, stirring and uniformly mixing to prepare a mixture;

2) drying and naturally cooling the mixture to room temperature, and grinding the cooled mixture to obtain pretreatment powder;

3) placing 20 parts of graphene in 400 parts of deionized water to form a suspension, and carrying out ultrasonic treatment on the suspension for 30 min;

4) and (3) mixing the suspension subjected to ultrasonic treatment in the step 3) with the pretreatment powder in the step 1), and roasting to obtain the graphene composite purification material.

Comparative example No. three

A preparation method of a graphene composite antibacterial purification material for PM2.5 comprises the following steps: weighing 20 parts of graphene; 10 parts of lignin; 40 parts of coconut shell activated carbon; 2 parts of nano titanium dioxide; 0.5 part of methyl cellulose; 0.5 part of talcum powder; 400 parts of deionized water, namely 400 parts of deionized water,

1) sequentially adding 40 parts of coconut shell activated carbon, 2 parts of nano titanium dioxide, 0.5 part of methyl cellulose and 0.5 part of talcum powder into a stirrer, stirring and uniformly mixing to prepare a mixture;

2) drying and naturally cooling the mixture to room temperature, and grinding the cooled mixture to obtain pretreatment powder;

3) placing 20 parts of graphene in 400 parts of deionized water to form a suspension, and carrying out ultrasonic treatment on the suspension for 10 min;

4) and (3) mixing the suspension subjected to ultrasonic treatment in the step 3) with the pretreatment powder in the step 1), and roasting to obtain the graphene composite purification material.

Comparative example No. four

A preparation method of a graphene composite antibacterial purification material for PM2.5 comprises the following steps: weighing 20 parts of graphene; 10 parts of lignin; 40 parts of coconut shell activated carbon; 2 parts of nano titanium dioxide; 0.5 part of methyl cellulose; 0.5 part of talcum powder; 400 parts of deionized water, namely 400 parts of deionized water,

1) grinding 40 parts of coconut shell activated carbon into carbon powder with 500 meshes, 2 parts of nano titanium dioxide, 0.5 part of methyl cellulose and 0.5 part of talcum powder, sequentially adding the carbon powder, the nano titanium dioxide, the methyl cellulose and the talcum powder into a stirrer, and stirring and uniformly mixing to prepare a mixture;

2) drying and naturally cooling the mixture to room temperature, and grinding the cooled mixture to obtain pretreatment powder;

3) placing 20 parts of graphene in 400 parts of deionized water to form a suspension, and carrying out ultrasonic treatment on the suspension for 30 min;

4) and (3) mixing the suspension subjected to ultrasonic treatment in the step 3) with the pretreatment powder in the step 1), and roasting to obtain the graphene composite purification material.

Comparative example five

A preparation method of a graphene composite antibacterial purification material for PM2.5 comprises the following steps: weighing 20 parts of graphene; 10 parts of lignin; 40 parts of coconut shell activated carbon; 2 parts of nano titanium dioxide; 0.5 part of methyl cellulose; 0.5 part of talcum powder; 400 parts of deionized water, namely 400 parts of deionized water,

1) sequentially adding 40 parts of coconut shell activated carbon, 2 parts of nano titanium dioxide, 0.5 part of methyl cellulose and 0.5 part of talcum powder into a stirrer, stirring and uniformly mixing to prepare a mixture;

2) drying and naturally cooling the mixture to room temperature, and grinding the cooled mixture to obtain pretreatment powder;

3) placing 20 parts of graphene in 400 parts of deionized water to form a suspension, and carrying out ultrasonic treatment on the suspension for 30 min;

4) mixing the suspension subjected to ultrasonic treatment in the step 3) and the pretreatment powder in the step 1), putting the mixture into a furnace at 1200 ℃, and roasting for 60min to obtain the final purification material.

Comparative example six

A preparation method of a graphene composite antibacterial purification material for PM2.5 comprises the following steps: weighing 40 parts of coconut shell activated carbon; 2 parts of nano titanium dioxide; 0.5 part of methyl cellulose; 0.5 part of talcum powder; 400 parts of deionized water, namely 400 parts of deionized water,

1) sequentially adding 40 parts of coconut shell activated carbon, 2 parts of nano titanium dioxide, 0.5 part of methyl cellulose and 0.5 part of talcum powder into a stirrer, stirring and uniformly mixing to prepare a mixture;

2) drying and naturally cooling the mixture to room temperature, and grinding the cooled mixture to obtain pretreatment powder;

3) placing 20 parts of graphene in 400 parts of deionized water to form a suspension, and carrying out ultrasonic treatment on the suspension for 30 min;

4) mixing the suspension subjected to ultrasonic treatment in the step 3) and the pretreatment powder in the step 1), putting the mixture into a furnace at 1200 ℃, and roasting for 60min to obtain the final purification material.

Carrying out related performance tests on the graphene composite antibacterial purification materials for PM2.5 prepared in the first to third embodiments and the first to sixth embodiments, and enabling polluted air with PM2.5 of 500 to pass through the air purification materials at a speed of 1 m/s; the number of days until good purification efficiency could not be maintained after purifying the purification material of the present invention in a high concentration of a polluted gas having a concentration of 30% or more (much higher than the normal case of pollution) continuously for N days was counted as the life. The test results are shown in the following table:

as shown in the above table, it can be seen from examples one to three and comparative example one that the purification material composition of comparative example discloses in parts by weight has better filtration rate, formaldehyde purification efficiency and benzene purification rate; as can be seen from the first to third examples and the second comparative example, the overall antibacterial efficiency of the purification material can be improved after the nano silver and the nano iron are added; as can be seen from the first to third examples and the third comparative example, when the graphene is not uniformly dispersed in water, the PM2.5 filtration rate, the formaldehyde purification rate, and the benzene purification rate of the final purification material are affected; as can be seen from the first to third examples and the fourth comparative example, 40 parts of coconut shell activated carbon is ground into carbon powder with 500 meshes and then mixed with other components, so that the filtration rate and the purification efficiency of the purification material can be improved; as can be seen from the first to third examples and the fifth comparative example, the filtration rate and the purification efficiency of the purification material can be improved by selecting proper roasting temperature and roasting time; as can be seen from examples one to three and comparative example six, the purification material of the present invention has a good service life.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.