阅读说明：本技术 一种介孔空心碳纳米球空气滤料的制备方法 (Preparation method of mesoporous hollow carbon nanosphere air filter material ) 是由 夏敏 燕青芝 葛昌纯 于 2019-10-10 设计创作，主要内容包括：一种介孔空心碳纳米球空气滤料的制备方法,属于空气净化滤料制备领域。本发明将介孔空心碳纳米球与羧甲基纤维素钠混合后加入去离子水,在搅拌机的搅拌作用下形成配料。配料倒入造粒机中,均匀挤出介孔空心碳纳米球碳柱,在60～180℃之间干燥1～12小时,制得介孔空心碳纳米球空气滤料。其中羧甲基纤维素钠的加入量为空心碳纳米球的5-20wt％；去离子水与混合粉末的体积比为(0.5-1)：1。以羧甲基纤维素钠为粘结剂制备介孔空心碳纳米球碳柱能够大幅度提高吸附效率,有效去除酸性或碱性以及VOC(挥发性有机物)等有害气体,达到净化空气的目的,本发明可用于各种作业场所(例如：服务器机房、新风系统等)的有害气体去除,简单实用,使用寿命长。(A preparation method of a mesoporous hollow carbon nanosphere air filter material belongs to the field of air purification filter material preparation. The mesoporous hollow carbon nanospheres and the sodium carboxymethylcellulose are mixed and then added with deionized water, and ingredients are formed under the stirring action of a stirrer. Pouring the ingredients into a granulator, uniformly extruding mesoporous hollow carbon nanosphere carbon columns, and drying at 60-180 ℃ for 1-12 hours to obtain the mesoporous hollow carbon nanosphere air filter material. Wherein the addition of the sodium carboxymethyl cellulose is 5-20 wt% of the hollow carbon nanospheres; the volume ratio of the deionized water to the mixed powder is (0.5-1): 1. the mesoporous hollow carbon nanosphere carbon column prepared by taking sodium carboxymethylcellulose as a binder can greatly improve the adsorption efficiency, effectively remove harmful gases such as acidity or alkalinity, Volatile Organic Compounds (VOC) and the like, and achieve the purpose of purifying air.)

1. A preparation method of a mesoporous hollow carbon nanosphere air filter material is characterized by comprising the following specific preparation steps:

(1) mixing the mesoporous hollow carbon nanospheres with sodium carboxymethylcellulose according to a certain mass ratio; wherein the addition of the sodium carboxymethyl cellulose is 5-20 wt% of the hollow carbon nanospheres;

(2) adding a certain volume of deionized water into the step (1), wherein the volume ratio of the deionized water to the mixed powder is (0.5-1): 1, obtaining ingredients under the stirring action of a stirrer;

(3) pouring the mixture 1 obtained in the step (2) into a granulator, and uniformly extruding mesoporous hollow carbon nanosphere carbon columns, wherein the diameter of each carbon column is 3-5mm, and the length of each carbon column is 2-4 cm;

(4) and (4) drying the carbon column obtained in the step (3) for 1-12 hours at the temperature of 60-180 ℃ to obtain the mesoporous hollow carbon nanosphere air filter material.

2. The preparation method of the mesoporous hollow carbon nanosphere air filter material as claimed in claim 1, which is characterized in that: in the step (1), the wall thickness of the mesoporous hollow carbon nanosphere is 5-20nm, the inner diameter of the hollow sphere is 5-100nm, the outer diameter of the hollow sphere is 20-200nm, the mesoporous is worm-like and has the diameter of 2-5 nm.

Technical Field

The invention relates to a preparation method of a mesoporous hollow carbon nanosphere air filter material, in particular to a filter material for air purification prepared by mesoporous hollow carbon nanospheres, belonging to the technical field of preparation of air purification filter materials.

Background

At present, the atmospheric pollution is increasingly serious, and the frequent occurrence of haze seriously influences the normal work, study, life and body health of people. The existing air pollution prevention modes adopted by people in life are modes of wearing a mask, putting active carbon indoors and the like. However, the mask can only play a simple filtering role, the pore diameter of most activated carbon is difficult to regulate and control, the pore diameter is single, and most activated carbon is ineffective macropore, so that the service life of most activated carbon is short, and the purification effect is poor. The high specific surface area active carbon has a porous structure, can adsorb organic matters and inorganic matters, has the characteristics of large adsorption capacity and high adsorption speed, is a high-quality and high-efficiency adsorbent, and is widely applied to industries such as environmental protection and the like.

Disclosure of Invention

The invention aims to provide an air filter material which has a mesoporous and hollow structure and can effectively adsorb harmful substances in air.

A preparation method of a mesoporous hollow carbon nanosphere air filter material comprises the following specific preparation steps:

(1) mixing the mesoporous hollow carbon nanospheres with sodium carboxymethylcellulose according to a certain mass ratio; wherein the addition of the sodium carboxymethyl cellulose is 5-20 wt% of the hollow carbon nanospheres;

(2) adding a certain volume of deionized water into the step (1), wherein the volume ratio of the deionized water to the mixed powder is (0.5-1): 1, obtaining a material 1 under the stirring action of a stirrer;

(3) pouring the mixture 1 obtained in the step (2) into a granulator, and uniformly extruding mesoporous hollow carbon nanosphere carbon columns, wherein the diameter of each carbon column is 3-5mm, and the length of each carbon column is 2-4 cm;

(4) and (4) drying the carbon column obtained in the step (3) for 1-12 hours at the temperature of 60-180 ℃ to obtain the mesoporous hollow carbon nanosphere air filter material.

Further, in the step (1), the wall thickness of the mesoporous hollow carbon nanosphere is 5-20nm, the inner diameter of the hollow sphere is 5-100nm, the outer diameter of the hollow sphere is 20-200nm, the mesoporous is worm-like, and the diameter of the mesoporous is 2-5 nm.

The invention has the advantages and positive effects that: the mesoporous hollow carbon nanospheres are used as raw materials, a multilevel pore structure (mesopores on the wall of the sphere and hollow pores in the sphere) of the mesoporous hollow carbon nanospheres is utilized, sodium carboxymethyl cellulose is used as a binder, and the prepared mesoporous hollow carbon nanosphere carbon column can greatly improve the adsorption efficiency, effectively remove harmful gases such as acid or alkaline and Volatile Organic Compounds (VOC) and the like, and achieve the purpose of purifying air.

Drawings

FIG. 1 is a scanning electron microscope image of mesoporous hollow carbon nanospheres.

FIG. 2 is a schematic diagram of a mesoporous hollow carbon nanosphere transmission electron microscope.

FIG. 3 is a distribution diagram of the pore diameter of the mesoporous hollow carbon nanosphere sphere wall.

FIG. 4 is a mesoporous hollow carbon nanosphere carbon column.

FIG. 5 is a curve for testing the adsorption performance of NOx gas in the mesoporous hollow carbon nanosphere air filter material.

Detailed Description

The invention is further illustrated by the following examples

As can be seen from FIG. 1, the mesoporous hollow carbon nanosphere is spherical or nearly spherical, and has an outer diameter of about 100-200 nm.

As shown in FIG. 2, it can be seen from the further enlarged transmission electron microscope of the mesoporous hollow carbon nanosphere that the wall thickness of the mesoporous hollow carbon nanosphere is about 20nm, the inner diameter of the hollow sphere is about 100nm, and the outer diameter is 120 nm.

The distribution diagram of the pore diameter of the mesoporous hollow carbon nanospheres analyzed after nitrogen adsorption and desorption shown in fig. 3 is about 4 nm.

FIG. 4 shows a mesoporous hollow carbon nanosphere carbon column prepared from mesoporous hollow carbon nanospheres, wherein the diameter of the carbon column is 3-5mm, and the length of the carbon column is 2-4 cm.

Fig. 5 shows the result of the NOx gas adsorption performance test of the mesoporous hollow carbon nanosphere air filter material, when the concentration of the NOx gas inlet is 1000ppb, the mesoporous hollow carbon nanosphere air filter material can rapidly and effectively reduce the concentration of the NOx gas to about 10 ppb.