KR101605252B1 - Appratus for growing nano particle and mehtod for growing nano particle - Google Patents

Abstract

The present invention relates to a nanoparticle growth apparatus and a nanoparticle growth method capable of growing nanoparticles with high efficiency. The nanoparticle growth apparatus includes nanoparticles, and the nanoparticles and the vaporized solvent are mixed therein to form a particle- A solvent mixing portion; A cooling portion that is provided with a particle-solvent mixture from the solvent mixing portion and cools and condenses the particle-solvent mixture; A first charge unit that receives a portion of the condensed particle-solvent mixture from the cooling unit and charges the polarized charge of either the positive electrode or the negative electrode; A second charging unit for supplying the condensed particle-solvent mixture not supplied from the cooling unit to the first charging unit side and charging the other of the anode and the cathode with polarity; A mixing unit which is provided with a particle-solvent mixture charged to the anode or the cathode from the first charging unit and the second charging unit, respectively, and which grows the particles-solvent mixture charged by the cathode or the anode by electric attraction; A nanoparticle growth apparatus is provided.

Description

TECHNICAL FIELD [0001] The present invention relates to a nanoparticle growth apparatus and a nanoparticle growth method,

The present invention relates to a nanoparticle growth apparatus and a nanoparticle growth method, and more particularly, to a nanoparticle growth apparatus and a nanoparticle growth method capable of highly efficiently growing nanoparticles.

Aerosol is a particle floating in the air, which is harmful to the human body and causes pollution in various industrial fields.

Therefore, particle capture and analysis for the accurate inspection of aerosols has recently been studied as a very important field.

In recent years, studies have been actively carried out to investigate the photochemical smog, visibility, and atmospheric chemical reaction phenomena in the atmospheric environment, or to evaluate the harmful effects of fine particles inhaled into the lungs of the human body by respiration. The technique of measuring the concentration of water by the particle size of the aerosol is very important.

In particular, particle generation and growth have recently attracted attention as potential sources of aerosols that affect climate and human health. Particles of a few nanometers generated in the atmosphere can directly affect the human respiratory system. When newly formed particles in the atmosphere grow more than 50 nm, they act as cloud nuclei and contribute to the indirect effect of aerosols in the climate.

In addition, if newly generated particles in the atmosphere grow more than 100 nm, they can directly scatter sunlight and cause climate cooling effect.

In addition, its importance is being emphasized in a wide range of applications in a variety of industries, including physicochemical characterization of aerosols, particle control in the semiconductor field, and nanotechnology.

In this respect, studies for capturing aerosols have been actively carried out, and in the past, aerosols were simply collected by directly collecting aerosols flowing in the atmosphere.

However, the collection of aerosols by such a direct method is problematic in that the aerosol is hardly collected by the filter or the like in view of the fact that the particles are fine particles that perform brown movement, and there is a problem in that the aerosol is separately processed, This is problematic in that the inherent properties of the aerosol can be lost even if indirectly.

 Accordingly, there is a need for an apparatus and a method for growing an aerosol by a new method.

<Reference> Korean Patent Registration No. 10-1156104 (Jun. 7, 2012)

Accordingly, it is an object of the present invention to provide a nanoparticle growth apparatus and a nanoparticle growth method capable of highly efficiently growing nanoparticles through a simple method.

According to the present invention, the above objects can be accomplished by a method of manufacturing a nanocomposite nanocomposite nanocomposite nanocomposite nanocomposite nanocomposite nanocomposite nanocomposite nanocomposite nanocomposite nanocomposite according to the present invention, A cooling portion that is provided with a particle-solvent mixture from the solvent mixing portion and cools and condenses the particle-solvent mixture; A first charge unit that receives a portion of the condensed particle-solvent mixture from the cooling unit and charges the polarized charge of either the positive electrode or the negative electrode; A second charging unit which is provided with the condensed particle-solvent mixture not provided from the cooling unit to the first charging unit and charges the other of the polarity of the anode or the cathode with the polarity of the other of the first charging unit and the second charging unit, And a mixing part which is provided with a particle-solvent mixture charged to the positive electrode or the negative electrode from each of the positive electrode or the negative electrode and which combines the electrified particle-solvent mixture with the positive electrode or the negative electrode to grow the nanoparticle do.

Wherein the charged particle-solvent mixture or the grown particle-solvent mixture is provided from the charging section or the mixing section, and evaporation of the solvent from the charged particle-solvent mixture or the grown particle- Preferably further comprising:

The solvent is preferably water or an alcohol compound.

According to another aspect of the present invention, there is provided a process for producing a nanoparticle, comprising: forming a mixture of nanoparticles and a vaporized solvent to form a particle-solvent mixture; A cooling step of condensing the solvent by cooling the particle-solvent mixture; A charging step of selectively charging the cooled particle-solvent mixture such that the cooled particle-solvent mixture has a polarity of either the positive electrode or the negative electrode; And a growth step of growing the anode-cathode charged particle-solvent mixture by an electric attraction.

Here, it is preferable to further include a drying step of heating the charged particle-solvent mixture or the grown particle-solvent mixture to evaporate the solvent.

Further, it is preferable that the solvent is formed of water or an alcohol compound in the mixture forming step.

According to the present invention, there is provided a nanoparticle growing apparatus and a nanoparticle growing method capable of simply and efficiently growing nanoparticles.

1 is a schematic view of a nanoparticle growth apparatus according to an embodiment of the present invention,
FIG. 2 is a view schematically showing a reaction in a solvent mixing part in the nanoparticle growing apparatus according to FIG. 1,
FIG. 3 is a view schematically showing a reaction in the cooling section in the nanoparticle growth apparatus according to FIG. 1,
FIG. 4 is a view schematically showing a reaction in a charging part in the nanoparticle growing apparatus according to FIG. 1,
FIG. 5 is a view schematically showing a reaction in a mixing part in the nanoparticle growing apparatus according to FIG. 1,
FIG. 6 is a schematic view illustrating a reaction in the evaporator in the nanoparticle growth apparatus of FIG. 1,
FIG. 7 is a process flow chart schematically illustrating a nanoparticle growth method according to an embodiment of the present invention.

Hereinafter, a nanoparticle growth apparatus and a nanoparticle growth method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic view illustrating a nanoparticle growing apparatus according to an embodiment of the present invention.

Referring to FIG. 1, a nanoparticle growth apparatus 100 according to an embodiment of the present invention can highly efficiently grow nanoparticles by charging nanoparticles at high cost and bonding them through an electrical attraction, A mixing unit 110, a cooling unit 120, a charging unit 130, and a mixing unit 140.

FIG. 2 is a view schematically showing a reaction in a solvent mixing portion in the nanoparticle growing apparatus according to FIG. 1; FIG.

Referring to FIG. 2, the solvent mixing portion 110 is provided with nanoparticles, and a space for forming the particles-solvent mixture is formed by mixing the nanoparticles with the vaporized solvent.

 Here, the solvent may be provided in a condensed state in the solvent mixing portion 110, and then vaporized by saturating vaporization, or a solvent in a substantially saturated or supersaturated state may be provided in the solvent mixing portion 110 .

However, it is not important whether the solvent is vaporized by any reaction, and it is important that the vaporized solvent is mixed with the nanoparticles.

Here, the solvent may be water or an alcohol compound.

Meanwhile, in the solvent mixing unit 110, the nanoparticles are mixed with a sufficiently vaporized solvent, and preferably all of the nanoparticles provided to the solvent mixing unit 110 react with the vaporized solvent.

FIG. 3 is a view schematically showing a reaction in the cooling section in the nanoparticle growing apparatus according to FIG. 1; FIG.

Referring to FIG. 3, the cooling unit 120 receives a particle-solvent mixture from the solvent mixing unit 110 and cools it to provide a space for condensing the solvent of the particle-solvent mixture, more precisely, the particle- will be.

For example, when the internal temperature of the cooling section 120 is maintained at a temperature below the dew point of the solvent, the solvent in the particle-solvent mixture condenses around the particles, that is, the particles condense and the solvents condense.

Of course, the cooling section 120 may cool the particle-solvent mixture in a manner that maintains the internal temperature, but may be cooled by heat exchange with the cooling fluid, or by thermal expansion. However, it is needless to say that the present invention is not limited thereto, and all conventional cooling techniques can be used.

FIG. 4 is a view schematically showing a reaction in a charging section in the nanoparticle growing apparatus according to FIG. 1; FIG.

Referring to FIG. 4, the charging unit 130 is provided with a condensed particle-solvent mixture from the cooling unit 120, and a part of the condensed particle-solvent mixture is mixed with the remainder of the particle- And includes a first charging unit 131 and a second charging unit 132 which are charged by a negative electrode.

The first charging unit 131 is connected to the cooling unit 120 and provides a space for charging a polarized one of the positive and negative electrodes by receiving a part of the condensed particle-solvent mixture. In one embodiment of the present invention, the first charging section 131 is provided to charge the condensed particle-solvent mixture to the anode.

The second charging unit 132 is connected to the cooling unit 120 and provides a space for charging the other of the positive and negative polarities by receiving the remainder of the condensed particle-solvent mixture. In one embodiment of the present invention, the second charging section 132 is provided to charge the condensed particle-solvent mixture to the negative electrode.

That is, the first charging unit 131 and the second charging unit 132 are connected to the cooling unit 120, respectively, to supply the condensed particle-solvent mixture and charge the condensed particle-solvent mixture to different polarities.

Here, it is preferable that the condensed particle-solvent mixture is provided in the same ratio to the first charging portion 131 and the second charging portion 132.

Meanwhile, the charging unit 130 is not limited to a specific apparatus, and a conventional charger, for example, a corona charger, or the like may be used. In an embodiment of the present invention, The electrons are released to charge the condensed particle-solvent mixture.

Although the first charging unit 131 and the second charging unit 132 are described as being separate chambers in the embodiment of the present invention, the present invention is not limited thereto, and two chambers partitioned in one chamber .

FIG. 5 is a view schematically showing a reaction in a mixing portion in the nanoparticle growing apparatus according to FIG. 1; FIG.

5, the mixing part 140 receives the charged particle-solvent mixture from the first charging part 131 and the second charging part 132, respectively, so that they are combined with each other by electric attraction to grow To provide space for

Here, the particle-solvent mixture provided from the first charging section 131 is in a state in which (+) electric charge is attached to the outer surface, and the particle-solvent mixture supplied from the second charging section 131 is in the state of (- Is attached.

Therefore, repulsion or attraction acts between the particle-solvent mixtures depending on the nature of the charge adhering to the particle-solvent mixture, and the particle-solvent mixtures provided from the same charging section are dispersed to each other by repulsion, The particle-solvent mixtures provided from the parts are bonded together by gravity.

In an embodiment of the present invention, the mixing part 140 is provided as a separate mixing chamber, but is not limited thereto. The mixing part 140 may extend from the first charging part 131 and the second charging part 132, As shown in Fig. That is, the particle-solvent mixtures can be allowed to grow in combination with each other in the process of flowing along the flow path.

FIG. 6 is a view schematically showing the reaction in the evaporator in the nanoparticle growth apparatus according to FIG. 1;

Referring to FIG. 6, according to an embodiment of the present invention, there is provided a particle-solvent mixture grown from a mixing portion 140, and the grown particle-solvent mixture is heated to form a grown particle-solvent mixture, And may further include a vaporization unit 150 for vaporizing the vaporized gas.

The nanoparticles have a sufficiently increased volume due to mixing with the solvent, but there is a need to remove the solvent from the particle-solvent mixture if there is a special need, for example, to collect only the nanoparticles separately.

Accordingly, in an embodiment of the present invention, the evaporator 150 may be provided to evaporate the solvent from the grown particle-solvent mixture as needed.

Here, the evaporator 150 may include heating means for heating the interior thereof, or may evaporate the solvent in the particle-solvent mixture by thermally contacting the grown particle-solvent mixture with the heat-exchange working fluid, but the present invention is not limited thereto .

Next, a method of growing nanoparticles according to an embodiment of the present invention will be described.

FIG. 7 is a process flow chart schematically illustrating a nanoparticle growth method according to an embodiment of the present invention.

Referring to FIG. 7, a nanoparticle growth method (S100) according to an embodiment of the present invention can grow nanoparticles with high efficiency by charging the nanoparticles at high cost and then bonding them through an electrical attraction, Forming step S110, a cooling step S120, a charging step S130, and a growing step S140.

The mixture forming step (S110) is a step of mixing the nanoparticles and the vaporized solvent to form a particle-solvent mixture.

Here, the nanoparticles can be selected by selecting particles to be grown as needed, and the solvent can be selected by considering the ease of subsequent condensation and evaporation processes, reactivity with the nanoparticles, and the like.

According to one embodiment of the present invention, the solvent is provided as water or an alcohol compound.

In this step, the aim is to form a mixture of nanoparticles and vaporized solvent, and not necessarily any bonds between the nanoparticles and the vaporized solvent.

The cooling step (S120) is a step of cooling the particle-solvent mixture formed through the mixture formation step (S110) to condense the solvent in the particle-solvent mixture. When the particle-solvent mixture is cooled by any means, the solvent of the particle-solvent mixture is cooled to the liquid state in the vapor state. That is, in fact, the cooling step (S120) can be regarded as a step that affects the state of the solvent in the particle-solvent mixture.

Here, when the solvent of the particle-solvent mixture is cooled, the condensation of the solvent is started with the particles as the condensation nucleus. Thus, the solvent condenses around and around the particle, and the state of the particle-solvent mixture changes in the form that the liquid solvent surrounds the particle.

When the solvent is vaporized in the particle-solvent mixture, most of the solvent and particles are not bonded, but when the solvent is cooled through the cooling step (S120), the state of the particle-solvent mixture in the above- The volume of the particle-solvent mixture increases. This can be seen as a primary growth of the particle-solvent mixture.

The charging step (S130) is a step of charging the cooled particle-solvent mixture through a cooling step (S120), with a part thereof being an anode and the remainder being a cathode.

For example, half of the cooled particle-solvent mixture has polarity of the anode and the remainder of the cooled particle-solvent mixture charges the cathode with polarity.

Here, the charging step S130 may utilize two different chambers, such as the charging unit 130 of the nanoparticle growth apparatus 100 according to the embodiment described above.

Further, charges can be released from the carbon fibers 133 and adhere to the outer surface of the particle-solvent mixture. Since the charges are adhered to the outer surface of the polar solvent of the particle-solvent mixture, The deposition rate of the charge is remarkably improved. Thus, some particle-solvent mixture is provided with positive charge to have the properties of the positive electrode and negative (-) charge is provided to the remaining particle-solvent mixture to have the properties of the negative electrode.

The mixing step (S140) is a step of mixing the particle-solvent mixture of the positive electrode and the particle-solvent mixture of the negative electrode and bonding the particle-solvent mixture by an electrical attraction.

That is, through the above-described charging step (S130), the particle-solvent mixture has a property of a positive electrode or a negative electrode selectively, and the particle-solvent mixtures having different polarities by the electric attraction are bonded to each other.

That is, the volume of each of the particle-solvent mixture can be increased by at least two times by combining at least two particle-solvent mixtures having different polarities by an electrical attraction. This can be seen as a secondary growth of the particle-solvent mixture.

That is, the particle-solvent mixture can be grown through two steps through the cooling step (S120) and the mixing step (S140).

According to an embodiment of the present invention, it is necessary to extract only the grown nanoparticles as needed. The charged particle-solvent mixture is dried (S150) by heating the grown particle-solvent mixture to evaporate the solvent .

That is, the drying step (S150) can be carried out after the charging step (S130) or after the mixing step (S140) by evaporating the solvent in the particle-solvent mixture.

Here, the specific procedure may vary depending on which step is performed after the drying step (S150), but it is the same in that the grown nanoparticles can be obtained.

In the case where the drying step S150 is performed after the charging step S130, the mixing step S140 will be performed in a state where the charges are highly integrated on the particle, and the drying step S150 is performed after the mixing step S140 , Only the solvent will be removed from the already grown particle-solvent mixture.

Here, in the drying step (S150), any method capable of heating the solvent may be used and is not limited to a particular method.

The scope of the present invention is not limited to the above-described embodiments, but may be embodied in various forms of embodiments within the scope of the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

100: nanoparticle growth apparatus 110: solvent mixing unit
120: cooling section 130:
140: mixing part 150: evaporating part
S100: Nanoparticle growth method S110: Mixture formation step
S120: Cooling step S130: Charging step
S140: growth step S150: drying step

Claims (6)

A solvent mixing portion provided with nanoparticles and mixing the nanoparticles and the vaporized solvent therein to form a particle-solvent mixture;
A cooling portion that is provided with a particle-solvent mixture from the solvent mixing portion and cools and condenses the particle-solvent mixture;
A first charge unit charged with a part of the condensed particle-solvent mixture from the cooling unit at a high cost in the polarity of either the anode or the cathode;
A second charging unit for charging the condensed particle-solvent mixture not provided from the cooling unit toward the first charging unit at a high cost with the polarity of the other of the anode and the cathode;
Wherein a particle-solvent mixture charged at a high cost from the first charging portion and the second charging portion to the positive electrode or the negative electrode is provided, and the particle-solvent mixture charged with the high- And a mixing portion for growing a particle-solvent mixture charged at a high cost with an anode and a particle-solvent mixture charged at a high cost with the cathode. The method according to claim 1,
An evaporation portion provided with the charged particle-solvent mixture or the grown particle-solvent mixture from the charging portion or the mixing portion, the evaporation portion evaporating the solvent in the charged particle-solvent mixture or the grown particle-solvent mixture; The nanoparticle growth device further comprising: The method according to claim 1,
Wherein the solvent is water or an alcohol compound. A mixture forming step of mixing the nanoparticles and the vaporized solvent to form a particle-solvent mixture;
A cooling step of condensing the solvent by cooling the particle-solvent mixture;
A charging step of selectively charging the cooled particle-solvent mixture such that the cooled particle-solvent mixture has a high polarity of either the positive electrode or the negative electrode;
A growth step in which a particle-solvent mixture charged at a high cost to the anode is charged and a particle-solvent mixture charged at a high cost to the cathode are combined by an electrical attraction between the particle-solvent mixture charged at a high cost to the anode or the cathode; &Lt; / RTI &gt; 5. The method of claim 4,
And drying the charged particle-solvent mixture or the grown particle-solvent mixture to evaporate the solvent. 5. The method of claim 4,
Wherein the solvent is water or an alcohol compound in the mixture forming step.

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