CN210186592U - Device for purifying nanocrystalline solution - Google Patents
Device for purifying nanocrystalline solution Download PDFInfo
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- CN210186592U CN210186592U CN201920526069.6U CN201920526069U CN210186592U CN 210186592 U CN210186592 U CN 210186592U CN 201920526069 U CN201920526069 U CN 201920526069U CN 210186592 U CN210186592 U CN 210186592U
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Abstract
The application discloses device of purification nanocrystalline solution, the device includes: a tank containing a purification chamber; the at least one liquid inlet is arranged on the tank body and used for introducing a nanocrystalline solution or a solvent or gas into the purification cavity; at least one liquid outlet arranged on the tank body and used for leading out the purified nanocrystalline solution or solvent from the purification cavity; and the filtering unit is connected with the liquid outlet and used for separating the nanocrystalline solid and the solvent containing impurities, and the filtering unit comprises a filter element with filtering holes. According to the device for purifying the nanocrystalline solution, the filtering unit can allow a solvent containing impurities to pass through, so that nanocrystalline solids are reserved, and the solvent can be adopted to clean the nanocrystalline for multiple times in the purifying process, so that the nanocrystalline is purified; in addition, the device is suitable for large-scale purification of nanocrystals.
Description
Technical Field
The application relates to the field of nano materials, in particular to a device for purifying a nanocrystalline solution.
Background
One problem commonly encountered in solutions of nanocrystals synthesized by wet chemical methods is that excess raw materials, small molecule ligands, etc. used in the synthesis may remain as impurities. Such impurities can affect the charge distribution and active sites on the surface of the nanocrystal, and thus require purification for subsequent use.
In the prior art, when a smaller-scale nanocrystal solution is purified, a centrifuge tube is generally used for centrifuging to remove a solution containing impurities after the nanocrystal is precipitated, and the method has many defects in large-scale preparation of the nanocrystal.
SUMMERY OF THE UTILITY MODEL
The object of the present application is to provide an apparatus for purifying a nanocrystal solution so as to be suitable for large-scale nanocrystal purification.
According to an aspect of the present application, there is provided an apparatus for purifying a nanocrystal solution, comprising: a tank containing a purification chamber; the at least one liquid inlet is arranged on the tank body and used for introducing a nanocrystalline solution or a solvent or gas into the purification cavity; at least one liquid outlet arranged on the tank body and used for leading out the purified nanocrystalline solution or solvent from the purification cavity; and the filtering unit is connected with the liquid outlet and used for separating the nanocrystalline solid and the solvent containing impurities, and the filtering unit comprises a filter element with filtering holes.
Further, the apparatus comprises: a tank containing a purification chamber; the first liquid inlet is arranged on the tank body and used for introducing the nanocrystalline solution into the purification cavity; the second liquid inlet is arranged on the tank body and used for introducing a solvent into the purification cavity; at least one liquid outlet arranged on the tank body and used for leading out the purified nanocrystalline solution or solvent from the purification cavity; and the filtering unit is connected with the liquid outlet and used for separating the nanocrystalline solid and the solvent containing impurities, and the filtering unit comprises a filter element with filtering holes.
Further, the apparatus comprises: a tank containing a purification chamber; the first liquid inlet is arranged on the tank body and used for introducing the nanocrystalline solution into the purification cavity; the second liquid inlet is arranged on the tank body and used for introducing a solvent into the purification cavity; the third liquid inlet is arranged on the tank body and used for introducing gas into the purification cavity; at least one liquid outlet arranged on the tank body and used for leading out the purified nano-crystal or the solvent from the purification cavity; and the filtering unit is connected with the liquid outlet and used for separating the nanocrystalline solid and the solvent containing impurities, and the filtering unit comprises a filter element with filtering holes.
Further, the apparatus comprises: a tank containing a purification chamber; the at least one liquid inlet is arranged on the tank body and used for introducing a nanocrystalline solution or a solvent or gas into the purification cavity; the first liquid outlet is arranged on the tank body and used for leading out the purified nanocrystalline solution from the purification cavity; the second liquid outlet is arranged on the tank body and used for leading the solvent out of the purification cavity; and the filtering unit is connected with the liquid outlet and used for separating the nanocrystalline solid and the solvent containing impurities, and the filtering unit comprises a filter element with filtering holes.
Further, the average pore size of the filter pores is between 0.1 and 10 microns.
Furthermore, the material of the filter element is inorganic oxide.
Further, the purification cavity also contains a stirring unit.
Has the advantages that: according to the device for purifying the nanocrystalline solution, the filtering unit can allow a solvent containing impurities to pass through, so that nanocrystalline solids are reserved, and the solvent can be adopted to clean the nanocrystalline for multiple times in the purifying process, so that the nanocrystalline is purified; furthermore, the apparatus is suitable for large-scale purification of nanocrystals.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for purifying a nanocrystal solution in an exemplary embodiment of the present application;
FIG. 2 is a schematic structural diagram of an apparatus for purifying a nanocrystal solution in an exemplary embodiment of the present application;
fig. 3 is a schematic structural diagram of an apparatus for purifying a nanocrystal solution according to an exemplary embodiment of the present disclosure.
Detailed Description
The technical solutions in the examples of the present application will be described in detail below with reference to the embodiments of the present application. It should be noted that the described embodiments are only some embodiments of the present application, and not all embodiments.
As shown in fig. 1, the apparatus 100 for purifying a nanocrystal solution includes: a tank 11 containing a purification chamber 12; a liquid inlet 13 arranged on the tank body 11, a liquid outlet 14 arranged on the tank body 11, and a filtering unit 15 connected with the liquid outlet 14.
The apparatus 100, when purifying a nanocrystal solution, comprises the following processes: step 1), introducing an unpurified nanocrystal solution into a purification chamber 12 through a liquid inlet 13, so that the purification chamber 12 is partially filled, wherein the solvent of the unpurified nanocrystal solution is a non-polar compound such as toluene due to the fact that the nanocrystals are hydrophobic; step 2), introducing a solvent containing polar compounds, such as acetonitrile, into the purification chamber 12 through the liquid inlet 13, wherein when the acetonitrile is added, the polarity of the nanocrystal solution is gradually increased to enable the nanocrystals to be separated out as solid precipitates, so as to obtain nanocrystal solid precipitates and a solvent containing impurities; step 3), adding gas through the liquid inlet 13, wherein the gas is preferably inert gas, and when the gas is added, the pressure in the purification cavity 12 is obviously increased, so that the solvent containing impurities can be led out through the liquid outlet 14, and at the moment, the nanocrystalline solid cannot pass through the filtering unit 15; the step 2) and the step 3) can basically remove part of impurities in the nanocrystalline solution, and the step 4) is used for further removing the impurities, and the step 2) and the step 3) are repeated for multiple times; step 5), introducing a non-polar solvent, preferably toluene, cyclohexane and the like, into the purification cavity 12 through the liquid inlet 13 so as to dissolve the nanocrystal solid, thereby obtaining a purified nanocrystal solution; and 6), adding gas through a liquid inlet 13, and leading out the purified nanocrystal solution through an outlet liquid 14.
When the step 2) is repeated, the specific process is as follows: firstly, adding a part of nonpolar solvent such as toluene and the like to dissolve the nanocrystal solid, and then adding a polar solvent to precipitate and separate out the nanocrystal; if the nonpolar solvent is directly added into the nanocrystal solid, the nanocrystal solid cannot be cleaned because the nonpolar solvent cannot dissolve the nanocrystal solid.
The average pore diameter of the filter pores of the filter unit 15 is between 0.1 micron and 10 microns, so that the solvent containing impurities can be easily led out, and the nanocrystalline solid can directly flow out along with the solvent.
In order to further increase the dispersibility of the nanocrystals in the solvent and thus achieve a better purification effect, the purification chamber further comprises a stirring unit.
As shown in fig. 2, the apparatus 200 for purifying a nanocrystal solution includes: a tank 11 containing a purification chamber 12; the first liquid inlet 131 and the second liquid inlet 132 are arranged on the tank body 11, the liquid outlet 14 is arranged on the tank body 11, and the filtering unit 15 is connected with the liquid outlet 14. The first inlet 131 may be used to introduce unpurified nanocrystal solution and the second inlet 132 may be used to introduce a gas or solvent.
As shown in fig. 3, the apparatus 300 for purifying a nanocrystal solution includes: a tank 11 containing a purification chamber 12; the first liquid inlet 131, the second liquid inlet 132 and the third liquid inlet 133 are arranged on the tank body 11, the liquid outlet 14 is arranged on the tank body 11, and the filtering unit 15 is connected with the liquid outlet 14. The first inlet 131 may be used to introduce unpurified nanocrystal solution, the second inlet 132 may be used to introduce gas, and the third inlet 133 may be used to introduce solvent.
Although the present disclosure has been described and illustrated in greater detail by the inventors, it should be understood that modifications and/or alterations to the above-described embodiments, or equivalent substitutions, will be apparent to those skilled in the art without departing from the spirit of the disclosure, and that no limitations to the present disclosure are intended or should be inferred therefrom.
Claims (7)
1. An apparatus for purifying a nanocrystal solution, comprising:
a tank containing a purification chamber;
the at least one liquid inlet is arranged on the tank body and used for introducing a nanocrystalline solution or a solvent or gas into the purification cavity;
at least one liquid outlet arranged on the tank body and used for leading out the purified nanocrystalline solution or solvent from the purification cavity;
and the filtering unit is connected with the liquid outlet and used for separating the nanocrystalline solid and the solvent containing impurities, and the filtering unit comprises a filter element with filtering holes.
2. The apparatus of claim 1, wherein the apparatus comprises:
a tank containing a purification chamber;
the first liquid inlet is arranged on the tank body and used for introducing the nanocrystalline solution into the purification cavity;
the second liquid inlet is arranged on the tank body and used for introducing a solvent into the purification cavity;
at least one liquid outlet arranged on the tank body and used for leading out the purified nanocrystalline solution or solvent from the purification cavity;
and the filtering unit is connected with the liquid outlet and used for separating the nanocrystalline solid and the solvent containing impurities, and the filtering unit comprises a filter element with filtering holes.
3. The apparatus of claim 1, wherein the apparatus comprises:
a tank containing a purification chamber;
the first liquid inlet is arranged on the tank body and used for introducing the nanocrystalline solution into the purification cavity;
the second liquid inlet is arranged on the tank body and used for introducing a solvent into the purification cavity;
the third liquid inlet is arranged on the tank body and used for introducing gas into the purification cavity;
at least one liquid outlet arranged on the tank body and used for leading out the purified nano-crystal or the solvent from the purification cavity;
and the filtering unit is connected with the liquid outlet and used for separating the nanocrystalline solid and the solvent containing impurities, and the filtering unit comprises a filter element with filtering holes.
4. The apparatus of claim 1, wherein the apparatus comprises:
a tank containing a purification chamber;
the at least one liquid inlet is arranged on the tank body and used for introducing a nanocrystalline solution or a solvent or gas into the purification cavity;
the first liquid outlet is arranged on the tank body and used for leading out the purified nanocrystalline solution from the purification cavity;
the second liquid outlet is arranged on the tank body and used for leading the solvent out of the purification cavity;
and the filtering unit is connected with the liquid outlet and used for separating the nanocrystalline solid and the solvent containing impurities, and the filtering unit comprises a filter element with filtering holes.
5. The device of claim 1, wherein the filter pores have an average pore size between 0.1 and 10 microns.
6. The apparatus of claim 1, wherein the filter element is made of an inorganic oxide.
7. The apparatus of claim 1, wherein the purification chamber further comprises a stirring unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920526069.6U CN210186592U (en) | 2019-04-18 | 2019-04-18 | Device for purifying nanocrystalline solution |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920526069.6U CN210186592U (en) | 2019-04-18 | 2019-04-18 | Device for purifying nanocrystalline solution |
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| CN210186592U true CN210186592U (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920526069.6U Active CN210186592U (en) | 2019-04-18 | 2019-04-18 | Device for purifying nanocrystalline solution |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110038350A (en) * | 2019-04-18 | 2019-07-23 | 苏州星烁纳米科技有限公司 | The device and purification process of purified nanotubes crystalline substance solution |
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2019
- 2019-04-18 CN CN201920526069.6U patent/CN210186592U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110038350A (en) * | 2019-04-18 | 2019-07-23 | 苏州星烁纳米科技有限公司 | The device and purification process of purified nanotubes crystalline substance solution |
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