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Preparation method of compound-modified glass micron pore channel and method for separating alkali metal ions by using same

An alkali metal ion and compound technology, which is applied in glass manufacturing equipment, glass molding, glass re-molding, etc., can solve the problems of high energy consumption of glass micro-channels, inconvenient use, low promotion value, etc., and achieve repeatability. Detect the effect of use, high effectiveness, and short preparation time

Active Publication Date: 2021-01-29
WENZHOU UNIVERSITY
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Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method based on composite-modified glass micro-channels and its application in the separation of mixed alkali metal ions, to solve the problems of high energy consumption, inconvenient use, poor sensitivity, large size, Technical issues such as low promotion value

Method used

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  • Preparation method of compound-modified glass micron pore channel and method for separating alkali metal ions by using same
  • Preparation method of compound-modified glass micron pore channel and method for separating alkali metal ions by using same
  • Preparation method of compound-modified glass micron pore channel and method for separating alkali metal ions by using same

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preparation example Construction

[0054] Such as Figure 1a , 1b Shown, specifically: Z 5 HN@DAC 12 N 4 o 10 A method for preparing composite-modified glass micro-pores and a method for separating alkali metal ions using the same, comprising the following steps:

[0055] Step 1: preparing glass micrometer channels;

[0056] Step 2: Prepared to be able to react to generate Z 5 HN@DAC 12 N 4 o 10 The A and B solutions of the complex, wherein the A solution is a solution of 4,13-diaza-18-crown-6, and the B solution is a solution of zinc nitrate hexahydrate,

[0057] Step 3: Prepare Z 5 HN@DAC 12 N 4 o 10 Composite-modified glass micro-pores;

[0058] Use the injection needle to inject a certain volume of A solution into the tail of the glass microtube prepared in step 1, then insert the glass microtube injected with A solution into the B solution, draw a certain amount of B solution, and let the A and B solutions in the glass The tip of the microtube reacts to form Z 5 HN@DAC 12 N 4 o 10 composi...

Embodiment

[0065] see Figure 4 shown, based on Z 5 HN@DAC 12 N 4 o 10 Preparation method of composite-modified glass micro-pores:

[0066] Step 1: Prepare glass micron channels by P-97 glass drawing instrument;

[0067] Among them, the glass micro-channel drawing condition parameters are shown in Table 1 below, and the nano-pore diameter obtained through SEM characterization is about 23±3 μm.

[0068] Table 1 Drawing Condition Parameter Diagram of Glass Micro-channel

[0069]

[0070]

[0071] Step 2: Prepare a functional Z that can react to form 5 HN@DAC 12 N 4 o 10 Complex, the operation method is as follows: first weigh 104.9mg of 4,13-diaza-18-crown-6 dissolved in 5mL of dichloromethane and 5mL of methanol solution marked as solution A, followed by 185.8mg of Zn (NO 3 ) 2 ·6H 2 O was dispersed in 10 mL methanol solution as B solution. Then shake the A and B solutions evenly under an ultrasonic instrument, and seal them with a sealing film before placing them in a ...

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Abstract

The invention discloses a preparation method of a compound-modified glass micron pore channel and a method for separating alkali metal ions by using the compound-modified glass micron pore channel. The preparation method comprises the following steps: step 1, preparing a glass micron pore channel; 2, preparing solutions A and B capable of reacting to generate a compound; 3, preparing a compound-modified glass micron pore channel. A certain volume of solution A is injected into the tail part of the glass micro-tube prepared in the step 1 by using an injection needle, then the glass micro-tube injected with the solution A is inserted into the solution B, a certain amount of solution B is sucked, and the solution A and the solution B react at the needle tip of the glass micro-tube to form a compound, thereby obtaining the nano device. The specific recognition function on potassium ions can be achieved through the crown ether salt specific pore channels of the nano device, the compound-modified glass micron pore channel is used for separating the potassium ions in a mixed alkali metal ion solution, universality is achieved, and application and popularization are better facilitated.

Description

technical field [0001] The invention relates to the field of micro-channel detection, in particular to a preparation method of a composite-modified glass micro-channel and a method for separating alkali metal ions using the same. Background technique [0002] Natural protein channels / pores have unique selectivity and efficient ion transport, prompting researchers to study the highly specific regulation of channels / pores. By studying the mechanism of biological ion channels, scientists have prepared various artificial solid channels / pores , for ion transport and separation. For example, graphene nanopores, carbon nanotubes, polyethylene terephthalate (PET) films, anodized aluminum oxide (AAO) films, and the like. [0003] Among them, glass microtubes are widely used due to their simple preparation method and low price. However, the main problems of these artificial solid channels / pores are: first, the pore size is large, showing poor ion selectivity; Functional materials a...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N27/26G01N21/73C03B23/047
CPCG01N1/28G01N27/26G01N21/73C03B23/047
Inventor 刘楠楠叶婷艳谭诗仪黄少铭
Owner WENZHOU UNIVERSITY
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