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Preparation method of glass micro-pore channel and use of it to separate alkali metal ions

An alkali metal ion, glass technology, applied in glass manufacturing equipment, glass forming, glass re-molding and other directions, can solve the problems of low promotion value, large size, poor sensitivity, etc. The effect of a short preparation time

Active Publication Date: 2022-06-21
WENZHOU UNIV
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  • Description
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  • Application Information

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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 glass micro-pore channel and use of it to separate alkali metal ions
  • Preparation method of glass micro-pore channel and use of it to separate alkali metal ions
  • Preparation method of glass micro-pore channel and use of it to separate alkali metal ions

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preparation example Construction

[0054] like Figure 1a , 1b shown, specific: Z 5 HN@DAC 12 N 4 O 10 The preparation method of composite-modified glass micro-channels and the method for separating alkali metal ions by using the same, comprising the following steps:

[0055] Step 1: Preparation of glass micro-channels;

[0056] Step 2: Prepared to react to generate Z 5 HN@DAC 12 N 4 O 10 A, B solution of the complex, wherein, A solution is a solution of 4,13-diaza-18-crown-6, 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 microchannels;

[0058] A certain volume of solution A is injected into the tail of the glass micro-tube prepared in step 1 using an injection needle, then insert the glass micro-tube into which solution A has been injected into solution B, draw a certain amount of solution B, and let solutions A and B in the glass The tip of the microtube reacts to form Z 5 HN@DAC 12 N 4 O 10 composite to obtain...

Embodiment

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

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

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

[0068] Table 1. Drawing condition parameters of glass micro-channels

[0069]

[0070]

[0071] Step 2: Prepare Z that can react to form functional Z 5 HN@DAC 12 N 4 O 10 The compound, the operation method is as follows: firstly, 104.9 mg of 4,13-diaza-18-crown-6 was dissolved in 5 mL of dichloromethane and 5 mL of methanol solution and marked as solution A, followed by 185.8 mg of Zn(NO 3 ) 2 ·6H 2 O was dispersed in 10 mL methanol solution as B solution. Then, the A and B solutions were shaken up under an ultrasonic apparatus, and sealed with a sealing film before being placed in ...

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Abstract

The invention discloses a preparation method of a composite-modified glass micro-channel and a method for separating alkali metal ions by using it. Step 1: preparing a glass micro-channel; Step 2: preparing A and B solutions capable of reacting to form a compound. Three: Preparation of composite-modified glass micro-channels; use the injection needle to inject a certain volume of A solution into the tail of the glass micro-tube prepared in step 1, then insert the glass micro-tube injected with A solution into the B solution, and draw a certain amount The B solution, let the A and B solutions react at the tip of the glass microtube to form a complex to obtain a nano-device. It can specifically recognize potassium ions through the crown ether salt-specific channels of the nano-device, and is used for the separation of potassium ions in mixed alkali metal ion solutions. It has universal applicability and is more conducive to popularization and use.

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 by 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 the transport and separation of ions. 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 the simple and easy 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; secon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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 UNIV
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