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Method for preparing organic molecule intercalation hydrotalcite array by one-step method

An organic molecule, hydrotalcite technology, applied in the fields of hydrotalcite, chemical instruments and methods, inorganic chemistry, etc., can solve the problem of inability to develop organic molecule intercalated hydrotalcite arrays, etc., to improve the degree of exposure and stability, increase utilization The effect of improving the rate and electrochemical performance

Active Publication Date: 2021-07-13
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, although many attempts have been made before, it is still impossible to develop a simple and controllable method to achieve the preparation of organic molecular intercalated hydrotalcite arrays with good morphology.

Method used

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  • Method for preparing organic molecule intercalation hydrotalcite array by one-step method
  • Method for preparing organic molecule intercalation hydrotalcite array by one-step method
  • Method for preparing organic molecule intercalation hydrotalcite array by one-step method

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Preparation of cobalt-aluminum hydrotalcite arrays co-intercalated with sodium p-toluenesulfonate (PA) and m-aminobenzenesulfonic acid (MA):

[0027] a: Prepare 100mg / mL cobalt nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O), 50mg / mL aluminum nitrate nonahydrate (Al(NO 3 ) 3 9H 2 O) metal salt solution 10mL;

[0028] b: Prepare 70mg / mL hexamethylenetetramine (C 6 h 12 N 4 ), 10mg / mL ammonium fluoride (NH 4 F) alkaline solution 10mL;

[0029] c: prepare 25mg / mL sodium p-toluenesulfonate (C 7 h 7 NaO 3 S), 25mg / mL sodium sulfanilate (C 6 h 6 NNaO 3 S) 20 mL of intercalation molecule solution;

[0030] d: Add the alkali solution prepared in step b dropwise to the metal salt solution prepared in step a, and then add the intercalation molecule solution prepared in step c dropwise therein to obtain a transparent and clear pink reaction solution. The reaction solution was transferred to a reaction kettle, and a piece of 3cm×2cm carbon fiber cloth was put into the ke...

Embodiment 2

[0033] Preparation of nickel-aluminum hydrotalcite arrays intercalated with sulfanilic acid (MA):

[0034] a: Prepare 150mg / mL nickel nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O), 75mg / mL aluminum nitrate nonahydrate (Al(NO 3 ) 3 9H 2 O) metal salt solution 10mL;

[0035]b: Prepare 40mg / mL urea (CH 4 N 2 O), 6mg / mL ammonium fluoride (NH 4 F) alkaline solution 15mL;

[0036] c: prepare 20mg / mL m-aminobenzenesulfonic acid (C 6 h 7 NO 3 S) 25 mL of intercalation molecule solution;

[0037] d: Add the alkaline solution prepared in step b dropwise to the metal salt solution prepared in step a, and then add the intercalation molecule solution prepared in step c dropwise therein to obtain a clear green reaction solution. The reaction solution was transferred to a reaction kettle for hydrothermal synthesis, and a piece of 5cm×3cm copper foam was put into the kettle for hydrothermal synthesis. The synthesis time was 10h and the synthesis temperature was 100°C.

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Abstract

The invention discloses a method for preparing an organic molecule intercalation hydrotalcite array by a one-step method. According to the method, on the basis of the confinement effect of hydrotalcite laminates and interlayer organic molecules, intercalated organic molecules and laminate metal salt are prepared into a mixed solution, the organic molecule intercalated hydrotalcite array is directly prepared through a one-step hydrothermal method, and complex ion exchange and other treatment processes are not needed. The interlayer spacing of organic molecule intercalated hydrotalcite is obviously enlarged, the utilization rate of interlayer active sites is increased, and the electrochemical performance of the hydrotalcite is favorably improved. The directly prepared organic molecule intercalated hydrotalcite with the array structure can effectively prevent the occurrence of a stacking or falling phenomenon in the use process of the powder hydrotalcite, and the exposure degree and the stability of active sites of the hydrotalcite can be further improved. The organic molecule intercalated hydrotalcite array prepared by the method has wide application prospects in the aspects of supercapacitor electrode materials, metal ion battery electrode materials, oxygen evolution reaction, biosensors and the like.

Description

technical field [0001] The invention belongs to the technical field of inorganic material synthesis, in particular to a method for preparing an organic molecule intercalation hydrotalcite array in one step. Background technique [0002] Layered double hydroxides (hydrotalcites, LDHs) are a typical class of anionic layered materials, and their chemical composition can be expressed by the general formula [M II 1-x m III x (OH) 2 ] z+ (A n- ) z / n ·yH 2 O to express, where M II and M III are the divalent and trivalent metal cations in the host laminate, respectively, A n - is the interlayer anion that balances the positive charge of the laminate. The height of the layer elements and interlayer molecules of hydrotalcite material can be adjusted, and it has interlayer confinement effect. It has been used to prepare a variety of new functional materials. In recent years, it has received extensive attention in the fields of battery electrode materials, catalyst supports, ...

Claims

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Application Information

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IPC IPC(8): C01F7/00
CPCC01P2002/72C01P2004/03C01F7/785
Inventor 邵明飞范馗栗振华谢文富卫敏
Owner BEIJING UNIV OF CHEM TECH