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One-step electro-synthesis method of iron-layered double hydroxide nanosheet array

A technology of nanosheet array and hydrotalcite, which is applied in the direction of nanotechnology, electrolytic inorganic material coating, etc., can solve the problems of harsh equipment requirements and serious energy consumption, and achieve the effect of broadening the application field and broad application prospects

Inactive Publication Date: 2016-11-23
BEIJING UNIV OF CHEM TECH
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  • Summary
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Problems solved by technology

Nowadays, liquid-phase hydrothermal method is mostly used for the preparation of inorganic nanomaterials. The structure and morphology of the materials obtained by this preparation method are relatively controllable, so it is widely favored by researchers or enterprises. However, the hydrothermal method generally requires high temperature and high pressure, which leads to production The energy consumption in the process is relatively serious and the equipment requirements are relatively strict

Method used

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  • One-step electro-synthesis method of iron-layered double hydroxide nanosheet array
  • One-step electro-synthesis method of iron-layered double hydroxide nanosheet array
  • One-step electro-synthesis method of iron-layered double hydroxide nanosheet array

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Effect test

Embodiment 1

[0018] Synthesis of nickel-iron hydrotalcite nanosheet arrays supported on foamed nickel:

[0019] a: the nickel foam of the conductive base is respectively ultrasonicated for 10 min with dehydrated alcohol, acetone and deionized water to remove impurities on the surface;

[0020] b: Prepare 1mg / mL nickel nitrate (Ni(NO 3 ) 2 ), 0.5mg / mL ferrous sulfate (FeSO 4 ) of mixed salt solution 50mL as the electrolyte solution;

[0021] c: In the electrolyte solution prepared in step a, a saturated calomel electrode is used as a reference electrode, and a platinum wire is used as a counter electrode, and a nickel-iron hydrotalcite nanosheet array is directly grown on foamed nickel by a constant potential method, and the electrochemically synthesized potential is set -0.9V, the synthesis time is 200s, and the synthesis temperature is 25°C.

Embodiment 2

[0023] Synthesis of cobalt-iron hydrotalcite nanosheet arrays:

[0024] a: the nickel foam of the conductive base is respectively ultrasonicated for 10 min with dehydrated alcohol, acetone and deionized water to remove impurities on the surface;

[0025] b: prepare 0.5mg / mL cobalt nitrate (Co(NO 3 ) 2 ), 0.25mg / mL ferrous sulfate (FeSO 4 ) of mixed salt solution 50mL as the electrolyte solution;

[0026] c: In the electrolyte solution prepared in step a, the saturated calomel electrode is used as the reference electrode, and the platinum wire is used as the counter electrode, and the cobalt-iron hydrotalcite nanosheet array is directly grown on the nickel foam by the constant potential method, and the electrochemically synthesized potential is set is -1V, the synthesis time is 400s, and the synthesis temperature is 25°C.

Embodiment 3

[0028] Synthesis of Lithium Iron Hydrotalcite Nanosheet Arrays:

[0029] a: the nickel foam of the conductive base is respectively ultrasonicated for 10 min with dehydrated alcohol, acetone and deionized water to remove impurities on the surface;

[0030] b: Prepare 0.5mg / mL lithium nitrate (LiNO 3 ), 0.25mg / mL ferrous sulfate (FeSO 4 ) of mixed salt solution 50mL as the electrolyte solution;

[0031] c: In the electrolyte solution prepared in step a, the saturated calomel electrode is used as the reference electrode, the platinum wire is used as the counter electrode, and the lithium-iron hydrotalcite nanosheet array is directly grown on the nickel foam by the constant potential method, and the electrochemically synthesized potential is set is -1.1V, the synthesis time is 300s, and the synthesis temperature is 25°C.

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Abstract

The invention discloses a one-step electrosynthesis method of an iron-based hydrotalcite nanosheet array. The present invention adopts a simple and rapid one-step electrosynthesis method to prepare different kinds of iron-containing hydrotalcite nanosheet arrays on various conductive substrates for the first time, and provides a relatively general method for the simple and rapid preparation of iron-based hydrotalcites. By adjusting the electrosynthesis time, the size and density of the hydrotalcite nanosheets were well regulated to achieve the best performance. The invention not only provides a brand-new and relatively general method for preparing iron-based hydrotalcite nano-arrays, but also broadens the application field of hydrotalcite-based materials. Capacitor electrode materials (SCs), lithium-ion battery electrode materials, and biosensing all have broad application prospects.

Description

technical field [0001] The invention belongs to the field of synthesis of inorganic nanomaterials, and in particular relates to a relatively universal method for preparing iron-like hydrotalcite nanosheet arrays by simple and rapid one-step electrosynthesis. Background technique [0002] The emergence and development of every industrial revolution or technological revolution of mankind is driven by simple and efficient production methods. Therefore, a new method can often drive the rapid development of a certain field. Nowadays, liquid-phase hydrothermal method is mostly used for the preparation of inorganic nanomaterials. The structure and morphology of the materials obtained by this preparation method are relatively controllable, so it is widely favored by researchers or enterprises. However, the hydrothermal method generally requires high temperature and high pressure, which leads to production The energy consumption in the process is relatively serious and the equipment...

Claims

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Application Information

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IPC IPC(8): C25D9/04B82Y40/00
CPCC25D9/04B82Y40/00
Inventor 邵明飞栗振华卫敏段雪
Owner BEIJING UNIV OF CHEM TECH
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