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Improved synthesis method of nano alpha-Ni(OH)2

A synthesis method and nanotechnology, applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as insufficient reaction, and achieve the effect of thorough reaction, suitable promotion and improvement of time.

Inactive Publication Date: 2018-10-02
CHIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the present invention is aimed at the defect in the prior art, provides a kind of nano α-Ni(OH) for this purpose 2 An improved synthetic method for α-Ni(OH) 2 Insufficient reaction in the synthesis process, the commonly used caustic is replaced by NaBH 4

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A kind of nanometer α-Ni(OH) 2 The improved synthetic method, its preparation steps are as follows:

[0015] 1) Weigh 0.238g of NiCl with a balance 2 ﹒ 6H 2 O and 0.200g of PVP, add about 40mL of distilled water, and dissolve it under ultrasonic conditions to form a light green clear solution, and the ultrasonic use time is 1min;

[0016] 2) Transfer the clear solution to a three-necked flask, set the liquid crystal digital stirrer at a speed of 800r / min, stir the solution for 45min, and then let it stand for use;

[0017] 3) Take 40mL of configured NaBH 4 The solution was added dropwise to the solution in step 2) within 15min with a syringe pump, wherein NaBH 4 The mass accounts for 0.35% of the total mixed solution;

[0018] 4) With NaBH 4 The addition of , the solution gradually turns gray from clear light green, and finally turns into a black opaque solution, and a large number of bubbles are generated. After NaBH 4 After adding the reagents, continue to sti...

Embodiment 2

[0021] A kind of nanometer α-Ni(OH) 2 The improved synthetic method, its preparation steps are as follows:

[0022] 1) Weigh 0.245g of NiCl with a balance 2 ﹒ 6H 2 O and 0.210g of PVP, add about 40mL of distilled water, and dissolve it under ultrasonic conditions to form a light green clear solution, and the ultrasonic use time is 1.2min;

[0023] 2) Transfer the clear solution to a three-necked flask, set the liquid crystal digital stirrer at a speed of 900r / min, stir the solution for 52min, and then let it stand for use;

[0024] 3) Take 40mL of configured NaBH 4 The solution was added dropwise to the solution in step 2) within 15min with a syringe pump, wherein NaBH 4 The mass accounts for 0.32% of the total mixed solution;

[0025] 4) With NaBH 4 The addition of , the solution gradually turns gray from clear light green, and finally turns into a black opaque solution, and a large number of bubbles are generated. After NaBH 4 After adding the reagents, continue to s...

Embodiment 3

[0028] A kind of nanometer α-Ni(OH) 2 The improved synthetic method, its preparation steps are as follows:

[0029] 1) Weigh 0.258g of NiCl with a balance 2 ﹒ 6H 2 O and 0.220g of PVP, add about 40mL of distilled water, and dissolve it under ultrasonic conditions to form a light green clear solution. The ultrasonic use time is 1.5min;

[0030] 2) Transfer the clear solution to a three-necked flask, set the liquid crystal digital stirrer at a speed of 1000r / min, stir the solution for 60min, and then let it stand for use;

[0031] 3) Take 40mL of configured NaBH 4 The solution was added dropwise to the solution in step 2) within 15min with a syringe pump, wherein NaBH 4 The mass accounts for 0.35% of the total mixed solution

[0032] 4) With NaBH 4 The addition of , the solution gradually turns gray from clear light green, and finally turns into a black opaque solution, and a large number of bubbles are generated. After NaBH 4 After adding the reagents, continue to stir ...

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Abstract

The invention discloses an improved synthesis method of nano alpha-Ni(OH)2. The method comprises following steps: firstly, NiCl2.6H2O and PVP are selected, distilled water is added, ultrasonic processing is performed for 1 min to dissolve NiCl2.6H2O and PVP, a light green clear solution is formed, the clear solution is then transferred into a three-necked flask and stirred, a newly prepared NaBH4solution is taken and dropwise added to the solution by an injection pump within 15 min, and with addition of NaBH4, the solution gradually becomes gray from clear light green and finally becomes a black non-transparent solution and a large quantity of bubbles are produced. After the reagent is added, stirring is continued for reaction, a black turbid solution is obtained after the reaction, the solution is subjected to centrifuging, water washing and alcohol washing three times respectively, a product is put in a drying oven for drying, and finally, the black powdery product is obtained.

Description

technical field [0001] The present invention relates to a kind of nano α-Ni(OH) 2 improved synthetic method. Background technique [0002] Nickel hydroxide is a green powder, hexagonal crystal system, generally α-Ni(OH) 2 、β-Ni(OH) 2 The difference between the two crystal forms lies in the difference in interlayer spacing and interlayer particles. β-Ni(OH) 2 The layer spacing is about 0.46~0.48nm, there is no H between layers 2 O and other ions intercalate, while α-Ni(OH) 2 The interlayer spacing can reach 0.7~0.8nm, and there is H between the layers 2 O and intercalation anion, α-Ni(OH) 2 The theoretical specific capacity is about β-Ni(OH) 2 1.5 times. Nickel-based nanomaterials have high specific surface area and chemical activity, as well as special magnetic, optical, electrical, and catalytic properties, and have become one of the hot spots in the development of new functional materials at home and abroad. α-Ni(OH) 2 The commonly used synthesis method is to us...

Claims

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Application Information

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IPC IPC(8): C01G53/04B82Y30/00
CPCB82Y30/00C01G53/04
Inventor 宋玉婷陈建兵鲍琪
Owner CHIZHOU UNIV
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