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Beta-nickel hydroxide/iron oxide ultrathin nano-sheet and preparation method thereof

A technology of iron oxide nanometer and nickel hydroxide, which is applied in the field of nanomaterials, can solve the problems of complexity and difficult to control film thickness, and achieve the effect of uniform size distribution, easy control and simplified process operation.

Active Publication Date: 2018-10-19
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is more complicated, and the thickness of the film is difficult to control

Method used

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  • Beta-nickel hydroxide/iron oxide ultrathin nano-sheet and preparation method thereof
  • Beta-nickel hydroxide/iron oxide ultrathin nano-sheet and preparation method thereof
  • Beta-nickel hydroxide/iron oxide ultrathin nano-sheet and preparation method thereof

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Embodiment 1

[0034] A preparation method of β-nickel hydroxide / iron oxide ultrathin nanosheets, comprising the following steps:

[0035] S1), the soluble nickel salt NiSO of 1.6mmol 4 ·6H 2 O was dissolved in 20mL of deionized water to form a water-soluble nickel salt solution, then 0.0100g of ferrihydrite was added to the nickel sulfate aqueous solution, and stirred for 0.5h, so that the ferrihydrite could fully absorb divalent nickel ions;

[0036] S2), then dissolving 3.2 mmol of sodium hydroxide in 20 mL of deionized water to form an aqueous sodium hydroxide solution, then adding the aqueous sodium hydroxide solution to the mixed solution in step S1), stirring well to obtain a precursor solution, And adjust the pH value of the mixed solution by sodium hydroxide aqueous solution;

[0037] S3), heating the precursor solution to 180° C., and performing a hydrothermal reaction for 9 hours;

[0038] S4), naturally cool to room temperature after the reaction, centrifuge the cooled sample,...

Embodiment 2

[0042] A preparation method of β-nickel hydroxide / iron oxide ultrathin nanosheets, comprising the following steps:

[0043] S1), the soluble nickel salt NiSO of 1.6mmol 4 ·6H 2 O was dissolved in 20mL of deionized water to form a water-soluble nickel salt solution, then 0.0100g of ferrihydrite was added to the nickel sulfate aqueous solution, and stirred for 0.5h, so that the ferrihydrite could fully absorb divalent nickel ions;

[0044] S2), then dissolving 1.6 mmol of sodium hydroxide in 20 mL of deionized water to form an aqueous sodium hydroxide solution, then adding the aqueous sodium hydroxide solution to the mixed solution in step S1), and fully stirring for 10 min to obtain a precursor solution, And adjust the pH value of the mixed solution by sodium hydroxide aqueous solution;

[0045] S3), heating the precursor solution to 120° C., performing a hydrothermal reaction for 8 hours, and obtaining β-nickel hydroxide / iron oxide nanosheets;

[0046] S4), naturally cool t...

Embodiment 3

[0049] A preparation method of β-nickel hydroxide / iron oxide ultrathin nanosheets, comprising the following steps:

[0050] S1), the soluble nickel salt NiSO of 1.6mmol 4 ·6H 2 O was dissolved in 20mL of deionized water to form a water-soluble nickel salt solution, then 0.0100g of ferrihydrite was added to the nickel sulfate aqueous solution, and stirred for 0.5h, so that the ferrihydrite could fully absorb divalent nickel ions;

[0051] S2), then dissolving 3.2 mmol of sodium hydroxide in 20 mL of deionized water to form an aqueous sodium hydroxide solution, then adding the aqueous sodium hydroxide solution to the mixed solution in step S1), and fully stirring for 10 min to obtain a precursor solution, And adjust the pH value of the mixed solution by sodium hydroxide aqueous solution;

[0052] S3), heating the precursor solution to 120° C., performing a hydrothermal reaction for 8 hours, and obtaining β-nickel hydroxide / iron oxide nanosheets;

[0053] S4), naturally cool t...

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Abstract

The invention relates to a beta-nickel hydroxide / iron oxide ultrathin nano-sheet and a preparation method thereof. A phase of the nano-sheet is beta-nickel hydroxide; the thickness of the nano-sheet is 10 to 20 nm and the diameter of the nano-sheet is 50 to 150 nm; the preparation method comprises the following steps: mixing a water solution of soluble nickel salt and a sodium hydroxide water solution, and taking ferrihydrite as an activating agent; sufficiently and uniformly stirring to obtain a precursor solution; raising the temperature of the precursor solution and carrying out hydrothermal reaction; after the reaction, obtaining a product, i.e. the beta-nickel hydroxide nano-sheet. The beta-nickel hydroxide / iron oxide ultrathin nano-sheet is prepared through a one-step hydrothermal reaction method and no organic solvent is needed; the preparation method is simple, has the advantages of strong repeatability, high yield and low cost and is environmentally friendly; furthermore, thenano-sheet is of a beta phase, and a nickel hydroxide ultrathin nano-sheet with a relatively good crystal form, good stability, high crystallization degree, uniform shape and relatively uniform size distribution is obtained through strictly controlling different ratios of a nickel source, an alkali source and an iron source, and reaction temperature.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a β-nickel hydroxide / iron oxide ultrathin nanosheet and a preparation method thereof. Background technique [0002] In recent years, due to the increasing demand for nanomaterials, the research and development of nanomaterials has developed rapidly, and they are widely used in coatings, traditional materials, electronic equipment, medical equipment and other fields. It is worth mentioning that due to its unique structure and size, composite nanomaterials are different from general macroscopic materials in terms of electrical, mechanical, thermal, optical and magnetic properties, and may also have special properties and properties that the original components do not have. Features. [0003] The oxyhydroxides of transition metals are important mineral materials, which have a large number of applications, especially in catalytic and electrocatalytic reactions. Nano-nickel hy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04C01G49/06B82Y30/00B82Y40/00B01J23/755
CPCB82Y30/00B82Y40/00C01G49/06C01G53/04B01J23/755C01P2004/03C01P2002/72C01P2006/40C01P2004/64C01P2004/62B01J35/393B01J35/23B01J35/33
Inventor 张弛谢卓鸿张忠华曾庆光付兴杰程惠
Owner WUYI UNIV
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