Nickel ferrite nanosheet as well as preparation method and application thereof

A technology of nickel ferrite and nanosheets, which is applied in the direction of nanotechnology, chemical instruments and methods, nickel compounds, etc., can solve the problems of limiting the application of catalyst supports and the single shape of nickel ferrite, and achieve broad industrial production prospects and practical applications value, shape integrity, and the effect of optimized process parameters

Active Publication Date: 2018-09-04
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above method can successfully prepare nickel ferrite, the morphology of the synthesized nickel ferrite is single and granular, which limits its application as a catalyst carrier.

Method used

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  • Nickel ferrite nanosheet as well as preparation method and application thereof
  • Nickel ferrite nanosheet as well as preparation method and application thereof
  • Nickel ferrite nanosheet as well as preparation method and application thereof

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preparation example Construction

[0042] In view of this, in a specific embodiment of the present invention, a kind of preparation method of nickel ferrite nanosheet is provided, comprising the following steps:

[0043] S1. Add iron salt and nickel salt to water and mix evenly;

[0044] S2. Add a precipitating agent to the solution obtained in step S1. and mix evenly;

[0045] S3. The solution obtained in step S2. is subjected to a hydrothermal reaction, and the product is purified to obtain a nickel ferrite precursor;

[0046] S4. Perform high-temperature heat treatment on the nickel ferrite precursor obtained in step S3. to obtain nickel ferrite nanosheets.

[0047] The possible principle of the method of the present invention is: the precipitation agent reacts at a certain temperature to generate OH - ,OH - It reacts with iron salt and nickel salt under certain conditions to form a flaky nickel ferrite precursor, and finally generates nickel ferrite nanosheets after high temperature heat treatment.

[0...

Embodiment 1

[0071] (1) Take by weighing 2.5mmol nickel chloride hexahydrate and 5mmol ferric chloride hexahydrate, join in 50ml deionized water, mix and stir for 30 minutes;

[0072] (2) Add 20mmol sodium acetate to the mixed solution, and sonicate for 30 minutes;

[0073] (3) Move the ultrasonically treated liquid into the reactor, and heat it at 180° C. for 12 hours to carry out the hydrothermal reaction;

[0074] (4) The product obtained after the hydrothermal reaction is completed is subjected to suction filtration, and the obtained substance is washed 3-4 times with deionized water;

[0075] (5) drying the obtained product at 60° C. for 10 h;

[0076] (6) Treat the dried product in a muffle furnace at 300° C. for 2 hours to obtain nickel ferrite powder.

[0077] The scanning electron micrograph of the nickel ferrite nanosheet prepared by the present embodiment is as follows figure 1 As shown, the transmission electron microscope picture is shown as figure 2 As shown, the X-ray d...

Embodiment 2

[0079] (1) Weigh 2.5mmo nickel chloride hexahydrate and 5mmol ferric chloride hexahydrate, add to 100ml deionized water, mix and stir for 30 minutes;

[0080] (2) Add 30mmol urea to the mixed solution, and ultrasonically treat it for 30 minutes;

[0081] (3) Move the ultrasonically treated liquid into the reactor, and heat it at 200° C. for 10 hours to carry out the hydrothermal reaction;

[0082] (4) The product obtained after the hydrothermal reaction is completed is subjected to suction filtration, and the obtained substance is washed 3-4 times with deionized water;

[0083] (5) drying the obtained product at 60° C. for 10 h;

[0084] (6) Treat the dried product in a muffle furnace at 300° C. for 2 hours to obtain nickel ferrite powder.

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Abstract

The invention provides a nickel ferrite nanosheet as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, adding ferric salt and nickel saltto water, uniformly mixing; S2, adding a precipitator to solution obtained in the step S1, uniformly mixing; S3, performing hydrothermal reaction on solution obtained in the step S2, purifying a product to obtain a nickel ferrite precursor; and S4, performing high temperature thermal treatment on the nickel ferrite precursor obtained in the step S3 to obtain the nickel ferrite nanosheet. The provided preparation method is safe and stable, pollution-free, easy to obtain raw materials, easy to operate, simple in equipment, and higher in yield, and the prepared nickel ferrite nanosheet is largerin dimension, a sheet layer is thinner, and the appearance is integrated, so the nickel ferrite nanosheet has an extensive application prospect in electromagnetic materials, catalysts and catalyst carriers.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic non-metallic materials, and in particular relates to a nickel ferrite nanosheet and its preparation method and application. Background technique [0002] Nickel ferrite is a compound of iron, nickel and oxygen, with a spinel structure. Due to its excellent electrochemical performance, it is very in line with the requirements of lithium battery anode materials, so it has a very wide application in lithium battery electrode materials; at the same time, nickel ferrite is a commonly used soft magnetic material and can be used as a magnetic head material , moment magnetic materials, microwave absorbing materials, etc., can be widely used in the electronics industry; in addition, nickel ferrite is also a widely used catalyst carrier, and it can also be used as a catalyst for certain reactions, such as decomposing carbon dioxide into carbon and oxygen. [0003] At present, the preparat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/00B82Y40/00B01J35/02B01J32/00B01J23/755
CPCB01J23/002B01J23/755B01J35/02B82Y40/00C01G53/00C01P2002/72C01P2004/03C01P2004/04C01P2004/24
Inventor 毕见强高希成王伟礼孙晓宁陈亚飞孙国勋冷明哲郝旭霞王璐颜伟康
Owner SHANDONG UNIV
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