A kind of preparation method of cobalt oxalate nanowire

A technology of cobalt oxalate nanometer and oxalic acid is applied in the preparation of carboxylates, carboxylates, organic compounds, etc., and can solve the problems of complicated operation, low product purity, multiple reaction steps, etc., and achieve simple operation steps. , the effect of high product purity and high application value

Active Publication Date: 2020-03-24
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods often have their own limitations. Most of them require multiple reaction steps, harsh conditions, complicated operation, relatively high cost, difficult to control the size and shape of the product, poor distribution uniformity, low yield and product purity.
For example, in the preparation process of cobalt oxalate nanowires, if the reaction conditions are not well controlled, it is easy to cause the prepared nanowire system to be easily mixed with rod-shaped and nano-particle-shaped cobalt oxalate, which in turn leads to low product purity, low yield, and easy occurrence of particles. Agglomeration phenomenon, which in turn leads to the problem of poor dispersion

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  • A kind of preparation method of cobalt oxalate nanowire
  • A kind of preparation method of cobalt oxalate nanowire
  • A kind of preparation method of cobalt oxalate nanowire

Examples

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Embodiment 1

[0027] A preparation method of cobalt oxalate nanowires, comprising the following steps:

[0028] 1) Weigh 0.291g cobalt nitrate hexahydrate and 0.05g Span-40, dissolve in a mixture of 25ml ethylene glycol and 25ml deionized water to form solution A; weigh 0.5g oxalic acid and dissolve it in 25ml ethylene glycol and Prepare solution B in a mixture composed of 25ml deionized water;

[0029] 2) Mix solutions A and B for water bath reaction, and react at room temperature for 20 hours to obtain a suspension containing cobalt oxalate nanowires;

[0030] 3) After the water bath reaction, the suspension is centrifuged, and then the precipitate is washed with deionized water and absolute ethanol;

[0031] 4) The precipitate was dried in a vacuum oven at 50° C. for 5 hours to finally obtain 0.145 g of pink cobalt oxalate powder with a yield of 98.6%.

[0032] The scanning electron microscope picture and the XRD picture of the cobalt oxalate nanowire prepared in the present embodiment...

Embodiment 2

[0034] A preparation method of cobalt oxalate nanowires, comprising the following steps:

[0035] 1) Weigh 0.291g cobalt nitrate hexahydrate and 0.05g Span-40, dissolve in a mixture of 25ml ethylene glycol and 25ml deionized water to form solution A; weigh 0.25g oxalic acid and dissolve it in 25ml ethylene glycol and Prepare solution B in a mixture composed of 25ml deionized water;

[0036] 2) Mix solutions A and B to react in a water bath, and react at 20° C. for 21 hours to prepare a suspension containing cobalt oxalate nanowires;

[0037] 3) After the water bath reaction, the suspension is centrifuged, and then the precipitate is washed with deionized water and absolute ethanol;

[0038] 4) The precipitate was dried in a vacuum drying oven at 45° C. for 5.5 hours to finally obtain 0.143 g of pink cobalt oxalate powder with a yield of 97.3%.

[0039] The scanning electron microscope picture of the cobalt oxalate nanowire prepared in the present embodiment is as follows i...

Embodiment 3

[0041] A preparation method of cobalt oxalate nanowires, comprising the following steps:

[0042] 1) Weigh 0.291g of cobalt nitrate hexahydrate and 0.05g of Span-40, dissolve in a mixture of 25ml of ethylene glycol and 25ml of deionized water to form solution A; weigh 1g of oxalic acid and dissolve in 25ml of ethylene glycol and 25ml of deionized water Prepare solution B in the mixed solution composed of deionized water;

[0043] 2) Mix solutions A and B for water bath reaction, and react at 24°C for 20 hours to prepare a suspension containing cobalt oxalate nanowires;

[0044] 3) After the water bath reaction, the suspension is centrifuged, and then the precipitate is washed with deionized water and absolute ethanol;

[0045] 4) The precipitate was dried in a vacuum oven at 40° C. for 6 hours to finally obtain 0.144 g of pink cobalt oxalate powder with a yield of 97.9%.

[0046] The scanning electron microscope picture of the cobalt oxalate nanowire prepared in the present ...

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Abstract

The invention relates to a method for preparing cobalt oxalate nano-wires. The method includes steps of 1), dissolving cobalt nitrate hexahydrate and surfactants in solvents to prepare solution A and dissolving oxalic acid in solvents to prepare solution B; 2), mixing the solution A and the solution B with each other and carrying out water bath reaction. The method has the advantages that the method is easy to implement and high in yield, and cobalt oxalate nano-wire products with high purity, regular morphology and good distribution uniformity can be prepared by the aid of the method.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for preparing cobalt oxalate nanowires. Background technique [0002] One-dimensional nanomaterials such as nanorods, nanowires, and nanotubes have been widely used in the fields of catalysis, luminescent materials, magnetic materials, semiconductor materials, and nanodevices due to their unique optical, electrical, magnetic, and mechanical properties. aroused extensive research interest. Since the properties of nanomaterials depend on the structure, shape and size of nanoparticles, how to control their structure, shape and size has become an important problem for scientists. [0003] Nano-cobalt oxalate is an important raw material for synthesizing nano-cobalt and nano-cobalt oxide powders, and is currently a widely used oxalate. Cobalt oxalate nanowires are important raw materials for preparing nano-cobalt powder and nano-cobalt oxide pow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C51/41C07C55/07B82Y40/00
CPCB82Y40/00C07C51/412C07C55/07
Inventor 吴会杰
Owner CHONGQING UNIV OF ARTS & SCI
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