Edging cube-shaped cobalt-iron prussian blue nanometer material and preparation method thereof

A technology of Prussian blue and nanomaterials is applied in the field of rimmed cubic cobalt-iron Prussian blue nanomaterials and their preparation, which can solve problems such as difficulty in preparation, and achieve fewer synthesis steps, simple operation methods and broad development prospects. and the effect of the actual application space

Inactive Publication Date: 2017-08-08
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to prepare raw materials by ordinary liquid-phase precipitation method to prepare Prussian blue-like materials with uniform appearance and good dispersion. This is a major problem in the synthesis of Prussian blue-like compounds.

Method used

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  • Edging cube-shaped cobalt-iron prussian blue nanometer material and preparation method thereof
  • Edging cube-shaped cobalt-iron prussian blue nanometer material and preparation method thereof
  • Edging cube-shaped cobalt-iron prussian blue nanometer material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A method for preparing cobalt-iron Prussian blue nanomaterials in the shape of a rimmed cube, the specific steps are as follows:

[0036] (1) Take a certain amount of surfactant SDS and dissolve it in 50mL aqueous solution so that the concentration of the surfactant is 12mg / mL. After magnetic stirring and dissolving, put sodium citrate in turn to make the concentration 0.15mol / L, Then add cobalt nitrate, so that Co 2+ The concentration is 0.1mol / L, after stirring evenly, it is made into solution A;

[0037] (2) Take a certain amount of potassium ferricyanide solid and dissolve it in 50mL aqueous solution, so that K 3 [Fe(CN) 6 ] The concentration of 0.04mol / L is made into solution B;

[0038] (3) Add solution A drop by drop to solution B while stirring, and continue stirring for 15 minutes after the dropwise addition;

[0039] (4) leave the reaction solution to stand and age for 12h;

[0040] (5) Centrifuge after the reaction, wash the sample three times with deion...

Embodiment 2

[0043] A method for preparing cobalt-iron Prussian blue nanomaterials in the shape of a rimmed cube, the specific steps are as follows:

[0044] (1) Take a certain amount of surfactant PVP and pour it into 50mL aqueous solution, so that the concentration of surfactant is 10mg / mL, after magnetic stirring and dissolving, put sodium citrate in turn to make its concentration 0.15mol / L, Then add cobalt acetate tetrahydrate, so that Co 2+ The concentration is 0.1mol / L, after stirring evenly, it is made into solution A;

[0045] (2) Take a certain amount of potassium ferricyanide solid and dissolve it in aqueous solution, so that K 3 [Fe(CN) 6 ] The concentration of 0.04mol / L is made into solution B;

[0046] (3) Add solution A drop by drop to solution B while stirring, and continue stirring for 15 minutes after the dropwise addition;

[0047](4) Standing and aging the reaction solution (12h, 24h, 36h);

[0048] (5) Centrifuge after the reaction, wash the sample three times with...

Embodiment 3

[0051] A method for preparing cobalt-iron Prussian blue nanomaterials in the shape of a rimmed cube, the specific steps are as follows:

[0052] (1) Get a certain amount of surfactant SBDS and pour it into 60mL aqueous solution, so that the concentration of surfactant is 5mg / mL. After magnetic stirring and dissolving, put sodium citrate in turn to make its concentration 0.1mol / L, Then add cobalt chloride, making Co 2+ The concentration is 0.1mol / L, after stirring evenly, it is made into solution A;

[0053] (2) Take a certain amount of potassium ferricyanide solid and dissolve it in 40mL aqueous solution, so that K 3 [Fe(CN) 6 ] The concentration of 0.03mol / L is made into solution B;

[0054] (3) Add solution A drop by drop to solution B while stirring, and continue stirring for 15 minutes after the dropwise addition;

[0055] (4) The reaction solution is left to age for 20h;

[0056] (5) Centrifuge after the reaction, wash the sample three times with deionized water and ...

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PUM

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Abstract

The invention relates to an edging cube-shaped cobalt-iron prussian blue nanometer material and a preparation method thereof. The preparation method comprises the following steps of firstly, stirring and dissolving a surfactant into water under the magnetic action; after dissolving, sequentially adding sodium citrate and cobalt salt to prepare a solution A; then, dissolving potassium ferricyanide solid into water to prepare a solution B; gradually dripping the solution A into the solution B while stirring; after dripping, continuing to stir for a period of time; standing and aging the reaction liquid for a period of time, naturally cooling, centrifuging, washing, and drying, so as to obtain the edging cube-shaped cobalt-iron prussian blue nanometer material. Compared with the prior art, the synthesizing method has the advantages that by changing the conditions, the edging cube-shaped cobalt-iron prussian blue nanometer material is prepared; the morphology and structure of the material are not reported in the literature; the preparation is simple, the implementing is easy, and the large-batch preparation effect is realized.

Description

technical field [0001] The invention belongs to the technical field of inorganic nano-materials, and in particular relates to a cobalt-iron Prussian blue nano-material in the shape of a rimmed cube and a preparation method thereof. Background technique [0002] Prussian blue (Prussian blue, PB) is a common blue dye, composed of hydrated iron ion [Fe(H 2 0) 6 ] 3+ and [Fe(CN) 6 ] 4- Mixed to form a blue precipitate, with a unique three-dimensional network structure, unique in the inorganic structure, similar to cross-linked organic polymers, excellent structural stability, and high electrochemical reversibility, can be used for electron transfer It is also widely used because of its good chemical stability, photoelectric properties, electrocatalytic properties, simple and convenient preparation, and low cost. [0003] As a continuation of the research on Prussian blue, a large number of Prussian blue-like compounds are obtained by replacing the iron element with other tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01C3/12
CPCC01C3/12C01P2002/72C01P2002/74C01P2004/03C01P2004/04C01P2004/38C01P2004/52C01P2004/62
Inventor 陈云宋芳明吴庆生
Owner TONGJI UNIV
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