FeS nano-material and preparation method thereof

A kind of nano material and nano technology, applied in the direction of nano technology, nano technology, nano technology for materials and surface science, etc., can solve the problems of cumbersome methods, low production capacity, high cost, etc., and achieve simple process, high yield, and reaction The effect of mild conditions

Inactive Publication Date: 2014-07-30
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is cumbersome, and requires nitrogen protection for calcination, and the process is cumbersome and the cost is high
[0005] Chinese patent 200910094242.0, "A Synthetic Method and Application of Active Ferrous Sulfide", published on August 19, 2009, reports a method that uses iron powder and sulfur powder as raw materials, then adds water to moisten, and heats and stirs in a reaction vessel Method for preparing ferrous sulfide, but the yield is only about 75%
In addition, the preparation of high-purity ferrous sulfide by microemulsion method, glow discharge method and other methods has also been reported in the literature, but due to high cost and low production capacity, it has not been widely promoted and applied.

Method used

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  • FeS nano-material and preparation method thereof
  • FeS nano-material and preparation method thereof
  • FeS nano-material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A FeS nanometer material has a one-dimensional sheet structure, the thickness of the sheet-like FeS is 30-100 nanometers, and the diameter is 0.2-5 microns.

[0032] A preparation method of FeS nanomaterials, comprising the following steps:

[0033] (1) Potassium ferrocyanide and sodium sulfide are dissolved in water to form a uniform solution;

[0034] (2) Put the above homogeneous solution into a polytetrafluoroethylene-lined autoclave, react under hydrothermal conditions at 200°C for 10 hours, and then cool naturally to room temperature;

[0035] (3) The product was cleaned by centrifugation with deionized water and ethanol, and vacuum-dried at 60° C. for 6 hours to constant weight to obtain a sheet-shaped FeS electrode material.

[0036] The concentration of potassium ferrocyanide in the step (1) is 0.05mol / L, the concentration of sodium sulfide is 0.05mol / L; the filling degree of the reactor in the step (2) is 80%.

[0037] Use Shimadzu XRD-6000 type X-ray powder...

Embodiment 2

[0040] A FeS nanometer material has a one-dimensional sheet structure, the thickness of the sheet-like FeS is 20-60 nanometers, and the diameter is 0.2-4.0 microns.

[0041] A preparation method of FeS nanomaterials, comprising the following steps:

[0042] (1) Dissolve ammonium ferrocyanide and sodium sulfide in water, add a certain amount of polyvinylpyrrolidone, and magnetically stir to form a uniform solution;

[0043] (2) Put the above homogeneous solution into a polytetrafluoroethylene-lined autoclave, react under hydrothermal conditions at 220°C for 3 hours, and then cool naturally to room temperature;

[0044] (3) The product was cleaned by centrifugation with deionized water and ethanol, and vacuum-dried at 40° C. for 8 hours to constant weight to obtain a sheet-shaped FeS electrode material.

[0045] In described step (1), the concentration of potassium ferrocyanide is 0.1mol / L, and the concentration of sodium sulfide is 0.1mol / L, and the concentration of polyvinylp...

Embodiment 3

[0047] A FeS nanometer material has a one-dimensional sheet structure, the thickness of the sheet-like FeS is 20-80 nanometers, and the diameter is 0.3-4.5 microns.

[0048] A preparation method for FeS nanomaterials, the steps comprising:

[0049] (1) Dissolve ferrous sulfate and sodium sulfide in water, add a certain amount of polyvinyl alcohol, and magnetically stir to form a uniform solution;

[0050] (2) Put the above homogeneous solution into a polytetrafluoroethylene-lined autoclave, react under hydrothermal conditions at 140°C for 10 hours, and then cool naturally to room temperature;

[0051] (3) The product was cleaned by centrifugation with deionized water and ethanol, and vacuum-dried at 30° C. for 10 hours to constant weight to obtain a sheet-shaped FeS electrode material.

[0052] In described step (1), the concentration of ferrous sulfate is 1.0mol / L, and the concentration of sodium sulfide is 1.0mol / L, and the concentration of polyvinyl alcohol is 4.0mol / L; In...

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Abstract

The invention discloses a FeS nano-material and a preparation method thereof. The FeS nano-material has a sheet structure, wherein the thickness of a sheet is 20-100 nanometers, and the length of the sheet is 0.2-5 microns. The preparation method comprises the steps of (1) dissolving potassium ferrocyanide and sodium sulfide into water, then adding a surfactant, and uniformly mixing; (2) reacting for 3-50 hours under hydrothermal conditions at 140-220 DEG C, and naturally cooling to room temperature; (3) centrifuging, washing and drying an obtained product to obtain a sheet FeS capacitor electrode material. The FeS nano-material disclosed by the invention is simple and efficient, and is suitable for large-scale production; a prepared super-capacitor material has a relatively large specific surface area, relatively high specific capacitance and potential application values.

Description

technical field [0001] The invention relates to a method for preparing micro-nano materials, in particular to a method for preparing FeS nano-materials, and belongs to the technical field of new material preparation. Background technique [0002] As an important functional material, ferrous sulfide has a structure similar to graphene, has good plasticity and lubricating properties, and can be used in the manufacture of solid lubricants; it has good activity and can be used in industrial sewage treatment and other fields; in addition , Ferrous sulfide is also used as an electrode material for secondary molten salt lithium batteries. Therefore, the controllable preparation and large-scale production of ferrous sulfide have attracted extensive attention. [0003] The preparation of ferrous sulfide mainly adopts high temperature direct synthesis method and liquid phase synthesis method. For example: Wang Yunru ("Journal of Wuhan Institute of Chemical Technology", No. 5, 2005) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/12B82Y40/00B82Y30/00
Inventor 吴孔林张蓓孙健魏先文李祥子
Owner ANHUI NORMAL UNIV
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