Preparation method of small-size iron disulfide nano hollow spheres

A technology of iron disulfide and hollow spheres is applied in the field of preparation of iron disulfide nanometer hollow spheres, which can solve the problems of difficulty in obtaining a small-sized hollow structure, and achieve the effects of simple method, easy availability of raw materials, and large specific surface area.

Active Publication Date: 2019-12-31
HEILONGJIANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the invention is to solve the existing FeS 2 The powder preparation process is difficult to obta

Method used

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  • Preparation method of small-size iron disulfide nano hollow spheres
  • Preparation method of small-size iron disulfide nano hollow spheres
  • Preparation method of small-size iron disulfide nano hollow spheres

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specific Embodiment approach 1

[0030] Specific embodiment one: this embodiment is a kind of preparation method of small-sized iron disulfide nano hollow spheres is completed according to the following steps:

[0031] One, iron stearate is dissolved in liquid paraffin, obtains iron stearate solution;

[0032] The massfraction of iron stearate in the ferric stearate solution described in step 1 is (1%~20%);

[0033] 2. Dissolving sulfur powder in oleic acid to obtain sulfur powder solution;

[0034] The mass fraction of sulfur powder in the sulfur powder solution described in step 2 is (1%~25%);

[0035] 3. Dispersing the surfactant into the liquid to obtain a surfactant solution;

[0036] The mass fraction of the surfactant in the surfactant solution described in step 3 is 0.1% to 3%;

[0037] 4. ①. Heat the iron stearate solution to 50°C to 80°C, then stir and react for 10min to 30min at a temperature of 50°C to 80°C and a stirring speed of 50r / min to 200r / min to obtain a reaction solution I;

[0038] ...

specific Embodiment approach 2

[0051] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the mass fraction of iron stearate in the iron stearate solution described in step one is (8%~10%). Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0052] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the mass fraction of sulfur powder in the sulfur powder solution described in step 2 is (8%-10%). Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of small-size iron disulfide nano hollow spheres, and aims to solve the problem that a small-size hollow structure is difficult to obtain by an existing FeS2 powder preparation process. The method comprises the following steps: 1, preparing an iron stearate solution; 2, preparing a sulfur powder solution; 3, preparing a surfactant solution; and 4, respectively heating and stirring the iron stearate solution, the sulfur powder solution and the surfactant solution for reaction, then mixing, finally carrying out hydrothermal reaction, centrifuging a hydrothermal reaction product, and cleaning a solid obtained by centrifugation to obtain the small-size iron disulfide hollow nanospheres. The size of the prepared hollow FeS2 ranges from 10nm to 200nm,and the hollow FeS2 has good crystallinity and dispersity. The method is suitable for preparing the small-size iron disulfide hollow nanospheres.

Description

technical field [0001] The invention relates to a preparation method of iron disulfide nanometer hollow spheres. Background technique [0002] FeS 2 It is the main component of pyrite and has diamagnetism. It is an inactive substance at room temperature and becomes active when the temperature rises. FeS 2 As an indirect bandgap semiconductor material, it is widely used in rubber, paper, textile, food, matches, batteries and other industries as well as agriculture. In recent years, due to FeS 2 Its special electronic structure can be used as an electrode material for lithium-ion batteries, giving full play to its advantages of high capacity, stable discharge and good compatibility with dielectrics. But the natural FeS 2 The material has many impurities, and the disadvantages of high purification process cost affect its application. Therefore, there is an urgent need for FeS with high purity, simple preparation and small size. 2 materials to meet the needs of practical ...

Claims

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Application Information

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IPC IPC(8): C01G49/12H01M4/58H01M10/0525B82Y40/00
CPCH01M4/5815H01M10/0525C01G49/12C01P2004/34C01P2004/64C01P2004/04C01P2002/72C01P2004/62Y02E60/10
Inventor 布和巴特尔张红晨齐海群张建交王春艳
Owner HEILONGJIANG INST OF TECH
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