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A preparation method of nano antimony sulfide particles under controllable conditions

An antimony sulfide and nanotechnology, which is applied in the energy field, can solve the problems of cumbersome preparation of nanometer antimony sulfide particles, and achieves the effect of being suitable for large-scale popularization and application, simple operation and good economy.

Inactive Publication Date: 2017-11-10
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the preparation of the current nano antimony sulfide particles is relatively cumbersome, and the present invention attempts to provide a simple, fast and brand-new preparation method of nano antimony sulfide particles

Method used

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  • A preparation method of nano antimony sulfide particles under controllable conditions
  • A preparation method of nano antimony sulfide particles under controllable conditions
  • A preparation method of nano antimony sulfide particles under controllable conditions

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preparation example Construction

[0027] A flow chart of the method for preparing nanometer antimony sulfide particles under controllable conditions is shown in the attached figure 1 , consisting of four steps of dissolution, temperature control, precipitation and cleaning. Its specific steps include:

[0028] 1) using an alkaline solution to dissolve the antimony sulfide mineral particles;

[0029] 2) After adding a surfactant and a specific solvent, store it at a certain temperature and wait for the solid to precipitate;

[0030] 3) The precipitated solid is soaked and cleaned with deionized water or acetone, and then centrifugally dried or calcined at a high temperature in a muffle furnace under the protection of nitrogen;

[0031] In the present invention, a surfactant and a specific solution need to be added before the temperature control process to control the size and shape of the precipitated particles. After the specific solvent is added to the solution, it can not only precipitate the nano antimon...

Embodiment 1

[0052] 1) Weigh 1.2 kg of sodium hydroxide, dissolve in 20 kg of deionized water, and stir until completely dissolved;

[0053] 2) Weigh 2 kg of stibnite powder and dissolve it in the solution, add 50 kg of deionized water, stir for half an hour, and filter out the insoluble matter;

[0054] 3) Weigh 50 grams of polyethylene glycol and 2 kilograms of DMF, add them into the solution, mix well, and keep warm at 60° C. for 4 hours;

[0055] 4) Centrifuge the solution, take the precipitated solid particles, wash and soak them alternately with deionized water and acetone, and repeat the centrifugation step;

[0056] 5) Dry the solid obtained by centrifugation at 60°C, weigh 0.8574 kg, and carry out subsequent characterization experiments, and the results are as follows image 3 shown.

Embodiment 2

[0058] 1) Weigh 0.6 kg of sodium hydroxide, dissolve in 10 kg of deionized water, and stir until completely dissolved;

[0059] 2) Weigh 1 kg of stibnite powder and dissolve it in the solution, add 25 kg of deionized water, stir for half an hour, and filter out the insoluble matter;

[0060] 3) Weigh 25 grams of cetyltrimethylammonium bromide and 1 kilogram of DMF, add them into the solution, mix well, and keep warm at 80° C. for 4 hours;

[0061] 4) Centrifuge the solution, take the precipitated solid particles, wash and soak them alternately with deionized water and acetone, and repeat the centrifugation step;

[0062] 5) Dry the solid obtained by centrifugation at 60°C, weigh 0.4568 kg, and carry out subsequent characterization experiments, and the results are as follows Figure 4 , Figure 10 shown.

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Abstract

The invention discloses a preparation method of antimony sulfide nanoparticles under controllable conditions. The preparation method mainly comprises the following steps: dissolving, temperature control, precipitation, and washing or calcination. An alkaline solution is used in the dissolving step to dissolve antimony sulfide powder; a surfactant and a DMF solution are added, and then the obtained solution is stored at a specific temperature under a specific pressure to wait for solid precipitation; and precipitated solid is immersed and cleaned with deionized water or acetone, the obtained solid is centrifuged and dried, or undergoes high temperature calcination in a muffle furnace under the protection of nitrogen. Compared with present nanometer antimony sulfide preparation methods, the preparation method disclosed in the invention has the advantages of simplicity in operation, no synthesis, common used reagents, good economic property, and suitableness for large-scale promotion and application.

Description

technical field [0001] The invention belongs to the field of energy, and in particular relates to a method for preparing nanometer antimony sulfide particles under controllable conditions. Background technique [0002] Antimony sulfide has excellent photoelectric properties and high thermoelectric power, and has broad application prospects in dye-sensitized solar cells. At present, the most widely used solar cells are still silicon monocrystalline cells, which are cheap and easy to manufacture, but have low conversion efficiency and low energy utilization rate, which cannot meet people's demand for new energy. The photoelectric conversion efficiency of dye-sensitized solar cells made of nano-antimony sulfide is much higher than that of ordinary solar cells, and my country is a country with a large amount of antimony resources, which is conducive to the promotion of the use of solar energy. [0003] However, the preparation of nanometer antimony sulfide particles is cumberso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G30/00B82Y40/00
CPCC01G30/008C01P2002/72C01P2004/03C01P2004/16C01P2004/24C01P2004/32C01P2004/64
Inventor 叶瑛贾思齐周煌烽夏天陈雪刚张平萍
Owner ZHEJIANG UNIV
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