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Preparation method for FeS2 pyrite microballoon sphere and application thereof

A technology of pyrite and microspheres, applied in the field of nanomaterials, can solve the problems of complex process, uneven morphology, impure product phase, etc., and achieve the effect of simple process, excellent electrical and optical properties, and good monodispersity.

Inactive Publication Date: 2014-07-30
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a cubic FeS 2 The preparation method of pyrite microspheres solves the technical problem that the existing FeS 2 The preparation method of pyrite requires high-temperature treatment, the process is complicated, and the obtained product is impure in phase and uneven in shape, which limits its application. The present invention further provides the use of the product obtained in the preparation method as a counter electrode material for quantum dot-sensitized solar cells. application

Method used

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  • Preparation method for FeS2 pyrite microballoon sphere and application thereof
  • Preparation method for FeS2 pyrite microballoon sphere and application thereof
  • Preparation method for FeS2 pyrite microballoon sphere and application thereof

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Experimental program
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Embodiment 1～4

[0031] This embodiment prepares FeS according to the following steps 2 Pyrite microspheres:

[0032] a. Weigh or measure each raw material according to Table 1: S powder is selected from (Shanghai Runjie Chemical Reagent Co., Ltd.), analytically pure (>99.9%); FeSO 4 ·7H 2 O is selected from (Shanghai Runjie Chemical Reagent Co., Ltd.), analytically pure (>99.5%); triethylene glycol is selected from (Shanghai Runjie Chemical Reagent Co., Ltd.), chemically pure (>98%);

[0033] Table 1

[0034] Example

S powder

FeSO 4 ·7H 2 o

triethylene glycol

temperature

time

1

1.25mmol

0.5mmol

40ml

200℃

4h

2

1.25mmol

0.5mmol

40ml

200℃

6h

3

1.25mmol

0.5mmol

40ml

200℃

10h

4

1.25mmol

0.5mmol

40ml

200℃

20h

[0035] b. FeSO 4 ·7H 2 O was dissolved in triethylene glycol, and 1.25 mmol of sulfur powder was added, magnetically stirred for 10 minut...

Embodiment 5

[0039] This embodiment prepares FeS according to the following steps 2 Pyrite microspheres:

[0040] a. Weigh or measure each raw material according to Table 2: wherein S powder is selected from (Shanghai Runjie Chemical Reagent Co., Ltd.), analytically pure (>99.9%); FeCl 2 4H 2 O is selected from (Shanghai Runjie Chemical Reagent Co., Ltd.), analytically pure (>99.5%); triethylene glycol is selected from (Shanghai Runjie Chemical Reagent Co., Ltd.), chemically pure (>98%);

[0041] Table 2

[0042] Example

S powder

FeCl 2 4H 2 o

triethylene glycol

temperature

time

5

1.25mmol

0.5mmol

40ml

170℃

10h

[0043] b. FeCl 2 4H 2 O was dissolved in triethylene glycol, and 1.25 mmol of sulfur powder was added, magnetically stirred for 10 minutes and then ultrasonically treated for 20 minutes to fully disperse the sulfur powder to obtain a mixed solution.

[0044] c. Then transfer the obtained mixed solution to a...

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Abstract

The invention discloses a preparation method for an FeS2 pyrite microballoon sphere and the application thereof. The preparation method for the FeS2 pyrite microballoon sphere is characterized in that an iron source is dissolved in triethylene glycol, and then powdered sulfur is added and stirred to be dissolved to obtain mixed solution; the mixed solution is reacted for 4-20h at the temperature of 170-220DEG C to obtain product solution; the product solution is centrifuged, cleaned and dried to obtain the target product FeS2 pyrite microballoon sphere. The preparation method disclosed by the invention has the advantages of simple technology and convenience in operation, and the product has stable performance, good uniformity, high phase purity and the like. The iron source and the reaction time are changed to improve the degree of crystallinity of the FeS2 pyrite microballoon sphere, and the size and the morphology of the FeS2 pyrite microballoon sphere are regulated and controlled. The FeS2 pyrite shows extremely outstanding electrocatalytic activity for the catalytic regeneration of electrolyte in a semiconductor sensitized solar cell and can be used as the counter electrode material of the sensitized solar cell by replacing noble metal Pt, and therefore the cell is caused to have higher photoelectric conversion efficiency.

Description

technical field [0001] The present invention relates to a kind of FeS 2 The invention discloses a preparation method of pyrite microspheres, belonging to the technical field of nanometer materials. Background technique [0002] In recent years, due to their excellent electrical and optical properties, nanostructured materials have gradually become a research hotspot in the field of advanced materials and functional materials at home and abroad. Nanostructured solar cells are emerging third-generation solar cells, which have the advantages of high theoretical efficiency, simple manufacturing process, and low cost. Among them, due to the multi-exciton effect of nanomaterials, the theoretical photoelectric conversion efficiency of quantum dot-sensitized solar cells is as high as 44%, which is a nanostructure battery device with broad application prospects. The quantum dot sensitized solar cell consists of three parts: a working electrode, an electrolyte solution and a counter...

Claims

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Application Information

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IPC IPC(8): B82B3/00H01G9/042B82Y40/00
Inventor 许俊孙联领谢超罗林保史正添
Owner HEFEI UNIV OF TECH
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