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Copper sulphide-doped cubic crystal zinc sulfide material and preparation method thereof

A technology of cubic crystal and zinc sulfide, applied in the field of high-efficiency infrared transmission materials, can solve the problems of crystal transformation, affecting the infrared performance of materials, reducing the infrared transmittance of materials, etc., and achieves low cost, easy reaction and simple process Effect

Inactive Publication Date: 2013-11-06
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, during the hot pressing process (the temperature range is 770-960 ° C), the ZnS raw material often undergoes crystal transformation, resulting in a small amount of hexagonal ZnS impurities in the obtained hot-pressed polycrystalline ZnS material, which often become the center of scattering. Reduce the infrared transmittance of the material and affect the infrared performance of the material

Method used

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  • Copper sulphide-doped cubic crystal zinc sulfide material and preparation method thereof
  • Copper sulphide-doped cubic crystal zinc sulfide material and preparation method thereof
  • Copper sulphide-doped cubic crystal zinc sulfide material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0028] Step A: take by weighing 44.624g (150mmol) Zn (NO 3 ) 2 ·6H 2 O, 0.181g (0.75mmol) Cu(NO 3 ) 2 ·3H 2 O was dissolved in 150 mL deionized water to prepare a mixed salt solution.

[0029] Step B: Weigh 79.259g (330mmol) Na 2 S·9H 2 O was dissolved in 150 mL of deionized water to prepare a sodium sulfide solution.

[0030] Step C: the mixed salt solution prepared in step A and the sodium sulfide solution prepared in step B are mixed in a volume ratio of 1:1, and the mixture is mixed at 10.0mL min -1 The dropping rate was added to the rotating liquid film reactor to nucleate rapidly, and the obtained slurry was crystallized at 200 °C for 24 hours, filtered, washed, and dried to obtain a ZnS / CuS sample with a CuS doping amount of 0.50wt%.

Embodiment 2

[0032] Step A: Weigh 29.749g (100mmol) Zn(NO 3 ) 2·6H 2 O, 0.242g (1mmol) Cu(NO 3 ) 2 ·3H 2 O was dissolved in 100 mL deionized water to prepare a mixed salt solution.

[0033] Step B: Weigh 52.840g (220mmol) Na 2 S·9H 2 O was dissolved in 100 mL of deionized water to prepare a sodium sulfide solution.

[0034] Step C: the mixed salt solution prepared in step A and the sodium sulfide solution prepared in step B are mixed in a volume ratio of 1:1, and the mixture is mixed at 10.0mL min -1 The dropping rate was added to the rotating liquid film reactor to nucleate rapidly, and the resulting slurry was crystallized at 200 °C for 24 hours, filtered, washed, and dried to obtain a ZnS / CuS sample with a CuS doping amount of 1.00wt%.

Embodiment 3

[0036] Step A: Weigh 29.749g (100mmol) Zn(NO 3 ) 2 ·6H 2 O, 0.024g (0.1mmol) Cu(NO 3 ) 2 ·3H 2 O was dissolved in 100 mL deionized water to prepare a mixed salt solution.

[0037] Step B: Weigh 52.840g (220mmol) Na 2 S·9H 2 O was dissolved in 100 mL of deionized water to prepare a sodium sulfide solution.

[0038] Step C: the mixed salt solution prepared in step A and the sodium sulfide solution prepared in step B are mixed in a volume ratio of 1:1, and the mixture is mixed at 10.0mL min -1 The dropping rate was added to the rotating liquid film reactor to nucleate rapidly, and the obtained slurry was crystallized at 200 °C for 24 hours, filtered, washed, and dried to obtain a ZnS / CuS sample with a CuS doping amount of 0.10wt%.

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Abstract

The invention provides a copper sulphide-doped cubic crystal zinc sulfide material and a preparation method thereof. According to the invention, a small amount of CuS is doped in ZnS, CuS is uniformly dispersed in ZnS particles, and the mass percentage of CuS is 0.02 to 1.0%. The infrared transmittance of the material is more than 85% in a wavelength range of 2.5 to 25 mu m (400 to 4000 / cm); after the material is roasted at a temperature of 800 to 1000 DEG C for 1 to 2 h, the infrared transmittance of the material reaches 95% in a same range, and the crystal form of ZnS / CuS maintains unchanged after roasting. A nucleation / crystallization isolation method is used for preparation of the material, and the preparation method has the advantages of simple process, low cost and easily practicable reactions. CuS doped in the ZnS / CuS material is uniformly dispersed in the Zns particles, so an effect of stabilizing the crystal form of ZnS is produced, it is ensured that ZnS maintains a cubic phase crystal form after high temperature roasting, and infrared transmission performance of ZnS is not influenced.

Description

[0001] Field [0002] The invention relates to a cubic zinc sulfide material doped with copper sulfide and a preparation method thereof. The material is a high-efficiency infrared transmission material. Background technique [0003] Infrared transparent materials are mainly used as materials for infrared detectors and aircraft windows, hoods and fairings. This material has high infrared transmittance in the required working band to ensure that infrared equipment can obtain sufficient target infrared radiation information. Accurate and reliable acquisition of target information, thereby ensuring the accuracy of detection; at the same time, it can also protect infrared equipment from damage in harsh environments such as external high temperature, chemical smog, wind, sand, rain and snow. Zinc sulfide ZnS is an excellent infrared transmission material, which can -1 ) and 8~12μm (1250~833cm -1 ) band has high infrared transmittance and excellent mechanical and thermal properties...

Claims

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Application Information

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IPC IPC(8): C30B29/48C30B7/14
Inventor 李殿卿陈作锦冯拥军冯俊婷
Owner BEIJING UNIV OF CHEM TECH
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