Method for preparing nanometer sulfides powder

A powder material, sulfide technology, applied in chemical instruments and methods, lead sulfide, zinc sulfide, etc., can solve the problems of large particle size, wide size range, low purity, etc., achieve narrow particle size distribution, avoid agglomeration, The effect of high powder purity

Inactive Publication Date: 2006-04-12
SHANGHAI UNIV
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Problems solved by technology

[0002] At present, the preparation of nanomaterials is mainly divided into physical methods and chemical methods. The chemical precipitation method is one of the more common chemical metho

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  • Method for preparing nanometer sulfides powder

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Example Embodiment

[0015] Example 1: Add ZnSO 4 13.72g (0.085mol) is formulated into a concentration of 1.0×10 -4 mol / L solution, add 6g (0.6%) quaternary ammonium salt, add Na 2 S9.95g is formulated into a solution with a concentration of 1.0×10 -3 mol / L. Will Na 2 S solution slowly drip into ZnSO 4 In the solution, stir rapidly at the same time, continue to stir for a while after the addition, then filter, wash with water, dry, and calcinate at 750°C. Finally, 6.22 g of white ZnS powder with a particle size of 20 to 120 nm was obtained.

Example Embodiment

[0016] Example 2: The CdSO 4 18.81g (0.09mol) is formulated to a concentration of 1.2×10 -4 mol / L solution, add 4.57g (0.5%) quaternary ammonium salt, add Na 2 S10.53g is formulated into a solution with a concentration of 1.0×10 -3 mol / L. Will Na 2 S solution slowly drip into CdSO 4 In the solution, stir rapidly at the same time, continue to stir for a while after the addition, then filter, wash with water, dry, and calcinate at 750°C. Finally, 10.40 g of orange CdS powder with a particle size of 20-100 nm was obtained.

Example Embodiment

[0017] Example 3: Pb(NO 3 ) 2 52.99g (0.16mol) is formulated into a concentration of 2.0×10 -4 mol / L solution, add 10.00g (0.9%) quaternary ammonium salt, add Na 2 S18.73g is formulated into a solution with a concentration of 1.0×10 -3 mol / L. Will Na 2 S solution is slowly dripped into Pb(NO 3 ) 2 In the solution, stir rapidly at the same time, continue to stir for a while after the addition, then filter, wash with water, dry, and calcinate at 750°C. Finally, 34.45g of blue PbS powder with a particle size of 50-140nm was obtained.

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Abstract

A process for preparing sulfide nano-particles includes such steps as preparing the solution of metal salt, adding quaternary ammonium salt, dripping the solution of sodium sulfide in it to generate deposit, filter, water washing, removing the ions of impurities, drying and calcining.

Description

technical field [0001] The invention relates to a preparation method of nanometer sulfide powder material. Background technique [0002] At present, the preparation of nanomaterials is mainly divided into physical methods and chemical methods. The chemical precipitation method is one of the more common chemical methods. Its advantage is that the process is simple and suitable for the preparation of nano-oxide powder materials. Its disadvantages are low purity and particle size. Larger with a wide range of sizes. Invention content: [0003] One of the objectives of the present invention is to provide a method for preparing nano-sulfide powder material, which uses quaternary ammonium salt as a dispersant to prepare nano-oxide powder material. [0004] Quaternary ammonium salts are widely used in hair and skin care products, see US Patent No. USP4978526, and their sources are extensive. The structure of the quaternary ammonium salt is: [0005] [0006] Utilizing the un...

Claims

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Application Information

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IPC IPC(8): C01G21/21C01G19/00C01G11/02C01G9/08
Inventor 姜沪章建民孙弘刚
Owner SHANGHAI UNIV
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