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Process for preparing aqueous phase lead selenide nano material

A nanomaterial and lead selenide technology are applied in the field of preparation of lead selenide nanomaterials, can solve problems such as unfavorable biological applications, and achieve the effects of low cost of raw materials, mild reaction conditions and short preparation period

Inactive Publication Date: 2007-06-27
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesized nanocrystals can only be dispersed in organic solvents, which is not conducive to the application in the biological field.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Preparation of lead selenide nanocrystals coated with mercaptoacetic acid

[0011] First weigh 0.15g (0.4mmol) of lead acetate, dissolve it into 30mL of deionized water, add 27μL (0.4mmol) of mercaptoacetic acid, and then use 1M sodium hydroxide to adjust the pH value of the solution to 7 to prepare lead body solution. Dissolve 0.39g (3.2mmol) selenourea in deionized water to make a selenium precursor solution, then quickly pour the selenium precursor solution into the lead precursor solution, heat to 60°C, and stop the reaction after 15 minutes of reaction. After the solution is cooled, it is washed with water and isopropanol, centrifuged, and dried to prepare a water-phase lead selenide nanometer material, which is in the shape of nanometer particles and has a diameter ranging from 15 to 25 nm.

Embodiment 2

[0013] Preparation of lead selenide nanocrystals coated with mercaptopropionic acid

[0014] First weigh 0.30g (0.8mmol) of lead acetate, dissolve it in 40mL of deionized water, add 136μL (1.6mmol) of mercaptopropionic acid, and then use 1M sodium hydroxide to adjust the pH value of the solution to 10 to make lead precursor solution. Dissolve 0.39g (3.2mmol) of selenourea in deionized water to make a selenium precursor solution. Then quickly pour the selenium precursor solution into the lead precursor solution, heat to 120 ° C, stop the reaction after 30 minutes of reaction, after the solution is cooled, wash with water and isopropanol, centrifuge, and dry to obtain the obtained The water-phase lead selenide nanomaterial has a shape of nanoparticle and a diameter range of 20-30nm.

Embodiment 3

[0016] Preparation of cysteine-coated lead selenide nanocrystals

[0017] First weigh 0.15g (0.4mmol) of lead acetate, dissolve it in 30mL of water, add 0.07g (0.6mmol) of cysteine, and then use 1M sodium hydroxide to adjust the pH value of the solution to 9, before making lead body solution. 0.39g (3.2mmol) selenourea was dissolved in deionized water to make selenium precursor solution. Then quickly pour the selenium precursor solution into the lead precursor solution, heat to 180 ° C, stop the reaction after 45 minutes of reaction, after the solution is cooled, wash with water and isopropanol, centrifuge, and dry to obtain the obtained The water-phase lead selenide nanomaterial has a shape of a nanorod with a diameter in the range of 30-50nm and a length in the range of 80-500nm.

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Abstract

A process for preparing water-phase nano-lead selenide features the reaction between lead acetate, selenourea and coating agent chosen from mercaptoacetic acid, mercaptopropionic acid, cysteine, thioglycerin, and mercaptoethanol at 60-180 deg.C for 15-90 min.

Description

technical field [0001] The invention relates to a preparation method for preparing lead selenide nanometer material soluble in water phase. Background technique [0002] The study of nanomaterials, especially nanosemiconductor materials, is recognized as one of the most promising disciplines in the 21st century. The preparation and research of one-dimensional or quasi-one-dimensional nano-semiconductor materials will help to understand the nucleation and growth of crystals at the atomic or molecular level, and help to further explore the relationship between quantum size effects and unique physical and chemical properties. It has important guiding significance for the design and manufacture of microelectronic devices at the molecular level in the future. Especially one-dimensional semiconducting nanomaterials have aroused great interest because of their unique physical and chemical properties and potential applications in nanodevices. Lead selenide is a semiconductor mater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B19/04C01G21/00
Inventor 聂伟毛骏赵娜娜范燕迪李海东姬相玲
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI