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Preparation method of monodisperse spherical zine sulfide nano particles

A technology of nanoparticles and zinc sulfide, applied in the direction of zinc sulfide, etc., can solve the problems of low concentration of reaction solution, time-consuming and energy-consuming, low yield, etc., and achieve the effects of wide application, simple equipment and large output.

Inactive Publication Date: 2008-02-06
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, hydrothermal and solvothermal methods need supporting autoclaves and heating equipment, and generally all react under high temperature and high pressure, which consumes time and energy, is more dangerous, and the concentration of the reaction solution is generally also relatively low (10 -3 ~10 -2 mol / L), the yield is not high

Method used

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  • Preparation method of monodisperse spherical zine sulfide nano particles

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) The gelatin of 1wt%, the Zn of 0.3mol / L 3 (PO 4 ) 2 and 0.303 mol / L ethylenediaminetetraacetic acid (EDTA) were dissolved in water, the pH value was adjusted to 8.0 with ammonia water, and stirred at 50° C. for 20 minutes to obtain solution I.

[0026] 2) Dissolving 1 wt% gelatin and 1.2 mol / L thioacetamide in water to obtain solution II.

[0027] 3) Mix solution II and solution I at a volume ratio of 4 / 1. The mixed solution was stirred and reacted at 50° C. for 4 hours.

[0028] 4) Precipitate by centrifugation, wash repeatedly with water and ethanol, and dry to obtain the product. Particle size is 265nm, spherical monodisperse. as shown in picture 2.

Embodiment 2

[0030] 1) 1wt% gelatin, 0.3mol / L Zn(NO 3 ) 2 , 0.0045mol / L of MnCl 2 and 0.31mol / L ethylenediaminetetraacetic acid (EDTA) were dissolved in water, the pH value was adjusted to 8.0 with ammonia water, and stirred at 60° C. for 20 minutes to obtain solution I.

[0031] 2) Dissolving 1 wt% gelatin and 1.2 mol / L thiourea in water to obtain solution II.

[0032] 3) Mix solution II and solution I at a volume ratio of 4 / 1. The mixed solution was stirred and reacted at 60° C. for 4 hours.

[0033] 4) Precipitate by centrifugation, wash repeatedly with water and ethanol, and dry to obtain the product. Particle size is 35nm, spherical monodisperse. As shown in Figure 3.

Embodiment 3

[0035] 1) the polyvinyl alcohol of 0.5wt%, the Zn(OOCCH of 0.9mol / L 3 ) 2 , 0.02mol / L of MnCl 2and 1 mol / L ethylene glycol diethyl ether diamine tetraacetic acid were dissolved in water, the pH value was adjusted to 8.5 with ammonia water, and stirred at 70° C. for 30 minutes to obtain solution I.

[0036] 2) Dissolving 0.5wt% sodium lauryl sulfate and 4mol / L sodium sulfide in water to obtain solution II.

[0037] 3) Mix solution II and solution I at a volume ratio of 3 / 1. The mixed solution was stirred and reacted at 70° C. for 6 hours.

[0038] 4) Precipitate by centrifugation, wash repeatedly with water and ethanol, and dry to obtain the product. The particle size is 72nm, spherical and monodisperse.

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Abstract

The invention discloses a synthesizing method of single-dispersing spherical zinc sulfide nanometer particle acted by micro-elemental metal ion in the high density system, which is made of free zinc ion and sulfur ion to sediment, wherein the grain size, crystallizing property and optical property of spherical zinc sulfide nanometer particle are changed greatly by other micro-elemental metal ion; the product is pure zinc sulfide nanometer particle; the micro-elemental metal ion doesn't enter in the zinc sulfide nanometer lattice.

Description

technical field [0001] The invention belongs to the technical field of preparing nanometer sulfide materials by a wet chemical method, in particular to a method for synthesizing monodisperse and spherical zinc sulfide nanoparticles in large quantities through the action of other trace metal ions in a high-concentration system. Background technique [0002] As the size decreases, semiconductor nanoparticles show completely different properties from bulk materials, such as various quantum effects, delocalized quantum coherence effects, quantum fluctuations and chaos, many-body correlation effects, and nonlinear optical effects, etc. Both are closely related to the size of semiconductor nanoparticles. [0003] Zinc sulfide (ZnS) is an important wide-bandgap semiconductor material, and its bandgap width can reach 3.66eV at room temperature. ZnS semiconductor nanomaterials have broad application prospects in photocatalysis, infrared windows, optoelectronic devices, sensors, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/08
Inventor 唐芳琼冯华君
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI