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Method for preparing general nano metal sulphide

A nano metal and sulfide technology, applied in the field of material chemistry, can solve the problems of low phase purity, difficult control of size and valence, and harsh preparation conditions, and achieve easy control of reaction conditions, high yield and good dispersibility. Effect

Inactive Publication Date: 2010-10-13
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, combining the above various preparation methods, there are problems such as relatively harsh preparation conditions, low product phase purity, and difficult control of size and valence state.

Method used

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  • Method for preparing general nano metal sulphide
  • Method for preparing general nano metal sulphide
  • Method for preparing general nano metal sulphide

Examples

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Effect test

Embodiment 1

[0033] With 0.2mmol of iron diethyldithiocarbamate (Fe(DDTC) 3 ) as a raw material, dissolved in a three-necked flask equipped with a mixed solvent of oleic acid, oleylamine and octadecene (10mmol: 10mmol: 20mmol), pumped and heated to about 120°C, kept for 20min, and then heated up under the protection of an inert gas Keep it at 280°C for 1 hour. Finally, after the solution is naturally cooled to room temperature, add 50mL of absolute ethanol, centrifuge, wash and dry, and the obtained black powder is identified as cubic phase Fe by X-ray diffraction using a transmission electron microscope. 3 S 4 nanoparticles (such as figure 1 shown); the obtained nanoparticles are as figure 2 Fe 3 S 4 It has very good magnetic properties as shown in the saturation magnetization curve.

Embodiment 2

[0035] With 0.2mmol of zinc diethyldithiocarbamate (Zn(DDTC) 2) as a raw material, dissolved in a three-necked flask equipped with a mixed solvent of oleic acid and oleylamine (40mmol: 40mmol), pumped and heated to about 100°C, kept for 30min, and then heated to 300°C for 1 hour under the protection of an inert gas , after the solution is naturally cooled to room temperature, add 50mL absolute ethanol, centrifuge, wash and dry, the white powder of gained is identified as the ZnS nanoparticle of hexagonal phase through X-ray diffraction (such as image 3 shown). The resulting nanoparticles have excellent optical properties (e.g. Figure 4 shown).

[0036] In summary, the present invention utilizes the method of thermal decomposition of high-boiling point mixed solvents, through the control of the thermal decomposition process of the precursor and the solvent composition, to realize the control of the crystal nucleation and growth process, and further obtain high yield, unifor...

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Abstract

The invention discloses a method for preparing general nano metal sulphide. The method is characterized in that: diethyldithio carbamate is adopted as a single-source reaction precursor of the sulphide, and is thermally decomposed, nucleated and grown in the mixed solution of surfactants with different coordination properties to prepare appearance and size-controllable sulphide nanocrystals in a pure state by one step. In the method, the thermal decomposition of the reaction precursor in the high-boiling mixed solution of the surfactants and components of the solution are controlled, and the nucleation and growth process of the nanocrystals is adjusted, so the prepared metal sulphide has the characteristics of pure phase state, uniform size, high yield, relatively higher dispersibility in non-polar organic solvents, easily controlled reaction conditions and large-scale production.

Description

technical field [0001] The invention relates to a preparation method of a nano metal compound material, in particular to a preparation method of a nano metal sulfide, belonging to the technical field of material chemistry. Background technique [0002] Metal sulfides have excellent optical, electrical, magnetic, and catalytic properties, and are widely used in semiconductors, biomedicine, photoluminescence devices, solar cells, infrared detectors, optical fiber communications, pigments, lubricants, etc. With the increasing application of metal sulfides, a number of methods for preparing nanometer metal sulfides have emerged. [0003] For example: Park Dong-gyu et al applied for a patent on "Metal Sulfides and Their Preparation Method" (patent application number: 02127680.3). This invention needs to add metal powder and sulfur powder together into a sealed container, rotate or vibrate the sealed container, or rotate the rotating body in the sealed container, to carry out che...

Claims

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Application Information

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IPC IPC(8): C01G49/12C01G9/08B82B3/00
Inventor 王强斌张叶俊
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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