Compound alkali metal hydrate dissolvent synthesis method for metallic sulfide nano crystal material

A metal sulfide, nanocrystal technology, applied in the direction of alkali metal sulfide/polysulfide, etc., to achieve the effect of low synthesis cost and few controllable parameters

Inactive Publication Date: 2008-01-30
CHONGQING UNIV
View PDF1 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report on the preparation of sulfide nanocrys

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Compound alkali metal hydrate dissolvent synthesis method for metallic sulfide nano crystal material
  • Compound alkali metal hydrate dissolvent synthesis method for metallic sulfide nano crystal material
  • Compound alkali metal hydrate dissolvent synthesis method for metallic sulfide nano crystal material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1

[0026] Specific synthesis method of cadmium sulfide (CdS) nanocrystalline material

[0027] 1. KOH=57% and NaOH=43% are weighed and mixed as the reaction solvent.

[0028] 2. According to cadmium chloride (CdCl 2 The weight percentages of) and sulfur powder are 23% and 77%, respectively, and weighed as reactants. The weight percentage of the reactant to the weight of the reactant + reaction solvent is 2.2%.

[0029] 3. Put the reaction raw materials in the above step 2 and the reaction solvent in the above step 1 into a polytetrafluoroethylene reaction container, and then cover the polytetrafluoroethylene container and place it in a constant temperature muffle furnace at a temperature of 200°C. After the reaction vessel is kept in the furnace for 40 minutes, the reaction vessel is opened and stirred so that the molten reaction solvent and the reactants are uniformly mixed. The reaction vessel was sealed with a lid again, and the temperature was kept at a constan...

Example Embodiment

[0033] Example 2:

[0034] Synthesis of Zinc Sulfide (ZnS) Nanocrystalline Structure

[0035] 1. KOH=57% and NaOH=43% are weighed and mixed as the reaction solvent.

[0036] 2. Press zinc acetate (Zn(CH 3 COO) 2 .2H 2 O) and sodium sulfide (Na 2 S.9H 2 The weight percentages of O) were 16% and 84%, respectively, and weighed as reactants. The weight percentage of the reactant to the weight of the reactant + reaction solvent is 10%.

[0037] 3. Put the reaction raw materials of the above step 2 and the reaction solvent in the above step 1 into a polytetrafluoroethylene reaction container, and then cover the polytetrafluoroethylene container and place it in a constant temperature muffle furnace at a temperature of 200°C. After the reaction vessel is kept in the furnace for 40 minutes, the reaction vessel is opened and stirred so that the molten reaction solvent and the reactants are uniformly mixed. The reaction vessel was sealed again with a lid, and kept at a constant temperature o...

Example Embodiment

[0041] Example 3:

[0042]Synthesis method of lead sulfide (PbS) nanocrystalline material

[0043] 1. KOH=57% and NaOH=43% are weighed and mixed as the reaction solvent.

[0044] 2. Press lead nitrate (Pb(NO 3 ) 2 ) And sodium sulfide (Na 2 S.9H 2 The weight percentages of O) were 42% and 58%, respectively, and weighed as reactants. The weight percentage of the reactant to the weight of the reactant + reaction solvent is 1.3%.

[0045] 3. Put the reaction raw materials in the above step 2 and the reaction solvent in the above step 1 into a polytetrafluoroethylene reaction container, and then cover the polytetrafluoroethylene container and place it in a constant temperature muffle furnace at a temperature of 165°C. After the reaction vessel is kept in the furnace for 40 minutes, the reaction vessel is opened and stirred so that the molten reaction solvent and the reactants are uniformly mixed. The reaction vessel was sealed again with a cap, and the temperature was kept at a consta...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Sizeaaaaaaaaaa
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method for a metal sulfide and a composite metal sulfide nano crystal material, which is suitable for the preparation of the nano crystal materials of cadmium sulfide, cuprous sulfide, zinc sulfide, lead sulfide, bismuth sulfide, and zinc-cadmium sulfide. The method is characterized in that water or organic solvent used in the existing hydrothermal or solvent thermal synthetic methods is replaced with melt composite alkali metal hydroxide which is synthesized through a chemical reaction under the normal atmosphere and a temperature between 100 and 300 DEG C. The raw materials used are soluble inorganic metal salts and sulfide or sulfide compounds, thereby having less controllable parameters and simple art, and being able to amplify manufacturing during the process of synthesis. Metal sulfide crystal produced has the advantages of good crystal, clean surface and even size, and is suitable for the research on the intrinsic properties and the maximum play of the functions of the nano crystal materials. The metal sulfide and the composite metal nano crystal materials have properties of a semiconductor, LED and optoelectronic, thereby being suitable for biomarker and preparation of a nano electronic apparatus, an LED apparatus and an optoelectronic apparatus.

Description

technical field [0001] The invention belongs to the field of preparation of metal sulfide nano crystal materials, in particular, relates to a preparation method of metal oxide nano crystal materials using composite alkali metal oxide as a solvent. Background technique [0002] Metal sulfide nanocrystal materials have semiconducting, luminescent and optoelectronic properties, and can be used in biomarkers, preparation of nanoelectronic devices, light emitting devices and optoelectronic devices. Among the existing methods for synthesizing sulfides, the method of composite solvothermal synthesis, for example, the Chinese patent publication number is 200510103028.9. The method for preparing sulfide nano-ions adopts the mixture of hydroxide, fatty acid and various organic polar solvents as a synthesis solvent, and uses metal Salt and sodium sulfide are synthetic raw materials. First, prepare the reaction precursor, such as mixing a certain amount of sodium hydroxide with a small ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C01B17/22
Inventor 胡陈果奚伊
Owner CHONGQING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap