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A process of making metal chalcogenide particles

A chalcogen element and elemental technology, which is applied in the direction of non-metal elements, rare earth metal compounds, sulfur compounds, etc., can solve the problem of low storage efficiency of particle suspensions

Active Publication Date: 2014-11-05
XIAMEN NANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solid content of the obtained stable metal chalcogenide particle suspension is far from the ideal value, generally less than 5%, making the storage efficiency of the particle suspension low

Method used

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  • A process of making metal chalcogenide particles
  • A process of making metal chalcogenide particles
  • A process of making metal chalcogenide particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0177] Monodisperse Nano ZnO

Embodiment 11

[0179] Get 20.95g methanol and add 4.97gZn(OAc) 2 2H 2 O in a three-neck round bottom flask. 3.18 g of concentrated NaOH (49%) was diluted with 20.95 g of methanol and mixed with Zn(OAc) under vigorous stirring 2 The solutions were mixed and the reaction temperature was maintained at 62°C. NaOH solution and Zn(OAc) 2 After the solution was mixed for 4min-8min, 20ml of 0.015w / w sodium oleate aqueous solution was added, and the reaction solution immediately formed a white precipitate, and then the reaction solution was aged at 62°C for 45min.

[0180] 20ml of hexane was added to the reaction solution, and the white precipitate dissolved and was extracted into hexane to form a light blue solution. The aqueous layer was separated using a separatory funnel. Then 30ml of isopropanol (IPA) was added into the hexane layer to form a flocculent precipitate, which was centrifuged and washed with methanol and isopropanol. The resulting white precipitate is easily dispersed in a vari...

Embodiment 12

[0192] Nano ZnO particles were prepared according to the method described in Example 1.1, changing the concentration of sodium oleate solution from 0.005w / w% to 0.04w / w%. Hexane was selected as the redispersion solvent for nano-ZnO particles.

[0193] Using TEM, DLS to analyze and characterize the particle size, shape and particle size distribution. It can be seen from the results that the primary particle size of the sample is about 10nm-15nm, and the steepness ratio is about 1.5-2.0.

[0194] It can be seen from the XRPD analysis results that the crystal structure of the nano-ZnO particles synthesized in this example is the same as that of the nanoparticles prepared in the above-mentioned Example 1.1.

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Abstract

There is disclosed a process of making metal chalcogenide particles. The process comprises the steps of reacting a metal salt solution with a precipitant solution under conditions to form metal chalcogenide particles and by-product thereof, coating the metal chalcogenide particles with a surfactant; and separating the surfactant coated chalcogenide particles from the by-product to obtain metal chalcogenide particles substantially free of by-product.

Description

technical field [0001] The invention relates to a method for preparing metal chalcogenide particles, which belongs to the field of preparation of metal chalcogenide particles. technical background [0002] In recent years, nanoscale metal chalcogenide materials have been widely used in biomarkers, nonlinear optical materials, light-emitting diodes, photodetectors, catalysts, chemical sensors, and UV protective coatings, and thus have attracted extensive attention. Known methods for the preparation of metal chalcogenide nanomaterials involve reactions in specific media such as microemulsions or polymer substrates, but the problem is that it is difficult to produce particles of uniform size. [0003] Although there are a large number of methods for synthesizing crystalline metal chalcogenides, methods for large-scale synthesis or mass production of nanoscale metal chalcogenide particles are still a challenge. Usually metal chalcogenides can also be synthesized by wet methods,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B17/20C01B17/00C01G5/00C01G11/02C01F17/235
CPCC01P2004/64B82Y30/00C01G49/08C09C3/12C09C1/043C01F17/0043C01P2002/72C01P2004/04C09C1/24C01B17/20C09C3/08C01P2006/22C01G9/02C01G3/02C01P2004/52C01F17/235
Inventor 沈志刚黄明达甄崇礼陈建峰吴忆薇苏纬强
Owner XIAMEN NANOTECH