Synthesis method for rock salt mine MnS nano-cuboid superlattice

A nanocube and synthesis method technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problem that the size of MnS nanomaterials cannot be effectively adjusted, the nanocrystal product does not have a superlattice, and the preparation method is complicated. problems, to achieve the effect of controllable nanocrystal size, short synthesis time and simple process

Inactive Publication Date: 2015-01-28
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to prepare MnS nanomaterials, it is usually necessary to rapidly lower the temperature for extraction. The preparation method given in this document has a complicated process and a long reaction time, and the reaction temperature of 250-350 ° C is lowered to room temperature in less than 1 minute.
The obtained nanocrystalline products do not have the morphology of superlattice, nor can they effectively adjust the size of MnS nanomaterials

Method used

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  • Synthesis method for rock salt mine MnS nano-cuboid superlattice
  • Synthesis method for rock salt mine MnS nano-cuboid superlattice
  • Synthesis method for rock salt mine MnS nano-cuboid superlattice

Examples

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Effect test

Embodiment 1

[0027] Example 1 Synthesis of MnS nanocube superlattice in rock salt mine

[0028] The synthesis of rock salt mine MnS nanocube superlattice is carried out in the Schlenk system. The synthesis process requires nitrogen protection. The specific synthesis process is as follows: 0.063g anhydrous MnCl 2 , 0.038g of thioacetamide, 1ml of oleic acid and 4ml of oleylamine into the three-necked bottle, and then plug the two sides of the three-necked bottle with rubber stoppers, connect the middle port to the Schlenk system, and set the thermocouple from three Insert one side of the flask under the liquid surface, stir and heat to 80°C, and obtain a uniform orange-yellow solution after about 1 hour. Then the solution was heated to 250°C, the orange solution gradually turned green, forming rock salt MnS nanocrystals, and the reaction time was 30 minutes to obtain 14nm rock salt MnS nanocrystals. Finally, the solution is naturally cooled to room temperature, and a superlattice of MnS nanocu...

Embodiment 2

[0029] Example 2 Synthesis of MnS nanocube superlattice in rock salt mine

[0030] The amount of raw materials and ligands, and the synthesis process are the same as in Example 1. Only the reaction time at 250°C was changed to 60min, and 26nm rock salt MnS nanocrystals were obtained. Naturally cooled to room temperature, the obtained rock salt ore MnS nanocube superlattice.

Embodiment 3

[0031] Example 3 Synthesis of MnS nanocube superlattice in rock salt mine

[0032] The amount of raw materials and ligands, and the synthesis process are the same as in Example 1. Only the reaction time was changed to 120min at 250°C to obtain 40nm rock salt MnS nanocrystals. Naturally cooled to room temperature, the obtained rock salt ore MnS nanocube superlattice.

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Abstract

A synthesis method for a rock salt mine MnS nano-cuboid superlattice, which is disclosed by the invention, belongs to the technical field of nano-material preparation. Anhydrous manganese chloride and thioacetamide as materials and oleylamine and oleic acid as ligands are mixed, agitated and heated until uniform orange solution is obtained; the solution is then heated to 240 DEG C to 260 DEG C, and reacts for 0.5 to 2 hours, so that rock salt mine MnS nano-crystals are formed; and finally, the solution is naturally cooled to room temperature, so that the rock salt mine MnS nano-cuboid superlattice is obtained. The synthesis method has the advantages of common used materials, simple process, short synthesis time, high repeatability, safety and the like, and the nano-crystal size of the product is controllable; and the prepared rock salt mine MnS nano-cuboid superlattice has the advantages of stable structure, high phase purity, good crystallinity, uniform grain size distribution and good optical and magnetic properties.

Description

Technical field [0001] The invention belongs to the technical field of nano material preparation, and particularly relates to a method for preparing rock salt ore MnS nano cubic superlattices. Background technique [0002] As an important magnetic semiconductor material, MnS exhibits various important optical, magnetic, and electronic transport properties. It has potential applications in magneto-optical nanodevices, diluted magnetic semiconductors, solar cells, short-wave optoelectronic devices, and photocatalysis. In particular, MnS is an antiferromagnetic semiconductor material, which has an interesting magnetic arrangement. In thin film superlattices, this magnetic arrangement can be adjusted by controlling the dimensions and thickness. Due to its wide application potential, the synthesis and properties of rock salt MnS nanocrystals with controllable size have attracted extensive research interests. [0003] MnS has three crystal structures: rock salt, sphalerite and wurtzit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G45/00B82Y30/00
Inventor 邹勃杨新一王英楠邹广田
Owner JILIN UNIV
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