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Preparation method of tungsten disulfide nanorod

A technology of tungsten disulfide and nanorods, which is applied in chemical instruments and methods, nanotechnology, inorganic chemistry, etc., can solve problems affecting applications, large length difference, uneven size distribution, etc., and achieve concentrated length distribution and good dispersion , the effect of a wide range of application prospects

Active Publication Date: 2016-04-20
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the diameter of tungsten disulfide nanorods obtained by this method is about 20~100nm, and the length is between 0.1~2um. , the size distribution is not uniform, which affects its application in photochemistry and other fields

Method used

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  • Preparation method of tungsten disulfide nanorod

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The preparation method of the tungsten disulfide nanorod of embodiment 1, comprises the following steps:

[0026] (1) Dissolve 1g (3mmol) sodium tungstate, 0.42g (6mmol) hydroxylamine hydrochloride and 0.91g (12mmol) thiourea in 60ml water, stir and dissolve to form a transparent solution, then adjust the solution with 2mol / L hydrochloric acid pH to 5.5;

[0027] (2) Add 0.43 mmol of mixed surfactant to the solution obtained in step (1), and stir to dissolve; the mixed surfactant is composed of CTAB, CTAC and F127 in a molar ratio of 1:1.8:1.2;

[0028] (3) Transfer the solution obtained in step (2) into a stainless steel reactor, seal it, and react at 180°C for 18 hours;

[0029] (4) Cool the reaction product obtained in step (3) to room temperature, centrifuge the reaction product, discard the supernatant, wash the black precipitate with deionized water and absolute ethanol, and store the product in a vacuum oven at 60°C Dry in medium to obtain tungsten disulfide na...

Embodiment 2

[0034] The preparation method of the tungsten disulfide nanorod of embodiment 2, comprises the following steps:

[0035] (1) Dissolve 1g (3mmol) sodium tungstate, 0.32g (4.5mmol) hydroxylamine hydrochloride and 0.68g (9mmol) thiourea in 60ml of water, stir and dissolve to form a transparent solution, then adjust the solution with 2mol / L hydrochloric acid pH to 5;

[0036] (2) Add 0.6 mmol of mixed surfactant to the solution obtained in step (1), and stir to dissolve; the mixed surfactant is composed of CTAB, CTAC and F127 in a molar ratio of 1:1.5:0.6;

[0037] (3) Transfer the solution obtained in step (2) into a stainless steel reactor, seal it, and react at 170°C for 24 hours;

[0038] (4) Cool the reaction product obtained in step (3) to room temperature, centrifuge the reaction product, discard the supernatant, wash the black precipitate with deionized water and absolute ethanol, and store the product in a vacuum oven at 60°C Dry in medium to obtain tungsten disulfide n...

Embodiment 3

[0040] The preparation method of the tungsten disulfide nanorod of embodiment 3, comprises the following steps:

[0041] (1) Dissolve 1g (3mmol) sodium tungstate, 0.63g (9mmol) hydroxylamine hydrochloride and 1.14g (15mmol) thiourea in 60ml water, stir and dissolve to form a transparent solution, and then adjust the solution with 2mol / L hydrochloric acid pH to 6;

[0042] (2) Add 0.3 mmol of mixed surfactant to the solution obtained in step (1), and stir to dissolve; the mixed surfactant is composed of CTAB, CTAC and F127 in a molar ratio of 1:3:1.8;

[0043] (3) Transfer the solution obtained in step (2) into a stainless steel reaction kettle, seal it, and react at 200°C for 10 hours;

[0044] (4) Cool the reaction product obtained in step (3) to room temperature, centrifuge the reaction product, discard the supernatant, wash the black precipitate with deionized water and absolute ethanol, and store the product in a vacuum oven at 60°C Dry in medium to obtain tungsten disul...

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Abstract

The invention discloses a preparation method of a tungsten disulfide nanorod. The method comprises the following steps that sodium tungstate, hydroxylamine hydrochloride and thiourea are dissolved in water according to the molar ratio of 1 to (1.5-3) to (3-5) to form a solution, a mixed surfactant is added to the solution, the mixed surfactant is composed of CTAB, CTAC and F127 which are mixed according to the molar ratio of 1 to (1.5-3) to (0.6-1.8), the solution is moved into a stainless steel reaction kettle, and a reaction is conducted for 10-24 h at the temperature ranging from 170 DEG C to 200 DEG C. For the prepared tungsten disulfide nanorod, the diameter ranges from 20 nm to 100 nm, the length ranges from 200 nm to 350 nm, the maximum length difference is smaller than 150 nm, the length distribution is centralized, the size uniformity is good, and the dispersity is good; meanwhile, the prepared tungsten disulfide nanorod has the unexpected visible light absorption property and the wide application prospect in the photocatalytic aspect.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a method for preparing tungsten disulfide nanorods. Background technique [0002] Nanostructured materials possess unique physical, chemical, electrical, magnetic and mechanical properties. Due to its advantages such as low density and large specific surface area, it has potential application prospects in the fields of filling materials, drug delivery, and catalysis. Therefore, it is of great significance to carry out research on the preparation of such materials. Existing studies have shown that transition metal disulfides have unique properties, and they can be used as photosensitive materials, catalysts, lubricants, cathode materials for high-energy batteries, etc. [0003] Tungsten disulfide (WS 2 ) has a layered structure similar to graphite flakes, with strong covalent bonds within the layers and weak Van der Waals forces between the layers, and the laye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G41/00B82Y40/00
CPCC01G41/00C01P2002/72C01P2004/16
Inventor 曹仕秀韩涛彭玲玲赵聪
Owner CHONGQING UNIV OF ARTS & SCI
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