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1T-MoS2-modified ZnCoS solid solution hollow dodecahedral nanocomposite and preparation method and application thereof

A technology of nanocomposite material and dodecahedron, which is applied in the field of ZnCoS solid solution hollow dodecahedron nanocomposite material and its preparation, and can solve problems such as application limitations

Active Publication Date: 2019-05-28
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although ZnS has high catalytic activity and good application prospects, it can only be excited by ultraviolet light due to its wide band gap (3.2eV), and its photogenerated electrons and holes can recombine rapidly, which Its application in the field of photocatalysis has been greatly restricted

Method used

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  • 1T-MoS2-modified ZnCoS solid solution hollow dodecahedral nanocomposite and preparation method and application thereof
  • 1T-MoS2-modified ZnCoS solid solution hollow dodecahedral nanocomposite and preparation method and application thereof
  • 1T-MoS2-modified ZnCoS solid solution hollow dodecahedral nanocomposite and preparation method and application thereof

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Effect test

Embodiment 1

[0039] 1T-MoS 2 The preparation method of the modified ZnCoS solid solution hollow dodecahedron nanocomposite material, the specific steps are as follows:

[0040] (1) Preparation of metal organic framework material ZnCo-MOF:

[0041] Weigh 184 mg of zinc acetate (1 mmol) and 177 mg of cobalt acetate (1 mmol) in 50 ml of methanol solution, and stir at room temperature until the solute is completely dissolved to obtain a mixed solution of two metal salts, which is called A solution. Weigh 414 mg of dimethylimidazole (8 mmol) and dissolve in 40 ml of methanol solution, and stir at room temperature until the solute is completely dissolved to obtain a B solution. At room temperature, slowly add B solution to A solution, keep stirring, continue to stir for 20 hours and then stand for 6 hours, the reaction product is separated by suction filtration, then washed with distilled water 3 times, ethanol washed 3 times, and then the product is placed at 60 ℃ Dry in a vacuum oven for 8 hours t...

Embodiment 2

[0047] 1T-MoS 2 The preparation method of the modified ZnCoS solid solution hollow dodecahedron nanocomposite material, the specific steps are as follows:

[0048] (1) Preparation of metal organic framework material ZnCo-MOF:

[0049] Weigh 184 mg of zinc acetate (1 mmol) and 1.593 g of cobalt acetate (9 mmol) in 100 ml of methanol solution, and stir at room temperature until the solute is completely dissolved to obtain a mixed solution of two metal salts, which is called A solution. Weigh 4.144 g of dimethylimidazole (80 mmol) and dissolve it in 1600 ml of methanol solution, and stir at room temperature until the solute is completely dissolved to obtain a B solution. At room temperature, slowly add B solution to A solution with constant stirring. After stirring for 24 hours, let it stand for 6 hours. The reaction product was separated by suction filtration, followed by washing with distilled water 3 times and ethanol washing 3 times, then the product was placed at 80°C Dry in a v...

Embodiment 3

[0055] 1T-MoS 2 The preparation method of the modified ZnCoS solid solution hollow dodecahedron nanocomposite material, the specific steps are as follows:

[0056] (1) Preparation of metal organic framework material ZnCo-MOF:

[0057] Weigh 1.656 mg of zinc acetate (9 mmol) and 177 mg of cobalt acetate (1 mmol) and dissolve them in 500 ml of methanol solution, stir at room temperature until the solute is completely dissolved, and obtain a mixed solution of two metal salts, which is called A solution. Weigh 3.108 g of dimethyl imidazole (60 mmol) and dissolve it in 1800 ml of methanol solution, and stir at room temperature until the solute is completely dissolved to obtain a B solution. At room temperature, slowly add B solution to A solution and keep stirring for 24 hours and then let stand for 8 hours. The reaction product was separated by suction filtration, then washed with distilled water 3 times, ethanol washed 3 times, and then the product was placed at 80°C Dry in a vacuum ...

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Abstract

The invention discloses a 1T-MoS2-modified ZnCoS solid solution hollow dodecahedral nanocomposite and a preparation method and application thereof. Firstly, a ZnCo-MOF is calcined at a high temperature to obtain a derivative of the ZnCo-MOF, then the derivative and molybdate are subjected to hydrothermal vulcanization reaction to obtain a MoS2 / ZnCoS nanocomposite, and the ZnCo-MOF is a bi-metal organic framework material and is obtained through reaction of cobalt acetate, zinc acetate and dimethylimidazole. The bi-metal organic framework material with a large specific surface area and a stablethree-dimensional space structure is used as a template, the ZnCo bi-metal oxide derivative is obtained through high-temperature calcination, and finally a mixture of the derivative and the molybdateis subjected to hydrothermal vulcanization to obtain the transition metal sulfide nanomaterial with high catalytic activity. The prepared hollow polyhedral MoS2 / ZnCoS nanocomposite has high performance of producing hydrogen by water decomposition under photocatalysis.

Description

Technical field [0001] The invention belongs to the technical field of photocatalytic nanomaterials, and specifically relates to a 1T-MoS-based 2 Modified ZnCoS solid solution hollow dodecahedron nanocomposite material and its preparation method and application. Background technique [0002] In recent years, due to global energy shortages and environmental pollution issues have become increasingly prominent, the development of new green energy and technology is imminent, and photocatalysis research has emerged. Photocatalysis refers to the use of natural light energy as an energy source in the presence of a catalyst to decompose some easily available or cheap chemicals into more efficient, clean and environmentally friendly substances or energy products. The difference between photocatalysis and other catalysis is the low energy consumption rate. Catalytic reactions can be carried out only by using natural sunlight as the energy supply. At the same time, sunlight is also a renew...

Claims

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Application Information

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IPC IPC(8): B01J27/051B01J35/10C01B3/04
CPCY02E60/36
Inventor 李映伟猫清陈俊英
Owner SOUTH CHINA UNIV OF TECH
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