H-MoS2/NG nanocomposite material and preparation method and application thereof

A nanocomposite material and nanoparticle technology, which is applied in the field of H-MoS2/NG nanocomposite material and its preparation, can solve problems such as production limitations, and achieve the effects of easy scale, uniform growth, and low overpotential

Inactive Publication Date: 2017-03-22
GUANGDONG IND TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of the present invention overcomes the problem that the production of electrocatalytic water desorption materials is limited to platinum-containing catalysts in the prior art, and provides a large-scale batch production of H-MoS that can be used as an electrocatalytic water desorption material and has excellent hydrogen desorption electrocatalysis 2 / NG nanocomposite preparation method

Method used

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  • H-MoS2/NG nanocomposite material and preparation method and application thereof
  • H-MoS2/NG nanocomposite material and preparation method and application thereof
  • H-MoS2/NG nanocomposite material and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0043] MoS 2 The composition of the hydrothermal reaction solution of hollow nanospheres is 0.87g molybdenum trioxide, 0.52g sodium fluoride, 1.93g potassium thiocyanate and 30mL deionized water.

[0044] The composition of the NG hydrothermal reaction solution was 30 mL of graphene oxide, 15 mL of ammonia water and 100 mg of NaOH.

[0045] MoS 2 The synthesis of nano hollow spheres is realized by hydrothermal method. MoS 2 The hollow nanosphere growth solution is placed in a high-pressure reactor (the reaction solution is generally 80% of the volume of the reactor), and the hydrothermal reaction is maintained at 220° C. for 24 hours. After the reaction was completed, it was cooled to room temperature, and the obtained sample was repeatedly washed three times with deionized water, and dried at 80°C.

[0046] The MoS obtained above 2 Nanohollow spheres (0.5 g) were dispersed in toluene solution by ultrasound. After 1h, 0.5mL APS was added to the above solution, and APS-mo...

Embodiment 2

[0049] MoS 2 The composition of the hydrothermal reaction solution of hollow nanometer spheres is 0.85g molybdenum trioxide, 0.50g sodium fluoride, 1.8g potassium thiocyanate and 20mL deionized water.

[0050] The composition of NG hydrothermal reaction solution is graphene oxide 10mL, ammonia water 15mL and NaOH 80mg.

[0051] MoS 2 The synthesis of nano hollow spheres is realized by hydrothermal method. MoS 2 The hollow nanosphere growth solution is placed in a high-pressure reactor (the reaction solution is generally 80% of the volume of the reactor), and the hydrothermal reaction is maintained at 200° C. for 26 hours. After the reaction was completed, it was cooled to room temperature, and the obtained sample was repeatedly washed three times with deionized water, and dried at 80°C.

[0052] The MoS obtained above 2 Nanohollow spheres (0.2 g) were dispersed in toluene solution by ultrasound. After 1h, 0.2mL APS was added to the above solution and stirred for 24h to o...

Embodiment 3

[0054] MoS 2 The composition of the hydrothermal reaction solution of hollow nanospheres is 0.88g molybdenum trioxide, 0.51g sodium fluoride, 2g potassium thiocyanate and 40mL deionized water.

[0055] The composition of NG hydrothermal reaction solution is graphene oxide 40mL, ammonia water 30mL and NaOH 90mg.

[0056] MoS 2 The synthesis of nano hollow spheres is realized by hydrothermal method. MoS 2 The hollow nanosphere growth solution is placed in a high-pressure reactor (the reaction solution is generally 80% of the volume of the reactor), and the hydrothermal reaction is maintained at 230° C. for 18 hours. After the reaction was completed, it was cooled to room temperature, and the obtained sample was repeatedly washed three times with deionized water, and dried at 80°C.

[0057] The MoS obtained above 2 Nanohollow spheres (0.8 g) were dispersed in toluene solution by ultrasound. After 1h, 0.8mL APS was added to the above solution and stirred for 24h to obtain AP...

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Abstract

The invention belongs to the technical field of hydrogen evolution electrocatalysis, and discloses an H-MoS2 / NG nanocomposite material and a preparation method and application thereof. The preparation method comprises the following steps of obtaining MoS2 nanoparticles from a growth solution of MoS2 through a hydrothermal method; mixing the MoS2 nanoparticles and aminopropyl triethoxy silane into a solvent and stirring to obtain APS-modified MoS2 nanoparticles; and putting the APS-modified MoS2 nanoparticles into a nitrogen-doped graphene precursor solution and obtaining the H-MoS2 / NG nanocomposite material of the nitrogen-doped graphene-coated MoS2 nanoparticles through the hydrothermal method. According to the method, the composite material with nitrogen-doped graphene coating outer layers of hollow spherical MoS2 nanoparticles is prepared, the contact area of effective electron transfer is improved and active sites are increased, so that the conductivity is strengthened; and the H-MoS2 / NG nanocomposite material has the characteristics of high mechanical strength, high specific surface area, high conductivity, low cost, abundant resources and excellent hydrogen-evolution catalytic performance, and can be used for the field of hydrogen evolution electrocatalysis.

Description

technical field [0001] The invention belongs to the technical field of hydrogen evolution electrocatalysis, in particular to a kind of H-MoS 2 / NG nanocomposites and their preparation methods and applications. Background technique [0002] One of the biggest challenges for mankind in the 21st century is undoubtedly the storage and conversion of energy. Modern society consumes vast amounts of chemical energy stored in fossil fuels, which remain relatively inexpensive to extract and distribute. However, the burning of fossil fuels pollutes the air and contributes to global warming; the extraction and distribution of fossil fuels cause other environmental problems; and the conservation of fossil fuels is an expense. These social costs can no longer be ignored. In a global economy, a sustainable modern society must derive large amounts of clean electricity from renewable sources such as solar, wind and tidal power, in addition to electricity from hydropower and biofuels. One...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/58H01M4/86H01M4/88H01M4/90
CPCH01M4/58H01M4/8652H01M4/88H01M4/90Y02E60/10Y02E60/50
Inventor 邱文达黎彧游遨张泽敏
Owner GUANGDONG IND TECHN COLLEGE
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