Nitrogen/sulfur-doped three-dimensional carbon nano-network supporting molybdenum disulfide nano-material and preparation of the nano-material

A molybdenum disulfide, network loading technology, applied in electrodes, electrolysis process, electrolysis components, etc., can solve the problems of unfavorable catalytic performance, poor conductivity of MoS2, etc., and achieve the effects of excellent morphology, good performance and good dispersion.

Inactive Publication Date: 2018-03-02
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But MoS 2 The conductivity itself is poor, which is not conducive to its catalytic performance.

Method used

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  • Nitrogen/sulfur-doped three-dimensional carbon nano-network supporting molybdenum disulfide nano-material and preparation of the nano-material
  • Nitrogen/sulfur-doped three-dimensional carbon nano-network supporting molybdenum disulfide nano-material and preparation of the nano-material
  • Nitrogen/sulfur-doped three-dimensional carbon nano-network supporting molybdenum disulfide nano-material and preparation of the nano-material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 3.8g citric acid, 0.24g melamine, 0.25g ammonium paramolybdate tetrahydrate and 2.8g Na 2 SO 4 , dissolve the mixture in 50ml of deionized water, stir and dissolve with a magnetic stirrer at a stirring speed of 300r / min to form a solution, then use an ultrasonic device with a power of 400W for 15min, mix evenly and place in a freezer to freeze until the solution is completely After freezing, it was placed in a freeze dryer at -50°C for vacuum drying to obtain a mixture. Grind the mixture, take 10g of the mixed powder and place it in the ark, put the ark into the tube furnace, pass in 200ml / min Ar inert gas for 30min to remove the air, then use 200ml / min Ar as the carrier gas, and set the temperature at 10°C The temperature was raised to 750°C at a heating rate of 1 / min, and the carbonization reaction was carried out at a heat preservation time of 2 hours. After the reaction was completed, it was cooled to room temperature under the protection of an Ar atmosphere ...

Embodiment 2

[0021] Weigh 3.8g citric acid, 0.24g melamine, 0.25g ammonium paramolybdate tetrahydrate and 2.8g Na 2 SO 4 , dissolve the mixture in 50ml of deionized water, stir and dissolve with a magnetic stirrer at a stirring speed of 300r / min to form a solution, then use an ultrasonic device with a power of 400W for 15min, mix evenly and place in a freezer to freeze until the solution is completely After freezing, it was placed in a freeze dryer at -50°C for vacuum drying to obtain a mixture. Grind the mixture, take 10g of the mixed powder and place it in the ark, put the ark into the tube furnace, pass in 200ml / min Ar inert gas for 30min to remove the air, then use 200ml / min Ar as the carrier gas, and set the temperature at 10°C The temperature was raised to 700°C at a heating rate of / min, and the carbonization reaction was carried out at a heat preservation time of 2 hours. After the reaction was completed, it was cooled to room temperature under the protection of an Ar atmosphere t...

Embodiment 3

[0023] Weigh 3.8g citric acid, 0.24g melamine, 0.5g ammonium paramolybdate tetrahydrate and 2.8g Na 2 SO 4 , dissolve the mixture in 50ml of deionized water, stir and dissolve with a magnetic stirrer at a stirring speed of 300r / min to form a solution, then use an ultrasonic device with a power of 400W for 15min, mix evenly and place in a freezer to freeze until the solution is completely After freezing, it was placed in a freeze dryer at -50°C for vacuum drying to obtain a mixture. Grind the mixture, take 10g of the mixed powder and place it in the ark, put the ark into the tube furnace, pass in 200ml / min Ar inert gas for 30min to remove the air, then use 200ml / min Ar as the carrier gas, and set the temperature at 10°C The temperature was raised to 750°C at a heating rate of 1 / min, and the carbonization reaction was carried out at a heat preservation time of 2 hours. After the reaction was completed, it was cooled to room temperature under the protection of an Ar atmosphere t...

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Abstract

The invention relates to a nitrogen/sulfur-doped three-dimensional carbon nano-network supporting molybdenum disulfide nano-material, and a preparation method and an application of same. The nano-material is formed by supporting molybdenum disulfide nano-sheets on a nitrogen/sulfur-doped three-dimensional carbon nano-network, wherein the molybdenum disulfide nano-sheets are 100-300 nm in size, thickness of the nitrogen/sulfur-doped three-dimensional carbon is 1-10 nm, and radius of the three-dimensional graphene network is 10-50 [mu]m. Mass percentage ratio of the molybdenum disulfide to the total carbon quantity is 0.3-0.8:0.5-0.2.

Description

technical field [0001] The invention relates to a three-dimensional carbon nano-network loaded molybdenum disulfide (MoS) doped with nitrogen and sulfur 2 ) The preparation method and application of nanomaterials belong to the field of electrocatalytic hydrogen evolution materials. Background technique [0002] With the increasingly prominent environmental and energy issues, people urgently need to seek renewable energy sources and energy carriers. h 2 It is a rich and renewable clean energy that can be used as an energy carrier to replace fossil fuels. produce H 2 The methods include methane gas reforming, photocatalytic water splitting, electrocatalytic water splitting and other methods. Electrocatalytic water splitting to generate H 2 is one of the most efficient and clean mass-produced H 2 Therefore, people have extensively studied highly efficient electrocatalysts. Currently, the most efficient electrocatalyst is Pt, but the high cost and limited reserves of Pt l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B11/06
CPCC25B1/04C25B11/091Y02E60/36
Inventor 何春年刁乐晨赵乃勤师春生刘恩佐马丽颖何芳李家俊
Owner TIANJIN UNIV
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