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Preparation method and application of porous single-layer MoS1.85 nanonet

A technology of mos1.85 and nanonet, applied in the direction of catalyst activation/preparation, chemical instruments and methods, electrode shape/type, etc., can solve the problems that are not suitable for large-scale synthesis and require high temperature, so as to facilitate transmission and transfer, The effect of speeding up the speed and the method is simple and easy

Active Publication Date: 2018-01-12
HENAN INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is only suitable for flat molybdenum disulfide and requires high temperature, which is not suitable for large-scale synthesis

Method used

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  • Preparation method and application of porous single-layer MoS1.85 nanonet
  • Preparation method and application of porous single-layer MoS1.85 nanonet
  • Preparation method and application of porous single-layer MoS1.85 nanonet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The porous monolayer MoS of this example 1.85 The preparation method of nanonet, the steps are as follows:

[0030] (1) Preparation of MoS by hydrothermal method 2 Nanosheets;

[0031] 1) Mix 67.5 mg sodium molybdate and 135.0 mg thiourea (the molar ratio of Mo / S is 1:6.5) and 30 mL deionized water to obtain mixture A;

[0032] 2) Stir mixture A into a transparent solution, put it in a 40 mL hydrothermal reaction kettle, heat it at 220°C for 10 hours, and obtain sample B after precipitation and filtration;

[0033] 3) B was naturally cooled to room temperature, washed with ethanol, and dried at 60 °C for 12 hours to obtain multilayer MoS 2 Nanosheets;

[0034] (2) Treating MoS by grinding ball method 2 Nanosheets: take 5 g MoS 2 Nanosheets and 100 g of 10 mm stainless steel balls were put into a ball mill, and the balls were milled for 26 hours at a speed of 300 rpm in an argon atmosphere;

[0035] (3) Preparation of MoS by ultrasonic method in aqueous solution ...

Embodiment 2

[0039] The porous, monolayer MoS of this example 1.85 The preparation method of nanonet, the steps are as follows:

[0040] (1) Preparation of MoS by hydrothermal method 2 Nanosheets:

[0041] 1) Mix 45.0 mg sodium molybdate and 90.0 mg thiourea (the molar ratio of Mo / S is 1:6.5) and 20 mL deionized water to obtain mixture A;

[0042] 2) Stir the mixture A into a transparent solution, put it in a 40 mL hydrothermal reaction kettle, heat it at 180°C for 26 hours, and obtain sample B after precipitation and filtration;

[0043] 3) B was naturally cooled to room temperature, washed with ethanol, and dried at 80 °C for 12 hours to obtain multilayer MoS 2 Nanosheets;

[0044] (2) Treating MoS by grinding ball method 2 Nanosheets: take 5 g MoS 2 Nanosheets and 125 g of 10 mm stainless steel balls were put into a ball mill, and the balls were milled at a speed of 400 rpm for 24 hours in an argon atmosphere;

[0045] (3) Preparation of MoS by ultrasonic method in aqueous soluti...

Embodiment 3

[0048] The porous, monolayer MoS of this example 1.85 The preparation method of nanonet, the steps are as follows:

[0049] (1) Preparation of MoS by hydrothermal method 2 Nanosheets:

[0050] 1) Mix 56.3 mg sodium molybdate and 112.5 mg thiourea (the molar ratio of Mo / S is 1:6.5) and 25 mL deionized water to obtain mixture A;

[0051] 2) Stir the mixture A into a transparent solution, put it in a 40 mL hydrothermal reaction kettle, heat it at 200°C for 20 hours, and obtain sample B after precipitation and filtration;

[0052] 3) B was naturally cooled to room temperature, washed with ethanol, and dried at 70 °C for 12 hours to obtain multilayer MoS 2 Nanosheets;

[0053] (2) Treating MoS by grinding ball method 2 Nanosheets: take 5 g MoS 2 Nanosheets and 150 g of 10 mm stainless steel balls were put into a ball mill, and the balls were milled at a speed of 500 rpm for 22 hours in an argon atmosphere;

[0054] (3) Preparation of MoS by ultrasonic method in aqueous solut...

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Abstract

The invention discloses a preparation method of a porous single-layer MoS1.85 nanonet. The preparation method comprises the following steps: a hydrothermal method is adopted to prepare a MoS2 nanosheet; a ball mill rotates or vibrates to enable a stainless steel ball to fiercely impact the MoS2 nanosheet, defects are introduced onto the MoS2 nanosheet, and MoS2 is stripped; the MoS2 nanosheet processed by the ball milling method is placed into a beaker containing water, ultrasonic treatment is performed for 4-8 h under the ultrasonic conditions of 15-25 DEG C and 100-200 W to obtain a black precipitate; and the black precipitate is washed with ethyl alcohol and ammonium hydroxide for several times and dried at 40-60 DEG C for 10 h to obtain the porous single-layer MoS1.85 nanonet. The ballmilling method and the ultrasonic auxiliary method are adopted to prepare a catalyst, and the preparation method is simple, feasible, green and environmentally friendly, and can quickly realize large-scale preparation of the porous single-layer MoS1.85 nanonet.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, in particular to a porous single-layer MoS 1.85 Preparation method of nanomesh and its application in electrocatalytic hydrogen production. Background technique [0002] In recent years, the energy crisis and environmental pollution caused by the combustion of fossil fuels have attracted widespread attention. This forces people to seek new energy sources that can replace fossil fuels to achieve sustainable development in the future. Hydrogen, as a clean and renewable energy source, has been considered as one of the best candidates. Among them, a common method is the electrocatalytic hydrogen production from water. However, this method has not been widely used because the catalysts used to produce hydrogen are scarce on earth and expensive. Therefore, it is of great theoretical and practical significance for the development and utilization of hydrogen energy to find and develo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051B01J35/10B01J37/00B01J37/10B01J37/34C25B1/04C25B11/03C25B11/06
CPCY02E60/36
Inventor 李玥王龙禄高风仙宋育泽赵龙涛
Owner HENAN INST OF ENG
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