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Method for controlled macroscopic preparation of molybdenum disulfide nano strip

A technology of molybdenum disulfide and nano-strips, applied in the direction of molybdenum sulfide, etc., can solve the problems of staying in theoretical calculations, high equipment requirements, and no promotion, and achieve the effects of stable properties, simple production equipment, and low cost

Active Publication Date: 2017-06-13
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the research on molybdenum disulfide so far is still at the stage of theoretical calculation, or it is prepared by physical methods.
The physical method of preparing molybdenum disulfide nanoribbons is generally to cut single-layer molybdenum disulfide (molybdenum disulfide nanotubes) by electron beam or ion beam. This method has extremely low yield and extremely high equipment requirements. Only a few laboratories This condition can be achieved, there is no possibility of promotion

Method used

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  • Method for controlled macroscopic preparation of molybdenum disulfide nano strip
  • Method for controlled macroscopic preparation of molybdenum disulfide nano strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Accurately weigh 0.753g of sulfur element and 0.452g of molybdenum trioxide strip, place sulfur element and molybdenum trioxide strip in porcelain boats respectively, and then put the porcelain boats into two In the temperature zone;

[0034] (2) Set the temperature range of the dual temperature zone tube furnace, set the temperature zone where the sulfur element is located to rise to 200°C, set the temperature zone where the molybdenum trioxide strip is located to rise to 450°C, and set the holding time to 10min;

[0035] (3) Clean the tube furnace with argon before starting heating (starting the tube furnace heating), and keep argon flowing continuously during the heating process and heat preservation process, and the argon gas flow rate is 1mL / s;

[0036] (4) After the heat preservation is completed, open the furnace to cool down quickly, and take out the porcelain boat to obtain single-layer or few-layer molybdenum disulfide nano-strips grown on the edge of the ...

Embodiment 2

[0038] (1) Accurately weigh 0.902g of elemental sulfur and 0.479g of strips of molybdenum trioxide, respectively, place the elemental sulfur and strips of molybdenum trioxide in quartz boats, and then put the quartz boats into the two chambers of the dual-temperature zone tube furnace. within a temperature zone;

[0039] (2) Set the temperature range of the tube furnace with dual temperature zones, set the temperature zone where the sulfur element is located to a temperature of 200°C, set the temperature zone where the molybdenum trioxide strip is located to a temperature of 500°C, and set the holding time to 5 minutes;

[0040] (3) After cleaning the tube furnace with argon gas, start heating the tube furnace, and keep the nitrogen gas flowing continuously, and the argon gas flow rate is 1mL / s;

[0041] (4) After the heat preservation is completed, open the furnace to quickly cool down;

[0042] (5) Set the temperature zone where the molybdenum trioxide strip is placed to ri...

Embodiment 3

[0046] (1) Accurately weigh 0.681g of elemental sulfur and 0.352g of molybdenum trioxide strips, place them in porcelain crucibles, and then put the two porcelain crucibles into the two temperature zones of the dual-temperature zone tube furnace;

[0047] (2) Set the temperature range of the dual temperature zone tube furnace: set the temperature of the temperature zone where the sulfur element is located to 300°C, set the temperature zone where the molybdenum trioxide strip is located to 750°C, and set the holding time to 40min;

[0048] (3) Clean the tube furnace with argon, start heating while keeping argon flowing continuously, the amount of argon flowing is 50mL / s;

[0049] (4) After the heat preservation is completed, the furnace is opened to cool down quickly, and the molybdenum disulfide nanoribbons grown on the edge of molybdenum dioxide with two to four layers can be obtained.

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Abstract

The invention provides a method for controlled macroscopic preparation of a molybdenum disulfide nano strip. The method comprises the following steps of (1) putting a certain amount of sulfur-containing mixture and a molybdenum trioxide template on two trays separately and then putting the two trays into two temperature zones of a dual-temperature zone tube furnace separately; (2) heating the temperature zone with the molybdenum trioxide template to 200-1500 DEG C and carrying out heat preservation for 1min to 5h; (3) heating the temperature zone with the sulfur-containing mixture to 100-900 DEG C and carrying out heat preservation for 1min to 5h; and (4) stopping heating after heat preservation is completed, and obtaining the molybdenum disulfide nano strip on the edge of a molybdenum disulfide nanosheet after cooling a hearth of the dual-temperature zone tube furnace. The production equipment is simpler; compared with an existing physical preparation method, expensive electronic beam (ion beam) equipment is not needed and the cost is low; the product molybdenum disulfide nano strip is stable in property and controllable in thickness.

Description

technical field [0001] The invention relates to the field of chemical preparation, in particular to a method for preparing molybdenum disulfide nano strips in a controlled and macroscopic manner. Background technique [0002] With the discovery and development of graphene in the past decade, two-dimensional layered materials have become the darling of materials, electrochemistry, and optics research. Among them, graphene-like two-dimensional materials represented by transition metal oxides and sulfides are also one of the research hotspots. As one of the best, molybdenum disulfide has been considered as a material with great potential due to its unique nature, especially in the application of supercapacitors and field effect transistors. [0003] Molybdenum disulfide was first widely used as a solid lubricant. Molybdenum disulfide has an energy band gap of 1.8eV, and the electron mobility of single-layer molybdenum disulfide can reach up to 500cm^2 / (V*s). These properties ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/06
CPCC01G39/06C01P2002/72C01P2004/04
Inventor 黄青松齐瑞峰毕晓峰
Owner SICHUAN UNIV
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