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Preparation of molybdenum ditelluride nanowire material and molybdenum ditelluride nanowire material

A technology of molybdenum ditelluride and nanowires, which is applied in the field of nanomaterials, can solve the problems of unsynthesized molybdenum ditelluride nanowires, and achieve the effect of simple preparation process

Active Publication Date: 2019-02-15
NORTHWEST UNIV(CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, some scientific researchers have engaged in the preparation of two-dimensional molybdenum ditelluride materials and achieved certain results, but have not synthesized one-dimensional molybdenum ditelluride nanowires.

Method used

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  • Preparation of molybdenum ditelluride nanowire material and molybdenum ditelluride nanowire material
  • Preparation of molybdenum ditelluride nanowire material and molybdenum ditelluride nanowire material
  • Preparation of molybdenum ditelluride nanowire material and molybdenum ditelluride nanowire material

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Embodiment 1

[0031] This embodiment provides a method for preparing molybdenum ditelluride nanowires on a silicon dioxide / silicon substrate, comprising the following steps:

[0032] Step 1: Cut the silica / silicon substrate into a 1cm*3cm sheet and blow it off with an air gun;

[0033] Step 2: Grind molybdenum powder and tellurium powder at a molar ratio of 1:4, mix well, place 2 mg of mixed powder on a silicon dioxide / silicon substrate, and add 0.1 mg of sodium chloride; A silicon dioxide / silicon substrate, SiO 2 Face down, upside down on the wafer;

[0034] Step 3: Place two silica / silicon substrates in a quartz tube with an inner diameter of 1.2 mm and one-end sealing, place the single-end-sealed quartz tube at the heating center of the tube atmosphere furnace, and single-end-seal the quartz tube The opening faces the side of the exhaust port, such as figure 1 as shown in a.

[0035] Step 4: Infuse 100 sccm of argon gas for 30 minutes to completely remove residual oxygen in the tube....

Embodiment 2

[0038] This embodiment provides a method for preparing molybdenum ditelluride nanowires on a silicon dioxide / silicon substrate, comprising the following steps:

[0039] Step 1: Cut the silica / silicon substrate into a 1cm*3cm sheet and blow it off with an air gun;

[0040] Step 2: Grind molybdenum powder and tellurium powder at a molar ratio of 1:12, mix them evenly, place 3 mg of mixed powder on a silicon dioxide / silicon substrate, and add 0.2 mg of sodium chloride; A silicon dioxide / silicon substrate, SiO 2 Face down, upside down on the wafer;

[0041] Step 3: Place two silica / silicon substrates in a quartz tube with an inner diameter of 1.2 mm and one-end sealing, place the single-end-sealed quartz tube at the heating center of the tube atmosphere furnace, and single-end-seal the quartz tube The opening faces the side of the exhaust port, such as figure 1 as shown in a.

[0042] Step 4: Infuse 100 sccm of argon gas for 30 minutes to completely remove residual oxygen in t...

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Abstract

The invention discloses preparation of a molybdenum ditelluride nanowire material and the molybdenum ditelluride nanowire material. A silicon dioxide / silicon wafer is used as a substrate; molybdenum powder and tellurium powder are used as raw materials; molybdenum ditelluride nanowires are grown on a silica surface of the substrate by a chemical vapor deposition method; a growth container of the molybdenum ditelluride nanowires is a quartz tube; a mixed gas of argon and hydrogen is introduced into the quartz tube; a quartz test tube is further arranged in the quartz tube; a sealed end of the quartz test tube is opposite to a flowing direction of the mixed gas; the quartz test tube is used for placing the substrate for chemical vapor deposition; the flow rate of argon is 100 sccm; the flowrate of hydrogen is 5-30 sccm; and the reaction temperature of the chemical vapor deposition is 600-800 DEG C. The preparation provided by the invention is simple in process, low in cost and high in quality of molybdenum ditelluride nanowires.

Description

technical field [0001] The invention belongs to the field of nanometer materials, and relates to the preparation of a molybdenum ditelluride nanowire material and the molybdenum ditelluride nanowire material. Background technique [0002] Molybdenum ditelluride is an important member of the family of transition metal dichalcogenides TMDs. It is a new type of two-dimensional material. It has attracted widespread attention due to its unique electrical and optical properties. Composed of molybdenum atoms in the middle, tellurium atoms in the upper and lower layers, the molybdenum atom layer in the middle is sandwiched between the upper and lower tellurium atoms, forming a sandwich structure together, in the layer, molybdenum atoms and six tellurium atoms pass through of covalent bonds. Molybdenum ditelluride semimetal is a quantum spin Hall insulator with a large band gap, which can be used in field effect transistors. In addition, due to the overlap of energy bands and Fermi ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B19/04B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B19/007C01P2002/82C01P2004/16
Inventor 许曼章张志勇刘政赵武闫军锋贠江妮翟春雪郭昱希李强王学文郑璐
Owner NORTHWEST UNIV(CN)
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