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A kind of tungsten disulfide nanopowder material with aluminum sulfide shell and its preparation method

A tungsten disulfide, nano-powder technology, applied in aluminum sulfide, chemical instruments and methods, nanotechnology for materials and surface science, etc. simple conditional effect

Active Publication Date: 2015-12-09
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The search showed that with Al 2 S 3 Shell WS 2 Nano powder material has not been reported

Method used

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  • A kind of tungsten disulfide nanopowder material with aluminum sulfide shell and its preparation method
  • A kind of tungsten disulfide nanopowder material with aluminum sulfide shell and its preparation method
  • A kind of tungsten disulfide nanopowder material with aluminum sulfide shell and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Will figure 1 The upper cover 1 of the device shown is opened, and graphite is used as the cathode 2 to fix it on the chuck 8. The composition of the consumed anode target 4 is a block made of pure tungsten powder and pure aluminum powder (atomic ratio 99:1). It is placed on the copper anode 7 passing through the cooling water, and there is a graphite crucible 9 between the copper anode passing through the cooling water and the target. A distance of 30 mm is maintained between the cathode graphite electrode and the anode tungsten aluminum powder block. Cover the upper cover 1 of the device, pass cooling water a, and after the whole working chamber is evacuated through the valve 3, argon gas b and hydrogen sulfide gas c are passed in, the partial pressure of argon gas is 0.5Mpa, and the partial pressure of hydrogen sulfide gas is 0.3Mpa , Connect the DC pulsating power supply 10 with a voltage of 40V. During the arc discharge process, adjust the working current and vol...

Embodiment 2

[0025] Will figure 1 The upper cover 1 of the device shown is opened, and graphite is used as the cathode 2 to fix it on the chuck 8. The composition of the consumed anode target 4 is a block made of pure tungsten powder and pure aluminum powder (atomic ratio 95:5). It is placed on the copper anode 7 passing through the cooling water, and there is a graphite crucible 9 between the copper anode passing through the cooling water and the target. Keep a distance of 2 mm between the cathode graphite electrode and the anode tungsten aluminum powder block. Cover the upper cover 1 of the device, pass cooling water a, and after the whole working chamber is evacuated through the valve 3, argon gas b and hydrogen sulfide gas c are passed in, the partial pressure of argon gas is 0.01Mpa, and the partial pressure of hydrogen sulfide gas is 0.01Mpa , and connect the DC pulse power supply 10 with a voltage of 10V. During the arc discharge process, adjust the working current and voltage to ...

Embodiment 3

[0027] Will figure 1 The upper cover 1 of the device shown is opened, and graphite is used as the cathode 2 to fix it on the chuck 8. The composition of the consumed anode target 4 is a block made of pure tungsten powder and pure aluminum powder (atomic ratio 98:2). It is placed on the copper anode 7 passing through the cooling water, and there is a graphite crucible 9 between the copper anode passing through the cooling water and the target. A distance of 10 mm is maintained between the cathode graphite electrode and the anode tungsten aluminum powder block. Cover the upper cover 1 of the device, pass cooling water a, and after the whole working chamber is evacuated through the valve 3, argon gas b and hydrogen sulfide gas c are passed in, the partial pressure of argon gas is 0.1Mpa, and the partial pressure of hydrogen sulfide gas is 0.1Mpa , Connect the DC pulsating power supply 10 with a voltage of 20V. During the arc discharge process, adjust the working current and vol...

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Abstract

The invention discloses a tungsten disulfide (WS2) nano powder material with an aluminum sulfide (Al2S3) shell, and a preparation method of the WS2 nano powder material, belonging to the technical field of preparation of nano materials. The nano powder material has a core-shell structure, wherein the inner core of the core-shell structure is WS2 nano-particles, and the shell of the core-shell structure is an Al2S3 layer; the inner core of the WS2 has the particle sizes of 10-100nm, and the Al2S3 shell layer is an amorphous Al2S3 layer and has the thickness of 1-10nm. According to the preparation method, tungsten powder and aluminum powder are pressed into a block according to a certain atomic percent by a plasma arc discharge method, and the block is taken as an anode material; graphite is taken as a cathode material; argon and hydrogen sulfide are taken as working gases; a certain distance is maintained between the cathode and the anode, and arc discharge is realized between the cathode and the anode, so that the WS2 nano powder material with the Al2S3 shell can be obtained. The preparation process is simple, the working procedure of aftertreatment is not needed, the cost is low, and industrial production can be easily realized.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanomaterials, in particular to a 2 S 3 ) shell of tungsten disulfide (WS 2 ) Nano powder material and preparation method thereof. Background technique [0002] Metal sulfides are a very important class of semiconductor materials. The broad application prospects of metal sulfide nanomaterials in photocatalytic materials, luminescent materials, nonlinear optical materials and photosensitive sensor materials have aroused strong research interest. Sulfide semiconductors play an increasingly important role in our production and life. As a unique property of WS 2 , also attracts special attention, because when the temperature exceeds its critical temperature, WS 2 There will be a change in magnetic and conductive properties. It has a wide range of applications in solar cells, hydrodesulfurization catalytic reactions, as well as photoconductive materials and cathode materials for lithium-s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G41/00C01F7/70B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01F7/70C01G41/00C01P2004/64
Inventor 孙玉萍刘先国赵越李成涛
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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