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Preparation method of V0.6Cr0.4O2 aciculate nanomaterial

A technology of nanoneedle and reaction system, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc. It can solve the problems of complex process, less doping amount, and no research reports on nanoneedle materials. Achieve the effect of simple production process, good crystallinity and low cost

Inactive Publication Date: 2013-01-02
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are complex and the doping amount is relatively small
[0006] At present, for a large number of chromium-modified vanadium oxide nanomaterials, the formation of chromium oxide-vanadium oxide composite oxide V 0.6 Cr 0.4 o 2 Nanoacicular materials have not been reported yet

Method used

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  • Preparation method of V0.6Cr0.4O2 aciculate nanomaterial
  • Preparation method of V0.6Cr0.4O2 aciculate nanomaterial
  • Preparation method of V0.6Cr0.4O2 aciculate nanomaterial

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 120ml deionized water in the hydrothermal kettle, then add 7.23g Cr(NO 3 ) 3 9H 2 O, stir until completely dissolved to obtain a light green clear chromium nitrate solution. Then add 1.5gVO 2 micron-sized particles. Seal the hydrothermal kettle, and conduct a hydrothermal reaction at 190° C. for 48 hours. The product after the hydrothermal reaction was filtered, washed with deionized water, and dried at 110°C to obtain V 0.6 Cr 0.4 o 2 nanoneedle materials. Elemental analysis proved its chemical composition to be V 0.6 Cr 0.4 o 2 , The shape of the nano-acicular material is consistent, the crystallinity is good, the length is about 1.2μm, and the diameter is about 50nm.

Embodiment 2

[0022] Adopt the preparation process of above-mentioned embodiment 1, difference is to add 16.87g Cr (NO 3 ) 3 9H 2 O, get V 0.6 Cr 0.4 o 2 nanoneedle materials. Elemental analysis proves that its chemical composition is still V 0.6 Cr 0.4 o 2 , The shape of the nano-acicular material is consistent, the crystallinity is good, the length is about 2.0 μm, and the diameter is about 70nm.

Embodiment 3

[0024] Add 1000ml deionized water in the hydrothermal kettle, then add the 2mol / L nitric acid solution of 20ml, then add 7.23g Cr(NO 3 ) 3 9H 2 O, stir until completely dissolved to obtain a light green clear chromium nitrate solution. Then add 1.5gVO 2 micron-sized particles. Seal the hydrothermal kettle, and conduct a hydrothermal reaction at 190° C. for 48 hours. The product after the hydrothermal reaction was filtered, washed with deionized water, and dried at 110°C to obtain V 0.6 Cr 0.4 o 2 nanoneedle materials. Elemental analysis proved its chemical composition to be V 0.6 Cr 0.4 o 2 , The shape of the nano-acicular material is consistent, the crystallinity is good, the length is about 2.2 μm, and the diameter is about 80nm.

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Abstract

The invention discloses a preparation method of V0.6Cr0.4O2 aciculate nanomaterial, falling into the technical field of preparation of inorganic material. With vanadium oxide micro-powder and chromium nitrate as materials, under neutral or acid condition, the preparation method directly synthesizes V0.6Cr0.4O2 aciculate nanomaterial by hydrothermal reaction. The preparation method has advantages of nontoxic and harmless materials, no need of reductant and calcining treatment, low cost, simple production process, and easy industrialized large-scale production. The V0.6Cr0.4O2 aciculate nanomaterial has length of micrometer level, diameter of tens of nanometer, high crystallization degree and purity, and consistent product shape under the same preparation conditions. Products of different dimensions can be obtained by regulating reaction system acidity or Cr addition amount within certain range. The nanomaterial can be applied in fields such as catalyst, electrochemical device, sensor, lithium ion battery material, photo-catalytic material, organic synthesis, magnetic recording material, etc.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic materials, and in particular relates to a V 0.6 Cr 0.4 o 2 Preparation method of nano needle material. Background technique [0002] Nano-vanadium dioxide material is an important inorganic material, which has broad application prospects in the fields of catalysts, electrochemical devices, sensors, lithium-ion battery materials, and photocatalytic materials. Through the doping of other metal elements, its properties can be changed and its application range can be broadened, so the doping of VO 2 The research on its preparation method is of great value. VO 2 When doping, the phase transition temperature (Tc) can be adjusted and changed, and the amount of change is related to the type and amount of doping. For example, doping Cr increases Tc, V 0.976 Cr 0.024 o 2 The Tc is 72°C. For every Mo atom equivalent to 1% of the number of V atoms, the Tc decreases by 11°C, and for ev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G37/14B82Y30/00B82Y40/00
Inventor 李志杰祖小涛
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA