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Method for preparing V2O5 nano-powders

A nano-powder, V2O5 technology, applied in the field of material science, can solve the problems of long experimental period, high requirements for experimental equipment, complex operation process, etc.

Active Publication Date: 2012-06-20
启东晟涵医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the operation process of the above method is relatively complicated, the experimental period is long, and the requirements for experimental equipment are relatively high.

Method used

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  • Method for preparing V2O5 nano-powders

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] 1) First, add 20ml of deionized water and 2.34g of NH to the beaker 4 VO 3 While stirring, slowly add 3ml of ammonia water with a mass concentration of 8%, and continue to stir until the NH 4 VO 3 After completely dissolving, add 10ml dimethyl sulfoxide and stir evenly to obtain solution A;

[0014] 2) Place solution A in an ultrasonic generator with a water bath temperature of 70°C and an ultrasonic power of 200W, then slowly add 25ml of hydrogen peroxide solution with a mass concentration of 3% to it, and react for 5 hours to obtain a light orange-red suspension Liquid B;

[0015] 3) Centrifuge the suspension B at a speed of 4000r / min, wash it repeatedly with deionized water and isopropanol to obtain a light orange-red fine powder, soak the obtained powder in isopropanol, and Dry in an electric blast oven at 30°C for 8 hours to obtain V 2 o 5 Nano powder.

Embodiment 2

[0017] 1) First, add 30ml of deionized water and 2.34g of NH to the beaker 4 VO 3 While stirring, slowly add 45ml of ammonia water with a mass concentration of 5%, and continue to stir until the NH 4 VO 3 After completely dissolving, add 5ml dimethyl sulfoxide and stir evenly to obtain solution A;

[0018] 2) Place solution A in an ultrasonic generator with a water bath temperature of 50°C and an ultrasonic power of 400W, then slowly add 5ml of hydrogen peroxide solution with a mass concentration of 8% to it, and react for 2 hours to obtain a light orange-red suspension Liquid B;

[0019] 3) Centrifuge the suspension B at a speed of 4000r / min, wash it repeatedly with deionized water and isopropanol to obtain a light orange-red fine powder, soak the obtained powder in isopropanol, and Dry in an electric blast oven at 120°C for 1 hour to obtain V 2 o 5 Nano powder.

Embodiment 3

[0021] 1) First, add 40ml of deionized water and 2.34g of NH to the beaker 4 VO 3 While stirring, slowly add 5ml of ammonia water with a mass concentration of 3%, and continue to stir until the NH 4 VO 3 After completely dissolving, add 7ml dimethyl sulfoxide and stir evenly to obtain solution A;

[0022] 2) Place solution A in an ultrasonic generator with a water bath temperature of 55°C and an ultrasonic power of 300W, then slowly add 15ml of hydrogen peroxide solution with a mass concentration of 5% to it, and react for 4 hours to obtain a light orange-red suspension Liquid B;

[0023] 3) Centrifuge the suspension B at a speed of 4000r / min, wash it repeatedly with deionized water and isopropanol to obtain a light orange-red fine powder, soak the obtained powder in isopropanol, and Dry in an electric blast oven at 80°C for 5 hours to obtain V 2 o 5 Nano powder.

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Abstract

A method for preparing V2O5 nano-powders comprises the following steps: firstly, de-ionized water, NH4VO3, ammonia water and dimethyl sulfoxide are stirred uniformly to obtain a solution A; the solution A is filled into an ultrasonic generator, and a hydrogen peroxide solution is also added into the ultrasonic generator to obtain a suspension liquid B; the suspension liquid B is centrifugally separated and washed repeatedly by de-ionized water and isopropanol to obtain light yellowish-red fine powders, and the fine powders obtained are soaked into isopropanol, and then are dried to obtain theV2O5 nano-powders. In the invention, an ultrasonic sol-gel method combining an ultrasonic cavitation technology and a sol-gel method is adopted to prepare the V2O5 nanocrystal with low cost. The method not only reduces the reaction time but also can prepare the V2O5 nano-powders with uniform sizes and single phase.

Description

technical field [0001] The invention belongs to the field of material science, in particular to a method for preparing V 2 o 5 nanopowder method. Background technique [0002] V 2 o 5 It is a cathode material with a layered structure. It has the characteristics of large ion implantation amount and high efficiency density. It can be used as a lithium ion implantation material and has wide applications in rechargeable lithium batteries, thin film lithium batteries, electrochromic devices, catalysis and sensors. prospect. V 2 o 5 Easily obtained from sols and stable colloidal particles. [0003] The current traditional sol-gel method is to prepare V 2 o 5 The most common method [M.Gotic; S.Popovic; M.Ivanda; S.Music.Materials Letters 57 (2003) 3186-3192] of nanopowder mainly utilizes ammonium metavanadate [Victor L, James MH.Chem Mater, 1997, 9(12): 2731-2744], vanadium pentoxide [Gerald GJ, Arthur D, Guo J, et al.Chem Mater, 1996, 8(8): 2096-2101], vanadium alkoxide ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G31/02B82Y40/00
Inventor 黄剑锋温泉曹丽云
Owner 启东晟涵医疗科技有限公司
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