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Preparation method for monodisperse vanadium pentoxide hollow microsphere and application thereof

A technology of vanadium pentoxide and hollow microspheres, which is applied in the direction of vanadium oxide and nanotechnology, can solve the problems of no reports on the preparation of monodisperse vanadium pentoxide hollow microspheres, achieve rapid response-recovery characteristics, simple raw materials, The effect of simple heat treatment process

Inactive Publication Date: 2012-07-25
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The research on the preparation of oxide microspheres mainly focuses on ZnO, TiO 2 , Fe 2 o 3 , MnO 2 and Co 3 o 4 At present, most of the special morphology preparations of vanadium oxide series compounds are open layered structures, and there is no report on the preparation of monodisperse vanadium pentoxide hollow microspheres.

Method used

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  • Preparation method for monodisperse vanadium pentoxide hollow microsphere and application thereof
  • Preparation method for monodisperse vanadium pentoxide hollow microsphere and application thereof
  • Preparation method for monodisperse vanadium pentoxide hollow microsphere and application thereof

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specific Embodiment approach 1

[0014] Specific embodiment one: the preparation method of monodisperse vanadium pentoxide hollow microspheres of this embodiment is carried out according to the following steps:

[0015] One, be 30% hydrogen peroxide by mass fraction: the volume ratio of distilled water=1: (1.5~4), prepare hydrogen peroxide aqueous solution; Preparation concentration is the methanol solution of vanadium acetylacetonate of 0.015mol / L~0.033mol / L;

[0016] Two, be 1: (4~8) ratio by volume ratio and take the aqueous hydrogen peroxide solution and the methanol solution of vanadium acetylacetonate prepared in step 1, join the methanol solution of vanadium acetylacetonate by hydrogen peroxide solution, stir After 1-2 hours, transfer to a reaction kettle, and react at a temperature of 140-160°C for 8-24 hours to obtain a vanadium oxide precursor;

[0017] 3. After washing the vanadium oxide precursor obtained in step 2 with ethanol, at a temperature of 60-70°C, vacuum-dry for 10-15 hours to obtain a p...

specific Embodiment approach 2

[0019] Specific embodiment two: this embodiment is different from specific embodiment one: in step one, be 30% hydrogen peroxide by mass fraction: the volume ratio of distilled water=1: (2~3), prepare aqueous hydrogen peroxide solution. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0020] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in Step 1, a methanol solution of vanadium acetylacetonate with a molar concentration of 0.02 mol / L-0.03 mol / L is prepared. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method for a monodisperse vanadium pentoxide hollow microsphere and application thereof, which relate to a preparation method for the vanadium pentoxide hollow microsphere and the application thereof. The preparation method comprises the following steps of: 1) preparing hydrogen peroxide aqueous solution and the methanol solution of vanadium acetylacetonate; 2) weighing and mixing the hydrogen peroxide aqueous solution and the methanol solution of vanadium acetylacetonate, transferring to a reaction kettle after being stirred, and carrying out hydrothermal reaction to obtain a vanadium oxide precursor; and 3) washing the precursor with ethanol, and carrying out thermal treatment after vacuum drying to obtain the monodisperse vanadium pentoxide hollow microsphere. The preparation method for the monodisperse vanadium pentoxide hollow microsphere has the advantages of simple and abundant raw material, simple thermal treatment process and low energy consumption, and a prepared gas sensitive element has good selectivity for triethylamine gas. The hollow microsphere disclosed by the invention has an application potential in the fields of preparing construction templates, gas sensitive elements, catalytic elements, adsorption elements and the like.

Description

technical field [0001] The invention relates to a preparation method and application of vanadium pentoxide hollow microspheres. Background technique [0002] The research on the preparation of oxide microspheres mainly focuses on ZnO, TiO 2 , Fe 2 o 3 , MnO 2 and Co 3 o 4 And other traditional semiconductor materials, most of the special morphology preparations of vanadium oxide series compounds are open layered structures, but there is no report on the preparation of monodisperse vanadium pentoxide hollow microspheres. Contents of the invention [0003] The purpose of the present invention is to provide a preparation method and application of monodisperse vanadium pentoxide hollow microspheres. [0004] The preparation method of monodisperse vanadium pentoxide hollow microspheres of the present invention is carried out according to the following steps: [0005] One, be 30% hydrogen peroxide by mass fraction: the volume ratio of distilled water=1: (1.5~4), prepare h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G31/02B82Y40/00
Inventor 徐英明武敏滋霍丽华程晓丽高山赵辉
Owner HEILONGJIANG UNIV
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