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Right-angle structure vanadium pentoxide, and preparation method and purpose thereof

A vanadium pentoxide, right-angle structure technology, applied in vanadium oxide, chemical instruments and methods, other chemical processes, etc., can solve the problems of insufficient control technology of purity, nano-micro structure, cumbersome steps, complicated procedures, etc. The effect of large-scale promotion, simple preparation method and high adsorption activity

Active Publication Date: 2016-10-12
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although my country has rich reserves of vanadium resources, compared with western developed countries, there are still many deficiencies in smelting and purification technology, especially the relatively insufficient control technology for purity and nano-micro structure, which cannot meet actual needs.
[0004] Currently, in the published V 2 o 5 Among the synthetic patents, the application number is 201410446570.3. The applicant provided a new method for preparing vanadium pentoxide for Wang Xiaowei's invention patent, but the method is cumbersome, the temperature is high and consumes a lot of energy, and the particle structure is irregular; the application The invention patent No. 201410231595.1 provides a process of calcining powdered vanadium pentoxide with ammonium metavanadate, but this method is still relatively complicated and the production cost is high; the invention patent No. 201410396489.9 discloses a nano The vanadium pentoxide with grid structure and its preparation method and application have achieved certain results in the field of electrochemistry, but the method has a long production cycle and complicated procedures

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  • Right-angle structure vanadium pentoxide, and preparation method and purpose thereof
  • Right-angle structure vanadium pentoxide, and preparation method and purpose thereof
  • Right-angle structure vanadium pentoxide, and preparation method and purpose thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1: the preparation of right angle structure vanadium pentoxide

[0025] (1) At room temperature, 20 mL of concentrated nitric acid solution with a mass concentration of 65% is added to a hydrothermal kettle with a polytetrafluoroethylene liner, then 0.28 g of ammonium metavanadate is added, stirred for 20 minutes, and stirred evenly to make metavanadate Ammonium vanadate is completely dissolved to obtain a reaction solution;

[0026] (2) Transfer the reaction solution to an autoclave, and conduct a hydrothermal reaction at a constant temperature of 180° C. for 24 hours;

[0027] (3) cooling to room temperature, centrifuging the product obtained in the hydrothermal reaction in step (2), washing with distilled water and absolute ethanol two to three times respectively, and drying at 60° C. to obtain vanadium pentoxide with a right angle structure.

[0028] attached by figure 1 It can be seen that the vanadium pentoxide with right angle structure prepared by t...

Embodiment 2

[0030] Embodiment 2: the preparation of right angle structure vanadium pentoxide

[0031] (1) At room temperature, add 15 mL of concentrated nitric acid solution with a mass concentration of 65% and 5 mL of distilled water into a hydrothermal kettle with a polytetrafluoroethylene liner, then add 0.28 g of ammonium metavanadate, stir for 25 minutes, and stir evenly , the ammonium metavanadate is completely dissolved to obtain a reaction solution;

[0032] (2) Transfer the reaction solution to an autoclave, and conduct a hydrothermal reaction at a constant temperature of 160° C. for 30 hours;

[0033] (3) cooling to room temperature, centrifuging the product obtained in the hydrothermal reaction in step (2), washing with distilled water and absolute ethanol two to three times respectively, and drying at 60° C. to obtain vanadium pentoxide with a right angle structure.

[0034] The composition of the prepared catalyst was consistent with that of Example 1, and its physical prope...

Embodiment 3

[0035] Embodiment 3: the preparation of right angle structure vanadium pentoxide

[0036] (1) At room temperature, add 10 mL of concentrated nitric acid solution with a mass concentration of 65% and 10 mL of distilled water into a hydrothermal kettle with a polytetrafluoroethylene liner, then add 0.28 g of ammonium metavanadate, stir for 20 minutes, and stir well , the ammonium metavanadate is completely dissolved to obtain a reaction solution;

[0037] (2) Transfer the reaction solution to an autoclave, and conduct a hydrothermal reaction at a constant temperature of 140° C. for 48 hours;

[0038] (3) cooling to room temperature, centrifuging the product obtained in the hydrothermal reaction in step (2), washing with distilled water and absolute ethanol two to three times respectively, and drying at 60° C. to obtain vanadium pentoxide with a right angle structure.

[0039] The composition of the prepared catalyst was consistent with that of Example 1, and its physical proper...

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Abstract

The invention discloses right-angle structure vanadium pentoxide, and a preparation method and a purpose thereof. The preparation method comprises the following steps that (1) at a room temperature, a concentrated nitric acid solution is added into an autoclave with a polytetrafluoroethylene liner; then, ammonium metavanadate is added; uniform stirring is performed, so that the ammonium metavanadate is completely dissolved to obtain reaction liquid; (2) reaction liquid is transferred into an autoclave, and the constant-temperature hydrothermal reaction is performed for 3 to 48 hours at 120 to 180 DEG C; (3) products obtained after the hydrothermal reaction in the second step are centrifuged, washed and dried at 55 to 65 DEG C, and the right-angle structure vanadium pentoxide is obtained. The preparation method is simple; the structure of the prepared vanadium pentoxide is novel; the specific surface area is large; the adsorption activity is high.

Description

technical field [0001] The invention specifically relates to a right-angle structure vanadium pentoxide and its preparation method and application. Background technique [0002] Due to the development of major industries, environmental pollution has intensified. In environmental protection, adsorption technology has always played an important role. Adsorption is mainly a method to remove impurities and pollutants from gas and liquid media, and to separate pollutant components. The preparation of efficient adsorbents is one of the keys to the application of adsorption technology. [0003] As an optoelectronic material, vanadium pentoxide has been widely used in microwave, energy storage and various optoelectronic devices. The band gap of vanadium pentoxide is about 2.2eV, which can absorb solar energy in a wide spectral range. Although our country is rich in vanadium resource reserves, there are still many deficiencies in smelting and purification technology compared with w...

Claims

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Application Information

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IPC IPC(8): C01G31/02B01J20/06B01J20/30C02F1/28
CPCB01J20/06C01G31/02C01P2002/72C01P2004/03C01P2004/61C02F1/281
Inventor 滕飞杨洋阚艳东杨黎明徐娟
Owner NANJING UNIV OF INFORMATION SCI & TECH