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A kind of preparation method of bismuth vanadate-limonite compound

A technology of limonite and bismuth vanadate, which is applied in the field of composites, can solve the problem that the synthesis technology of bismuth vanadate and natural minerals has not been written, and achieve the effects of improved dispersion, high activity, and increased composite probability

Active Publication Date: 2020-05-01
合肥杰通环境技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to further improve the catalytic performance of bismuth vanadate, people have studied and prepared bismuth vanadate doping systems, such as Ag-doped bismuth vanadate, Cu-doped bismuth vanadate, etc., but for the synthesis of bismuth vanadate and natural minerals Technology has not yet been written and studied

Method used

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  • A kind of preparation method of bismuth vanadate-limonite compound
  • A kind of preparation method of bismuth vanadate-limonite compound
  • A kind of preparation method of bismuth vanadate-limonite compound

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Embodiment 1

[0036] A kind of preparation method of bismuth vanadate-limonite compound, described preparation method comprises the steps:

[0037] S1. Add limonite powder to the bismuth nitrate pentahydrate solution, stir once, add ammonium metavanadate solution under strong magnetic stirring to obtain a mixture solution, adjust the mixture solution to acidity, and stir twice to obtain A solution;

[0038] S2, placing solution A in an atmosphere of high-pressure steam, heating, cooling, washing, and filtering to obtain filtered precipitates;

[0039] S3. Baking and calcining the filtered precipitate to obtain a bismuth vanadate-limonite composite.

Embodiment 2

[0041] A kind of preparation method of bismuth vanadate-limonite compound, described preparation method comprises the steps:

[0042] S1. Add limonite powder to the bismuth nitrate pentahydrate solution, stir once, add ammonium metavanadate solution under strong magnetic stirring to obtain a mixture solution, adjust the pH value of the mixture solution to 4 with hydrochloric acid, and stir twice to obtain A solution;

[0043] S2, placing the A solution in a stainless steel high-pressure steam reactor, heating in an oven, cooling, repeatedly washing with distilled water and ethanol, and filtering to obtain a filtered precipitate;

[0044] S3. Baking the filtered precipitate in an oven and then calcining it in a muffle furnace to obtain a bismuth vanadate-limonite composite.

[0045] Wherein, in S1, the time of one stirring is 10min;

[0046] In S1, the time of secondary stirring is 50min;

[0047] The concentration of the hydrochloric acid is 1mol / L;

[0048] In S1, the sol...

Embodiment 3

[0059] A kind of preparation method of bismuth vanadate-limonite compound, described preparation method comprises the steps:

[0060] S1. Add limonite powder to the bismuth nitrate pentahydrate solution, stir once, add ammonium metavanadate solution under strong magnetic stirring to obtain a mixture solution, adjust the pH value of the mixture solution to 6 with hydrochloric acid, and stir twice to obtain A solution;

[0061]S2, placing the A solution in a stainless steel high-pressure steam reactor, heating in an oven, cooling, repeatedly washing with distilled water and ethanol, and filtering to obtain a filtered precipitate;

[0062] S3. Baking the filtered precipitate in an oven and then calcining it in a muffle furnace to obtain a bismuth vanadate-limonite composite.

[0063] Wherein, in S1, the time of one stirring is 50min;

[0064] In S1, the time of secondary stirring is 10min;

[0065] The concentration of the hydrochloric acid is 3mol / L;

[0066] In S1, the solv...

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Abstract

The invention discloses a preparation method of a bismuth vanadate-limonite compound. The preparation method comprises the following steps: S1, adding limonite powder into a cerium nitrate pentahydrate solution, stirring the mixture once, adding an ammonium metavanadate solution into the mixture along with strong magnetization stirring to obtain a mixture solution, adjusting pH of the mixture solution to less than 7, and carrying out secondary stirring to obtain a solution A, S2, putting the solution A into a high-pressure steam atmosphere, and carrying out heating, cooling, washing and filtration to obtain filtered precipitates, and S3, baking and calcining the filtered precipitates to obtain the bismuth vanadate-limonite compound. The preparation method can improve the degradation rate of the bismuth vanadate-limonite compound to carbon disulfide.

Description

technical field [0001] The invention relates to the technical field of composites, in particular to a preparation method of a bismuth vanadate-limonite composite. Background technique [0002] In 1964, for the first time, bismuth vanadate (BiVO) with a structure derived from monoclinic brownstone was synthesized artificially. 4 ). Since then, people have conducted more and more extensive research on the properties, applications and preparation of bismuth vanadate. Bismuth vanadate is a light yellow inorganic pigment with excellent properties such as non-toxicity, good corrosion resistance, bright color, iron elasticity, photocatalysis and environmental friendliness. [0003] Bismuth vanadate is usually prepared by hydrothermal synthesis. Hydrothermal synthesis refers to a soft chemical method for preparing inorganic materials in a closed reactor (in an autoclave, under high temperature and high pressure conditions. The powder prepared by this method has many advantages. S...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/847
CPCB01J23/002B01J23/8472B01J2523/00B01J2523/54B01J2523/55B01J2523/842
Inventor 邓呈逊俞志敏路思恒鲍腾卫新来
Owner 合肥杰通环境技术有限公司
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