Bismuth-bismuth tungstate- bismuth oxybromide ternary composite and preparation method and application thereof

A ternary compound, bismuth oxybromide technology, applied in alkali metal compounds, chemical instruments and methods, water treatment of special compounds, etc., can solve the problem that the quantum yield does not meet expectations, achieve strong adsorption and visible light degradation, The effect of large specific surface area

Active Publication Date: 2019-09-17
JILIN JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Bi 2 WO 6 The quantum yield is far from expected, and its modification can effectively improve the photocatalytic efficiency

Method used

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  • Bismuth-bismuth tungstate- bismuth oxybromide ternary composite and preparation method and application thereof
  • Bismuth-bismuth tungstate- bismuth oxybromide ternary composite and preparation method and application thereof
  • Bismuth-bismuth tungstate- bismuth oxybromide ternary composite and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Preparation of Bismuth-Bismuth Tungstate-Bismuth Oxybromide Ternary Composite

[0048] (1) preparation concentration is the bismuth nitrate ethylene glycol solution A of 0.1M;

[0049] (2) Prepare a sodium tungstate glycol solution with a concentration of 0.05M so that the molar ratio of bismuth nitrate and sodium tungstate is 2:1; then add potassium bromide so that the molar ratio of sodium tungstate and potassium bromide is 1:0.5, after stirring evenly, the ethylene glycol solution B of sodium tungstate and potassium bromide is obtained;

[0050] (3) Slowly add the ethylene glycol solution B of sodium tungstate and potassium bromide dropwise to the ethylene glycol solution A of bismuth nitrate, control the dropping time for 10 minutes, and then stir for 10 minutes to obtain a uniform mixed solution;

[0051] (4) Transfer the mixed solution to a polytetrafluoroethylene liner with a steel jacket, place it in an oven for solvothermal reaction, the reaction temperature i...

Embodiment 2

[0064] Preparation of Bismuth-Bismuth Tungstate-Bismuth Oxybromide Ternary Composite

[0065] (1) preparation concentration is the bismuth nitrate ethylene glycol solution A of 1M;

[0066] (2) Prepare a sodium tungstate glycol solution with a concentration of 0.5M, so that the molar ratio of bismuth nitrate and sodium tungstate is 2:1; then add potassium bromide, so that the molar ratio of sodium tungstate and potassium bromide is 1:5, after stirring evenly, the ethylene glycol solution B of sodium tungstate and potassium bromide is obtained;

[0067] (3) Slowly add the ethylene glycol solution B of sodium tungstate and potassium bromide dropwise to the ethylene glycol solution A of bismuth nitrate, control the dropping time for 40 minutes, and then stir for 60 minutes to obtain a uniform mixed solution;

[0068] (4) Transfer the mixed solution to a polytetrafluoroethylene liner with a steel jacket, place it in an oven for solvothermal reaction, the reaction temperature is 2...

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Abstract

The invention discloses a bismuth-bismuth tungstate-bismuth oxybromide ternary compound and a preparation method and application thereof. The method comprises the following steps of: adding bismuth nitrate into ethylene glycol, and uniformly stirring to obtain a solution A; adding sodium tungstate and potassium bromide into ethylene glycol, and uniformly stirring to obtain a solution B; dripping the solution B into the solution A, and uniformly stirring to obtain a mixed solution; and transferring the mixed solution to a hydrothermal kettle for solvothermal reaction, wherein the molar ratio of bismuth nitrate, sodium tungstate and potassium bromide in the mixed solution is 2: 1: (0.5-5). The Bi / Bi2WO6 / BiOBr ternary compound with nano structure prepared by the method has strong adsorption and visible light degradation effects on cationic dye rose red B in water.

Description

technical field [0001] The invention belongs to the field of semiconductor nanomaterials, and in particular relates to the preparation of compound semiconductor nanomaterials containing bismuth, bismuth tungstate and bismuth oxybromide, a preparation method thereof, and an application for sewage treatment. Background technique [0002] With the rapid development of my country's industry, the problem of water pollution has become increasingly serious, and sewage treatment has attracted widespread attention. There are various methods of sewage treatment, including adsorption, photocatalysis, chemical deposition, chemical oxidation, and biodegradation. Among them, the adsorption method is a simple, low-cost and high-efficiency sewage treatment technology. Commonly used adsorbents include activated carbon, graphene, and natural polymer materials, but the high price and complicated processing of these materials limit their development. In recent years, nanomaterial adsorbents w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/28B01J20/30B01J27/132B01J35/02C02F1/28C02F1/30C02F1/72C02F101/30
CPCB01J20/06B01J20/0288B01J20/28007B01J20/28057B01J27/132B01J35/004B01J35/023C02F1/281C02F1/30C02F1/725C02F2305/10C02F2101/308
Inventor 肖姗姗毕菲赵丽王立艳盖广清
Owner JILIN JIANZHU UNIVERSITY
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