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Rodlike bismuth oxide and preparation method thereof

A technology of bismuth oxide and bismuth trioxide, which is applied in chemical instruments and methods, inorganic chemistry, bismuth compounds, etc., achieves the effects of low production cost, wide application prospect and strong chemical stability

Inactive Publication Date: 2013-05-15
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, micron-sized rod-shaped bismuth oxide materials with high aspect ratio have not been reported

Method used

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  • Rodlike bismuth oxide and preparation method thereof
  • Rodlike bismuth oxide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 4 grams of bismuth oxycarbonate to 2 milliliters of concentrated nitric acid, add 35 milliliters of deionized water after initial stirring, and continue stirring for dissolution and dilution. Then, the above solution was added to 110 ml of ammonia solution with a mass fraction of 15%, and stirred rapidly while adding to form a uniform suspension. Then the suspension was put into a 200 ml Teflon-lined stainless steel autoclave and reacted at a temperature of 383K for 48 hours. After the reaction is finished, the precipitated product is washed with deionized water and dried to obtain a rod-shaped bismuth oxide product.

[0024] Bismuth oxide (Bi 2 o 3 ) crystal form is consistent with the standard powder diffraction card (JCPDS: 76-1730), the shape is rod-shaped, the diameter is between 2-3 microns, the length is between 30-50 microns, the aspect ratio is greater than 10, and the purity is between More than 99%.

Embodiment 2

[0026] Add 1.5 grams of bismuth nitrate pentahydrate into 1 ml of concentrated nitric acid, add 20 ml of deionized water after initial stirring, and continue stirring for dissolution and dilution. Then, the above solution was added to 50 ml of ammonia solution with a mass fraction of 20%, and stirred rapidly while adding dropwise to form a uniform suspension. Then the suspension was put into a 100 ml Teflon-lined stainless steel autoclave and reacted at a temperature of 393K for 24 hours. After the reaction is finished, the precipitated product is washed with deionized water and dried to obtain a rod-shaped bismuth oxide product.

[0027] Bismuth oxide (Bi 2 o 3 ) is consistent with the standard powder diffraction card (JCPDS: 76-1730). More than 99%.

Embodiment 3

[0029] Add 1 gram of bismuth oxycarbonate to 0.5 milliliters of concentrated nitric acid, add 10 milliliters of deionized water after initial stirring, and continue stirring for dissolution and dilution. Then, the above solution was added to 30 milliliters of sodium hydroxide solution with a substance concentration of 3 mol / liter, and was stirred rapidly while adding dropwise to form a uniform suspension. Then the suspension was put into a 50 ml Teflon-lined stainless steel autoclave and reacted at a temperature of 423 K for 12 hours. After the reaction is finished, the precipitated product is washed with deionized water and dried to obtain a rod-shaped bismuth oxide product.

[0030] Bismuth oxide (Bi 2 o 3 ) crystal form is consistent with the standard powder diffraction card (JCPDS: 76-1730). More than 99%.

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Abstract

The invention relates to a rodlike bismuth oxide and a preparation method thereof. The rodlike bismuth oxide has a diameter of 0.5-3 microns, a length of 10-60 microns, a length-diameter ratio of over 10, and purity over 99%. The preparation method specifically consists of: acidifying certain amount of a bismuth salt by nitric acid, then adding deionized water, carrying out stirring dissolving, then adding the solution into an ammonia water, sodium hydroxide or potassium hydroxide solution, and performing a one-step hydro-thermal treatment so as to obtain the rod-like bismuth oxide. The preparation method provided by the invention has the characteristics of no environmental pollution, simple process, wide adjustable range of parameters, strong repeatability, as well as low production cost, thus being applicable to mass industrial production. The prepared rodlike bismuth oxide can be widely used in industrial catalysis, the medical industry, the special glass manufacturing industry, the electronic industry, new materials, and other fields.

Description

technical field [0001] The invention relates to a bismuth oxide and a preparation method thereof, in particular to a rod-shaped bismuth trioxide crystal material and a preparation method thereof, belonging to the technical field of inorganic nanometer materials and synthesis. Background technique [0002] Bismuth oxide is an important functional material with unique physical and chemical properties and is widely used in various fields. It is not only a good organic synthesis catalyst, ceramic colorant, plastic flame retardant, pharmaceutical astringent, glass additive, high refractive glass and nuclear engineering glass manufacturing and fuel for nuclear reactors, but also an important dopant in the electronics industry Powder materials are also widely used in electrolyte materials, optoelectronic materials, and high-temperature superconducting materials. [0003] The traditional methods for preparing bismuth oxide include fire method and wet method. The fire method is to f...

Claims

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Application Information

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IPC IPC(8): C01G29/00B82Y40/00
Inventor 赵斌林琳殷天惠何丹农
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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