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Method for synthesizing nanometer bismuth oxycarbonate through room-temperature solid phase chemical reaction

A bismuth oxycarbonate, chemical reaction technology, applied in chemical instruments and methods, nanotechnology for materials and surface science, inorganic chemistry, etc., can solve difficulties in realizing large-scale industrial production, product particle agglomeration, and increase preparation costs problem, to achieve the effect of easy industrial production, simple process and simple preparation process

Active Publication Date: 2018-06-19
BENGBU COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the above preparation methods can prepare bismuth oxycarbonate, they all need to use solvents, and some synthesis processes need to use reaction aids such as surfactants to assist, and some need to use expensive reaction raw materials. The process is complicated and requires high temperature and high pressure. and other conditions, greatly increasing the preparation cost, it is difficult to realize large-scale industrial production
At the same time, the preparation of nanomaterials by the liquid phase method is also prone to agglomeration of product particles.
It is well known that the preparation of nanomaterials by the solid-phase method can overcome some shortcomings of the liquid-phase method, but there are few literatures on the preparation of bismuth oxycarbonate by the solid-phase method, which needs further development and research

Method used

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  • Method for synthesizing nanometer bismuth oxycarbonate through room-temperature solid phase chemical reaction
  • Method for synthesizing nanometer bismuth oxycarbonate through room-temperature solid phase chemical reaction
  • Method for synthesizing nanometer bismuth oxycarbonate through room-temperature solid phase chemical reaction

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh 0.01 mole of sodium bismuthate dihydrate and 0.01 mole of oxalic acid dihydrate according to a molar ratio of 1:1 and add them into a 50 mL zirconia ball mill jar equipped with 50 zirconia balls with a diameter of 6 mm and 8 zirconia balls with a diameter of 10 mm. The QM-3SP04 planetary high-energy ball mill was continuously ball-milled at 480 rpm for 1.5 hours, the product was washed with distilled water, centrifuged and vacuum-dried at 60° C. and 0.1 Mpa vacuum for 2 hours to obtain the target product.

Embodiment 2

[0021] Weigh 0.01 mole of sodium bismuthate dihydrate and 0.01 mole of oxalic acid dihydrate according to a molar ratio of 1:1 and add them into a 50 mL zirconia ball mill jar equipped with 50 zirconia balls with a diameter of 6 mm and 8 zirconia balls with a diameter of 10 mm. The QM-3SP04 planetary high-energy ball mill was continuously ball-milled at 480 rpm for 2 hours, the product was washed with distilled water, centrifuged and vacuum-dried at 60° C. and 0.1 Mpa vacuum for 2 hours to obtain the target product.

Embodiment 3

[0023] Weigh 0.01 mole of sodium bismuthate dihydrate and 0.01 mole of oxalic acid dihydrate according to a molar ratio of 1:1 and add them into a 50 mL zirconia ball mill jar equipped with 50 zirconia balls with a diameter of 6 mm and 8 zirconia balls with a diameter of 10 mm. The QM-3SP04 planetary high-energy ball mill was continuously ground at 480rpm for 10 hours, the product was washed with distilled water, centrifuged and vacuum-dried at 60°C and 0.1Mpa vacuum for 2 hours to obtain the target product.

[0024] The X-ray diffraction analysis (XRD analysis) of above-mentioned embodiment gained target product: the target product that embodiment 1, embodiment 2 and embodiment 3 make and raw material sodium bismuthate dihydrate are carried out XRD analysis respectively, and the results are shown in figure 1 , it can be seen that in the XRD pattern of the product obtained in Example 1, Bi 2 o 2 CO 3 In addition to the characteristic diffraction peaks, there is also a small ...

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Abstract

The invention discloses a method for synthesizing nanometer bismuth oxycarbonate through a room-temperature solid phase chemical reaction. The method comprises the following steps: mixing solid phaseraw materials sodium bismuthate dihydrate and oxalic acid dehydrate according to a certain molar ratio, then performing a ball-milling solid phase reaction, and washing, centrifuging and drying the obtained product to obtain the target product nanometer bismuth oxycarbonate. Solid mixing and the raw material room-temperature ball-milling solid phase reaction are adopted, so the preparation processis simple, and the agglomeration of product particles is easily controlled and greatly reduced; and addition of a redox agent, a template and a solvent is avoided, so the purity of the product is improved, green synthesis requirements of the above material are met, and the method is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of nanometer materials and their preparation, in particular to a preparation method of nanobismuth oxycarbonate. Background technique [0002] Bismuth oxycarbonate (Bi 2 o 2 CO 3 ), also known as bismuth subcarbonate, has important applications in many fields. At present, bismuth oxycarbonate has been widely used in the pharmaceutical industry as an astringent, an X-ray diagnostic sunscreen, and can be used to treat gastritis, bacillary dysentery, diarrhea, and enteritis. In addition, bismuth oxycarbonate can be used to manufacture bismuth salts, enamel fluxes, pearlescent plastic additives, etc. Bismuth oxycarbonate, as one of the representatives of bismuth-based compound semiconductors with an Aurivillius-type oxide structure, has a typical "sillén" structure, namely (Bi 2 o 2 ) 2+ Atomic layer, (CO 3 ) 2- A layered structure in which atomic layers are arranged alternately. The strong built-in electric fie...

Claims

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Application Information

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IPC IPC(8): C01G29/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G29/00
Inventor 张茂林葛金龙刘伟王传虎高燕
Owner BENGBU COLLEGE
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