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Method of preparing ordered nano hydroxyl apatite polycrystal powder

A technology of nano-hydroxyapatite and polycrystalline powder, which is applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems of harsh conditions, high cost, and low crystallinity, so as to improve crystallinity and save energy. Energy consumption, the effect of simplifying the production process

Inactive Publication Date: 2007-10-24
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to provide a preparation method of ordered nano-hydroxyapatite polycrystalline powder, using anionic surfactant sodium dodecylsulfonate as template agent, using water in ethanol-water system Preparation of hydroxyapatite polycrystalline powder with highly ordered, spatially symmetrical nano-layered structure and good crystallinity by thermal method to overcome the complex process, harsh conditions and limitations of existing nano-hydroxyapatite powder preparation methods Disadvantages of high cost, low crystallinity and low order degree of hydroxyapatite nanocrystals or lack of spatial symmetry

Method used

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  • Method of preparing ordered nano hydroxyl apatite polycrystal powder
  • Method of preparing ordered nano hydroxyl apatite polycrystal powder
  • Method of preparing ordered nano hydroxyl apatite polycrystal powder

Examples

Experimental program
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Effect test

Embodiment 1

[0026] (1) Dissolve 0.05 mol of calcium nitrate in a beaker containing 30 mL of water, and dissolve 0.5 g of sodium dodecyl sulfonate in a beaker containing 30 mL of ethanol solution to obtain an ethanol solution of sodium dodecyl sulfonate The mixed solution is then preheated to 60°C and mixed, then added to a flask with a reflux device, stirred evenly under electromagnetic conditions at 60°C, and kept warm for later use.

[0027] (2) Dissolve 0.03 mol of diammonium hydrogen phosphate in 30 mL of water, and then add 30 mL of ethanol to prepare a mixture of diammonium hydrogen phosphate and ethanol for use.

[0028] (3) Dissolve 2 g of sodium hydroxide in 20 mL of water, and then add 20 mL of ethanol to prepare a sodium hydroxide-ethanol mixture for use.

[0029] (4) Preheat the mixed solution prepared in steps (2) and (3) to 60°C, and quickly add it to the flask in step (1) in turn, raise the temperature to the reflux temperature of 90°C, and stop the hydrothermal reaction for 14...

Embodiment 2

[0034] The diammonium hydrogen phosphate in step (2) in Example 1 was replaced with ammonium dihydrogen phosphate, and the other steps were the same as in Example 1. The product obtained is the same as in Example 1.

Embodiment 3

[0036] The amount of ethanol solution used in step (1) and the amount of ethanol used in step (2) (3) in Example 1 were halved, and the reflux temperature was 92° C., and the other steps were the same as in Example 1. The product obtained is the same as in Example 1.

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Abstract

The invention discloses a making method of sequent hydroxy phosphorite polycrystalline powder and calcium phosphate, which comprises the following steps: mixing 30% 0. 00167mol calcium nitrate per ml water and 15-60% 0. 0033-0. 0667g sodium dodecylbenzene sulfonate per ml alcohol; placing the mixed solution in the flask with reflux device; adding the composite solution with 30% ammonium monohydric phosphate at 0. 01mol phosphor / ml water solution and 15-60% alcohol and the composite solution with 20% sodium hydroxide solution at 0. 05-0. 1g sodium per ml water and 10-40% alcohol; heating to the refluxing temperature at 88-92 deg. c to do hydrothermal reaction at 4-14h; centrifuging; separating; drying the white sediment under 60-80 deg. c; obtaining the product with good crystallizing degree, high-sequent (spatial symmetry) nanometer layered polycrystalline structure; simplifying the method and reducing the cost.

Description

Technical field [0001] The technical scheme of the present invention relates to calcium phosphate, specifically a method for preparing ordered nano-hydroxyapatite polycrystalline powder. Background technique [0002] The chemical structural formula of hydroxyapatite is Ca 10 (PO 4 ) 6 (OH) 2 , Is the main inorganic component of human and vertebrate bones and teeth. Because of its good biocompatibility and surface activity, it is widely used as bioceramic materials, chromatographic materials, filter materials, adsorption materials and carrier materials. [0003] Ordered nanostructured hydroxyapatite is composed of nano-hydroxyapatite single crystal units arranged in an orderly manner. It has the characteristics of nano-hydroxyapatite, such as high specific surface area and high reaction. Reactivity; also has the characteristics of ordered nanostructures, such as special optical, electrical, and magnetic properties, so ordered nanostructured hydroxyapatite has a wide range of appli...

Claims

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Application Information

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IPC IPC(8): C01B25/32
Inventor 刘超成国祥纪秀杰李养贤
Owner HEBEI UNIV OF TECH
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