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 high cost, harsh conditions, and low crystallinity, and achieve simplified production processes and improved Crystallinity, energy saving effect

Inactive Publication Date: 2009-04-29
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

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Embodiment 1

[0026] (1) Dissolve 0.05mol calcium nitrate in a beaker filled with 30mL water, and dissolve 0.5g sodium dodecylsulfonate in a beaker filled with 30mL ethanol solution to obtain sodium dodecylsulfonate ethanol solution The mixed solution is then preheated to 60°C and mixed, then added to a flask with a reflux device, stirred evenly under the condition of 60°C, and kept warm for 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 2g of sodium hydroxide in 20mL of water, and then add 20mL 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, quickly add them to the flask in step (1) in sequence, raise the temperature to reflux temperature of 90°C, perform hydrothermal reaction for 14 hours, and stop Stir and heat.

[0030] (5) ...

Embodiment 2

[0034] The diammonium hydrogen phosphate in the step (2) in the embodiment 1 is replaced by the ammonium dihydrogen phosphate, and other steps are with embodiment 1. Obtain product with embodiment 1.

Embodiment 3

[0036] The ethanol solution consumption of step (1) in embodiment 1 and the ethanol consumption of step (2) (3) are halved, and reflux temperature is 92 ℃, and other steps are with embodiment 1. Obtain product with embodiment 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 invention relates to calcium phosphate, specifically a method for preparing ordered nano-hydroxyapatite polycrystalline powder. Background technique [0002] The chemical structure 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, chromatography materials, filter materials, adsorption materials and carrier materials. [0003] Ordered nanostructured hydroxyapatite is composed of nano-hydroxyapatite single crystal units assembled in an orderly manner in space. It has the characteristics of nano-hydroxyapatite, such as high specific surface area, high reaction Activity; and the characteristics of ordered nanostructures, such as special optical, electrical, and magnetic properties, so ordered nanostructured hydroxyapatite has a wide range of applications i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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