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Method for preparing differently morphological hydroxyapatite by using waste shell

A hydroxyapatite and morphology technology, applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems of long synthesis time, complex process steps, high preparation cost, and achieve good ion adsorption and exchangeability, The effect of reducing the reaction conditions and simplifying the process

Inactive Publication Date: 2016-07-27
浙江海富海洋生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For the current preparation of hydroxyapatite with different shapes, there are many problems such as large difference in shape, wide size distribution, easy agglomeration, the need to introduce shape regulators or surface regulators, or the disadvantages of complex process steps, long synthesis time, and high preparation costs. , the present invention proposes a method for preparing hydroxyapatite with different shapes by using discarded shells, the technical scheme is as follows:

Method used

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  • Method for preparing differently morphological hydroxyapatite by using waste shell
  • Method for preparing differently morphological hydroxyapatite by using waste shell
  • Method for preparing differently morphological hydroxyapatite by using waste shell

Examples

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Embodiment 1

[0031] Such as figure 1 As shown, respectively weigh 1.00 g of shell powder and 0.792 g of diammonium hydrogen phosphate according to the calcium-phosphorus atomic ratio of 1.67, add them into 250 ml of distilled water to fully dissolve, and stir evenly. Slowly add ammonia water dropwise to the mixed reaction solution to adjust the pH, so that the pH=9-10. The adjusted reaction mixture solution was placed in a water bath for heating, and kept at a constant temperature for 2 hours when the temperature reached 95° C., and cooled after the reaction was complete. Suction filter the reactant cooled to room temperature, wash with distilled water and absolute ethanol in sequence, and finally put it into a constant temperature drying oven, keep the temperature at 105°C and dry for 8 hours to obtain ribbon-shaped hydroxyapatite powder.

example 2

[0033] Such as figure 2 As shown, weigh 1.00g of shell powder, 0.396g of diammonium hydrogen phosphate, and 0.345g of ammonium dihydrogen phosphate according to the calcium-phosphorus atomic ratio of 1.67, add them into 250ml of distilled water to fully dissolve, and stir evenly. Slowly add ammonia water dropwise to the mixed reaction solution to adjust the pH, so that the pH=11-12. The adjusted reaction mixture solution was placed in a water bath for heating, and kept at a constant temperature for 3 hours when the temperature reached 85° C., and cooled after the reaction was complete. Suction filter the reactant cooled to room temperature, wash with distilled water and absolute ethanol in sequence, and finally put it into a constant temperature drying oven, keep the temperature at 100°C and dry for 4 hours to obtain flaky hydroxyapatite powder.

example 3

[0035] Such as image 3 As shown, weigh 1.00g of shell powder, 6.6g of diammonium hydrogen phosphate, and 1.15g of ammonium dihydrogen phosphate according to the calcium-phosphorus atomic ratio of 1.67, add them into 250ml of distilled water to fully dissolve, and stir evenly. Slowly add ammonia water dropwise to the mixed reaction solution to adjust the pH, so that the pH=13-14. The adjusted reaction mixture solution was placed in a water bath for heating, and kept at a constant temperature for 4 hours when the temperature reached 97° C., and cooled after the reaction was complete. Suction filter the reactant cooled to room temperature, wash with distilled water and absolute ethanol in sequence, and finally put it into a constant temperature drying oven, keep the temperature at 110°C and dry for 3 hours to obtain spherical hydroxyapatite powder.

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Abstract

The invention discloses a method for preparing differently morphological hydroxyapatite by using waste shells and belongs to the field of inorganic synthesis. The differently morphological hydroxyapatite is prepared under a constant-temperature water bath condition by using waste shells as a calcium source, using ammonium phosphate as a phosphorus source and regulating a pH value through ammonia water; in a process, the waste shells are used as raw materials, no morphology regulating agent or other surfactant is added, and the pH value is regulated in a constant-temperature water bath reaction process to achieve the purpose of preparing the differently morphological hydroxyapatite. The method for preparing the differently morphological hydroxyapatite by using the waste shells has the features of mild reaction conditions, high product purity, no impurities and stable quality, the production cost is low, no waste is discharged, the process flow is short, the synthesis time is short, the differently morphological hydroxyapatite with a higher utilization value is produced, and a new direction is opened for industrial production of morphologically controllable hydroxyapatite.

Description

technical field [0001] The invention belongs to the field of inorganic synthesis and discloses a method for preparing hydroxyapatite with different shapes by using discarded shells. Background technique [0002] Hydroxyapatite (hydroxyapatite) is the main inorganic component of human hard tissue, and its molecular formula is Ca 10 (PO 4 ) 6 (OH) 2 , its chemical composition and crystal structure are very close to the mineral composition of vertebrate bones and teeth, and has excellent biocompatibility and bioactivity. Hydroxyapatite crystals with different crystal morphology have different properties such as surface properties, crystallization process and biological activity, which lead to different ways of development and application. Hydroxyapatite with different shapes can be used in orthopedic materials and human soft tissue repair, toothpaste filling, industrial wastewater treatment, drinking water purification and many other fields. At present, the synthesis of hy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/32
CPCC01B25/32C01P2004/03
Inventor 赵宏赵斌元李树安陈丽杨威刘茫茫尹福军
Owner 浙江海富海洋生物科技有限公司
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