Spherical nano-porous hydroxylapatite prepared through shells and preparation method thereof
A hydroxyapatite and nanoporous technology, applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems of waste and utilization of shell resources, and achieve uniform particle size, cheap and easy-to-obtain raw materials, and mild preparation conditions. Effect
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[0030] Example 1
[0031] After the mussel shells are washed and dried, they are ground into powder with a particle size of 100 meshes. 0.5g of shell powder is added to the beaker; 20mL of acetic acid solution with a concentration of 0.1g / mL is added, reacted for 1h, centrifuged, and the supernatant is taken. Dilute with deionized water to 50mL; take 50mL of 0.06mol / LH 3 PO 4 Solution, while stirring, add H at a rate of 10 drops / min 3 PO 4 The solution was added dropwise to the solution; then 0.4mmol of trisodium citrate was added to the mixed solution, stirred and reacted for 30 minutes, and then 6g of urea was added; the obtained mixed solution was placed in a water bath at 90°C, stirred and reacted for 5 minutes, and left to stand to Precipitation occurred; finally, the obtained precipitate was filtered, washed twice with deionized water, twice with ethanol, and dried at 70° C. for 24 hours to obtain spherical hydroxyapatite particles.
[0032] The spherical nanoporous hydroxyap...
Example Embodiment
[0034] Example 2
[0035] After the mussel shells are washed and dried, they are ground into powder with a particle size of 100 meshes. 0.5g of shell powder is added to the beaker; 20mL of acetic acid solution with a concentration of 0.1g / mL is added, reacted for 1h, centrifuged, and the supernatant is taken. Dilute with deionized water to 50mL; take 50mL of 0.12mol / LH 3 PO 4 Solution, while stirring, add H at a rate of 10 drops / min 3 PO 4 The solution was added dropwise to the solution; then 0.4mmol of trisodium citrate was added to the mixed solution, stirred and reacted for 30 minutes, and then 6g of urea was added; the obtained mixed solution was placed in a water bath at 90°C, stirred and reacted for 5 minutes, and left to stand to Precipitation occurred; finally, the obtained precipitate was filtered, washed twice with deionized water, twice with ethanol, and dried at 70° C. for 24 hours to obtain spherical hydroxyapatite particles.
Example Embodiment
[0036] Example 3
[0037] After washing and drying the oyster shell, grind it into a powder with a particle size of 200 mesh. Take 0.5g of shell powder and add it to the beaker; add 20ml of acetic acid solution with a concentration of 0.1g / mL, react for 1h, centrifuge and take the supernatant. Dilute with deionized water to 50mL; take 50mL of 0.06mol / LH 3 PO 4 Solution, while stirring, add H at a rate of 20 drops / min 3 PO 4 The solution was added dropwise to the solution; then 0.6mmol of trisodium citrate was added to the mixed solution, stirred and reacted for 30 minutes, and then 6g of urea was added; the prepared mixed solution was placed in a water bath at 80°C, stirred and reacted for 5 minutes, and allowed to stand until Precipitation occurred; finally, the obtained precipitate was filtered, washed twice with deionized water, twice with ethanol, and dried at 70° C. for 24 hours to obtain spherical hydroxyapatite particles.
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