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Method for preparing Ti4+ supported hydroxyapatite nano powder absorbing disinfection material

A hydroxyapatite and nano-powder technology, applied in the field of materials, can solve the problems of not fully reflecting the advantages of titanium-loaded hydroxyapatite materials, reducing the photocatalytic performance, affecting the use efficiency, etc., achieving good adsorption and solving continuous use. , the effect of improving the efficiency of use

Inactive Publication Date: 2005-11-30
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Third, TiO 2 Photocatalysts may exhibit photocatalytic activity only when they are irradiated by ultraviolet light, which affects their use efficiency
Its shortcoming is: this titanium-loaded hydroxyapatite material, Ti 4+ The ion content is high, the hydroxyapatite is amorphous, and the photocatalytic performance is greatly reduced, which affects the application of the material. At the same time, no Fe 3+ , Ag + and Ce 4+ Elements, cannot fully reflect the advantages of titanium-loaded hydroxyapatite materials, and the antibacterial efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] This example material has an ivory white appearance. Tested with XRD, it shows that its structure is hexagonal structure, and its main compound is hydroxyapatite Ca 10 (PO 4 ) 6 (OH) 2 . X=0.5, Y=0.2, R=Fe 3+ Carry Ti 4+ Hydroxyapatite adsorption-disinfection material, determine the chemical expression of the material (Ca 9.3 Ti 0.5 Ag 0.2 )(PO 4 ) 6 (OH) 2 .

[0015] Synthesis of nanoscale Ti supports by hydrothermal method 4+ The hydroxyapatite adsorption and disinfection material is firstly configured with a (Ca+Ti+Fe) composite solution, and the (NH 4 )H 2 PO 4 The solution was stirred and dropped into the (Ca+Ti+Fe) composite solution at a temperature of 100° C., wherein the molar ratio of (Ca+Ti+Fe) / P was 1.9. Then add ammonia water or acid dropwise to adjust the pH of the solution and keep it at a pH of 8. After three times of centrifugation and washing, the white precipitate A was obtained; the white precipitate A was put into a hydrothermal rea...

Embodiment 2

[0018] The material of this example is white in appearance. Tested with XRD, it shows that its structure is hexagonal structure, and its main compound is hydroxyapatite Ca 10 (PO 4 ) 6 (OH) 2 . X=2, Y=0.01, R=Ag + Carry Ti 4+ Hydroxyapatite adsorption-disinfection material, determine the chemical expression of the material (Ca 7.99 Ti 2 Ag 0.01 )(PO 4 ) 6 (OH) 2 .

[0019] Synthesis of nanoscale Ti supports by hydrothermal method 4+ The hydroxyapatite adsorption and disinfection material is firstly configured with a (Ca+Ti+Ag) composite solution, and the (NH 4 )H 2 PO 4The solution was stirred and dropped into the (Ca+Ti+Ag) composite solution at a temperature of 60° C., wherein the molar ratio of (Ca+Ti+Ag) / P was 1.7. Then add ammonia water or acid dropwise to adjust the pH of the solution and keep it at a pH of 14. After three times of centrifugation and washing, the white precipitate A was obtained; the white precipitate A was put into a hydrothermal reacti...

Embodiment 3

[0022] The material of this example is white in appearance. Tested with XRD, it shows that its structure is hexagonal structure, and its main compound is hydroxyapatite Ca 10 (PO 4 ) 6 (OH) 2 . X=6, Y=0.02, R=Ce 4+ Carry Ti 4+ Hydroxyapatite adsorption disinfection material, determine the chemical expression of the material (Ca 3.98 Ti 6 Ce 0.02 )(PO 4 ) 6 (OH) 2 .

[0023] Synthesis of nanoscale Ti supports by hydrothermal method 4+ The hydroxyapatite adsorption and disinfection material is firstly configured with a (Ca+Ti+Ce) composite solution, and the (NH 4 )H 2 PO 4 The solution was stirred and dropped into the (Ca+Ti+Ce) composite solution at a temperature of 20° C., wherein the molar ratio of (Ca+Ti+Ce) / P was 1.50. Then add ammonia water or acid dropwise to adjust the pH of the solution and keep it at a pH of 12. After three times of centrifugation and washing, the white precipitate A was obtained; the white precipitate A was put into a hydrothermal rea...

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PUM

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Abstract

A preparation method for sterilization material with hydroxyapatite carried Ti4+ nano-power belongs to material field, which includes carrying Ti4+ and Fe, Ag or Ce, obtaining the disclosed material with hydrothermal method. Its chemical composition formula is (Ca 10-x-y Tix R y) (PO4)6(OH)2; wherein, x=0.5~6, y=0.01~0.2, R is Fe3+, Ag+ or Ce4+. The preparation comprises the following steps, preparing composite solution with (Ca+Ti+R), dropping ammonia water or acid; centrifugally separating for three times and water scrubbing to obtain write precipitate, loading into reaction kettle, carrying out hydrothermal reaction; then taking out reactants, proceeding centrifugal separation for three times and water scrubbing to dry. The product has good function of absorption and photocatalysis sterilization.

Description

technical field [0001] The present invention relates to a method for preparing a nanopowder material, specifically, a Ti-carrier 4+ The invention discloses a preparation method of a hydroxyapatite nanometer powder adsorption and disinfection material, which belongs to the technical field of materials. Background technique [0002] In modern life, Pb, Cd, Cu and other heavy metal ions, CO, SO 2 , NO x Harmful gases such as formaldehyde and benzene, organic dyes such as methylene blue and rhodamine, bacteria such as Escherichia coli and Staphylococcus aureus have seriously endangered human health. Photocatalytic degradation technology can be carried out under normal temperature and pressure, and can completely destroy pollutants, without secondary pollution and cost. where TiO 2 It has the advantages of good photocatalytic activity, strong corrosion resistance, high stability, relatively low price and non-toxic to human body, and is recognized as the best photocatalyst. H...

Claims

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Application Information

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IPC IPC(8): B01J20/06
Inventor 胡安民常程康李明毛大立雷同
Owner SHANGHAI JIAO TONG UNIV
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