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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

[0012] X=0.5, Y=0.2, R=Fe 3+ Carry Ti 4+ Hydroxyapatite adsorption-disinfection material

[0013] 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 Fe 0.2 )(PO 4 ) 6 (OH) 2 . 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 whit...

Embodiment 2

[0016] X=2, Y=0.01, R=Ag + Carry Ti 4+ Hydroxyapatite adsorption-disinfection material

[0017] 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 . 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 4 The 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 pr...

Embodiment 3

[0020] X=6, Y=0.02, R=Ce 4+ Carry Ti 4+ Hydroxyapatite adsorption-disinfection material

[0021] 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 . 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...

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PUM

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Abstract

A sterilization material with hydroxyapatite carried Ti4+ nano-power belongs to material field with its chemical composition formula is (Ca 10-x-y TixRy)(PO4)6(OH)2; wherein, x=0.5~6, y=0.01~0.2, R is Fe3+, Ag+ or Ce4+; crystal phase is hydroxyapatite phase; crystal structure is hexagonal crystallization. By carrying Ti4+ and a little Fe3+, Ag+ or Ce4+, obtain mentioned sterilization material with hydrothermal method. The product has good function of absorption and photocatalysis sterilization, not only under ultraviolet ray, but also can decompose pollution on sunshine.

Description

technical field [0001] The present invention relates to a nanopowder material, specifically, a Ti 4+ The invention relates to a hydroxyapatite nanometer powder adsorption 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. However, first, because the concentration of pollutants in ...

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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