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TiO2/titanium supported hydroxyapatite complex phase absorption and disinfection nano material

A titanium-loaded hydroxyapatite and hydroxyapatite technology, applied in the field of materials, can solve the problems of difficult to obtain chemically bonded hydroxyapatite composite materials, only considering the biocompatibility and antibacterial properties of the materials, and affecting the use efficiency. , to achieve the effect of high chemical stability, strong corrosion resistance and low price

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 shortcomings are: 1. Only consider the material biocompatibility and antibacterial properties, 2. The composite material prepared by the sol-gel method is a physical mixture, and it is difficult to obtain chemically bonded hydroxyapatite / TiO 2 composite materials, while TiO 2 It mainly exists in the form of amorphous state, and the material has no photocatalytic performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] x=0.05, y=0.95, z=3, TiO 2 / Titanium-loaded hydroxyapatite complex phase adsorption and disinfection nanomaterials

[0010] The material of this example is white in appearance. Tests show that its main compound is TiO in nano anatase crystal form 2 and hydroxyapatite complex. Its chemical expression is 0.05TiO 2 / {0.95(Ca7Ti 3 )(PO 4 ) 6 (OH) 2}. The material is resistant to heavy metal ions such as Pb, Cd, Cu, CO, SO 2 , NO x Harmful gases such as formaldehyde, benzene and other organic volatiles, organic dyes such as methylene blue and rhodamine, bacteria such as Escherichia coli and Staphylococcus aureus have strong adsorption capacity, and can degrade formaldehyde and methylene blue under sunlight or ultraviolet radiation. organic matter, mineralized NO x , SO x and other harmful gases, and can inactivate bacteria.

Embodiment 2

[0012] x=0.7, y=0.3, z=0.5, TiO 2 / Titanium-loaded hydroxyapatite complex phase adsorption and disinfection nanomaterials

[0013] The material of this example is white in appearance. Tests show that its main compound is TiO in nano anatase crystal form 2 and hydroxyapatite complex. Its chemical expression is 0.2TiO 2 / {0.8Ca 10 (PO 4 ) 6 (OH) 2}. The material is resistant to heavy metal ions such as Pb, Cd, Cu, CO, SO 2 , NO and other harmful gases, organic volatiles such as formaldehyde and benzene, organic dyes such as methylene blue and rhodamine, bacteria such as Escherichia coli and Staphylococcus aureus have strong adsorption capacity, and can degrade formaldehyde, Organic substances such as methylene blue can mineralize harmful gases such as NO and can inactivate bacteria.

Embodiment 3

[0015] x=0.5, y=0.5, z=1, TiO 2 / Titanium-loaded hydroxyapatite complex phase adsorption and disinfection nanomaterials

[0016] The material of this example is white in appearance. Tests show that its main compound is TiO in nano anatase crystal form 2 and hydroxyapatite complex. According to its main compound, determine the chemical expression of the material 0.5TiO 2 / {0.5(Ca 9 Ti 1 )(PO 4 ) 6 (OH) 2}. The material is resistant to heavy metal ions such as Pb, Cd, Cu, CO, SO 2 , NO and other harmful gases, organic volatiles such as formaldehyde and benzene, organic dyes such as methylene blue and rhodamine, bacteria such as Escherichia coli and Staphylococcus aureus have strong adsorption capacity, and can degrade formaldehyde, Organic substances such as methylene blue can mineralize harmful gases such as NO and can inactivate bacteria.

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PUM

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Abstract

A sterilization material with hydroxyapatite carried TiO2 nano-power belongs to material field with its chemical composition formula is x{TiO2} / y{(Ca10-zTiz)(PO4)6(OH)2};wherein, x=0.05~0.7, y=0.3~0.95, z=0.5~3; principal crystal phase is TiO2 of anatase type and hydroxyapatite phase. By hydrothermal method obtain mentioned composite material. The product can make good use the catching function of hydroxyapatite to pollution such as virus, bacteria and organics and sterilization ability of nano-TiO2, efficient to catch and break up harmful virus and bacteria.

Description

technical field [0001] What the present invention relates to is a kind of adsorption and disinfection nanometer material, specifically, is a kind of TiO 2 / Titanium-loaded hydroxyapatite complex phase adsorption and disinfection nanomaterials. It belongs to the field of material technology. 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, fi...

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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