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Process for producing silver-hydroxyapatite nano-composite material

A nanocomposite material, hydroxyapatite technology, applied in the field of nanomaterials, can solve problems such as hindering application promotion, expensive equipment operation, high material cost, etc., and achieve high utilization rate, cheap and economical raw materials, and simple production process

Inactive Publication Date: 2008-10-29
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the preparation methods of silver-hydroxyapatite composite materials mainly include plasma spraying method and hydrothermal method, which have the problems of expensive equipment and complicated operation, resulting in high material cost and hindering the application and promotion.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1 silver-hydroxyapatite nanocomposite material

[0021] The silver-hydroxyapatite nanocomposite material of the present embodiment, its preparation method comprises the steps:

[0022] (1) Preparation containing 0.01mol / LCa(NO 3 ) 2 , 0.01mol / L NH 4 h 2 PO 4 and 0.02mol / L H 2 o 2 Solution 1;

[0023] (2) Preparation containing 20g / L AgNO 3 and a solution 2 of 200g / L thiourea, and adjust the final pH of the solution 2 to 4 with nitric acid;

[0024] (3) Mix the above solution 1 and solution 2, heat it to 60°C, stir the mixed solution at a constant temperature at 60°C, and then carry out constant potential deposition, the potential used is -0.2V (relative to the saturated calomel reference electrode) ;

[0025] (4) After the deposition, the deposited sample was placed in a 5 mol / L NaOH solution, and heat-treated at 60° C. for 24 hours to obtain the silver-hydroxyapatite nanocomposite material.

Embodiment 2

[0026] Embodiment 2 silver-hydroxyapatite nanocomposite material

[0027] The silver-hydroxyapatite nanocomposite material of the present embodiment, its preparation method comprises the steps:

[0028] (1) Preparation containing 0.01mol / LCa(NO 3 ) 2 , 0.01mol / L NH 4 h 2 PO 4 and 0.01mol / L H 2 o 2 Solution 1;

[0029] (2) Preparation containing 20g / L AgNO 3 and a solution 2 of 150g / L thiourea, and adjust the final pH of the solution 2 to 4 with nitric acid;

[0030] (3) Mix the above solution 1 and solution 2, heat it to 60°C, stir the mixed solution at a constant temperature at 60°C, and then carry out constant potential deposition, the potential used is -0.2V (relative to the saturated calomel reference electrode) ;

[0031] (4) After the deposition, the deposited sample was placed in a 5 mol / L NaOH solution, and heat-treated at 60° C. for 24 hours to obtain the silver-hydroxyapatite nanocomposite material.

Embodiment 3

[0032] Embodiment 3 silver-hydroxyapatite nanocomposite material

[0033] The silver-hydroxyapatite nanocomposite material of the present embodiment, its preparation method comprises the steps:

[0034] (1) Preparation containing 0.01mol / LCa(NO 3 ) 2 , 0.01mol / L NH 4 h 2 PO 4 and 0.02mol / L H 2 o 2 Solution 1;

[0035] (2) Preparation containing 20g / L AgNO 3 and a solution 2 of 200g / L thiourea, and adjust the final pH of the solution 2 to 4 with nitric acid;

[0036] (3) Mix the above solution 1 and solution 2, heat it to 70°C, stir the mixed solution at a constant temperature at 70°C, and then carry out constant potential deposition, the potential used is -0.2V (relative to the saturated calomel reference electrode) ;

[0037] (4) After the deposition, the deposited sample was placed in a 5 mol / L NaOH solution and heat-treated at 70°C for 24 hours to obtain the silver-hydroxyapatite nanocomposite material.

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PUM

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Abstract

The invention discloses a method for preparing silver-hydroxylapatite nanocomposite material. The method adopts a cathodic electrodeposition method to ensure the aqueous solution of calcium-contained ions, dihydrophosphate radical and silver ions take titanium sheet as the working electrode; constant potential deposition is performed to the applied electric field; then heat treatment is performed through alkali solution; and the silver-hydroxylapatite nanocomposite material can be obtained. The method for preparing the silver-hydroxylapatite nanocomposite material has the advantages that the problems in the prior method of expensive equipment and complex operation can be overcome, the silver-hydroxylapatite nanocomposite material with good antibacterial properties can be obtained under the mild condition, the production process is simple, and the required investment of the instrument equipment is lower; the preparation method belongs to a non-linear process, and even coating can be obtained through deposition on the basal body with complex shape; the raw material is inexpensive and economic, and the utilization rate is high.

Description

technical field [0001] The invention relates to the field of nanometer materials, in particular to an electrochemical preparation method of a silver-hydroxyapatite nanocomposite material. Background technique [0002] Silver has high antibacterial performance, and many inorganic antibacterial agents prepared at present contain silver and its compounds. In order to expand its application range, people use hydroxyapatite with a hollow structure inside as a carrier. The silver-hydroxyapatite composite material prepared in this way has excellent bone conductivity and bonding, and the doped silver is also It can effectively improve the antibacterial performance of the material, thereby reducing the incidence of inflammation. At the same time, because the thermal expansion coefficient of silver is higher than that of hydroxyapatite, it can effectively enhance the toughness of the composite material and improve the bonding strength of the coating interface. [0003] At present, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D13/00
Inventor 叶剑清童叶翔张革刘鹏刘建平
Owner SUN YAT SEN UNIV