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Hydroxyapatite mono-crystal nano-rod and preparation method thereof

A hydroxyapatite, single crystal nanotechnology, applied in the field of material chemistry, can solve the problems of inability to form a shape, small specific surface area, irregular arrangement of hydroxyapatite single crystal particles, etc., and achieves low production cost and large ratio. Surface area, good remineralization effect

Inactive Publication Date: 2015-06-03
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The shortcomings of the hydroxyapatite single crystal prepared by the above technology are: the arrangement of the hydroxyapatite single crystal particles is irregular, it cannot form a specific shape, and the specific surface area is small

Method used

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  • Hydroxyapatite mono-crystal nano-rod and preparation method thereof
  • Hydroxyapatite mono-crystal nano-rod and preparation method thereof
  • Hydroxyapatite mono-crystal nano-rod and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Example 1: A method for preparing hydroxyapatite single crystal nanorods, the specific operations are as follows:

[0038] (1) The plant template cotton was soaked in hydrochloric acid with a mass percentage concentration of 5% for 10 hours, washed with ultrapure water until neutral, and dried in an oven at 60°C for later use;

[0039] (2) Dissolve diammonium hydrogen phosphate in deionized water, stir to make it completely dissolve to obtain a homogeneous transparent solution, the concentration of hydrogen phosphate ion is 0.01mol / L, add dry cotton in the proportion of 0.5g / L as plant template;

[0040] (3) Add calcium carbonate dropwise to the above-mentioned phosphate aqueous solution at a speed of 1ml / min, continue to stir for 10min, and ultrasonicate for 5 minutes; the molar ratio of Ca:P is 1.67, and the pH value of the solution is 10 (use hydrogen Sodium to adjust the pH value), the stirring speed is 200rpm;

[0041] (4) Transfer the solution in step (3) into...

Embodiment 2

[0045] Example 2: A method for preparing hydroxyapatite single crystal nanorods, the specific operations are as follows:

[0046] (1) Plant template loofah pulp is soaked in hydrochloric acid with a mass fraction of 2% for 20 hours, washed with ultrapure water until neutral, and dried in an oven at 60°C for later use;

[0047] (2) Dissolve sodium phosphate in deionized water, stir to make it completely dissolve to obtain a homogeneous transparent solution, the concentration of phosphate ions is 0.1mol / L, and add dry loofah pulp into it at a ratio of 5g / L as a plant template;

[0048] (3) Add calcium carbonate dropwise to the above-mentioned phosphate aqueous solution while stirring at a speed of 5ml / min, continue to stir for 30min, and ultrasonicate for 8 minutes; wherein the molar ratio of Ca:P is 1.67, and the pH value of the solution is 8 (use hydrogen Potassium to adjust the pH value), the stirring speed is 500rpm;

[0049] (4) Transfer the solution in step (3) into a h...

Embodiment 3

[0052] Example 3: A method for preparing hydroxyapatite single crystal nanorods, the specific operations are as follows:

[0053] (1) Plant template leaves are soaked in hydrochloric acid with a mass fraction of 8% for 16 hours, washed with ultrapure water until neutral, and dried in an oven at 60°C for later use;

[0054] (2) Dissolve potassium phosphate in deionized water, stir to completely dissolve to obtain a homogeneous transparent solution, the concentration of phosphate ions is 0.05mol / L, and add dried leaves to it at a ratio of 1g / L as a plant template;

[0055] (3) Add calcium carbonate dropwise to the above phosphate aqueous solution at a speed of 2ml / min, continue to stir for 45min, and ultrasonicate for 7 minutes; the molar ratio of Ca:P is 1.67, and the pH value of the solution is 9 (adjusted with ammonia water) pH value), the stirring speed is 600rpm;

[0056] (4) Transfer the solution of step (3) into a hydrothermal synthesis reaction kettle, and after const...

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Abstract

The invention discloses a hydroxyapatite mono-crystal nano-rod capable of forming a special microstructure of plants and a preparation method thereof. The preparation method comprises the following steps: taking soluble phosphate and calcium salt as raw materials; adding a plant template; synthesizing according to a hydrothermal method; ultrasonically washing and drying; placing into a muffle furnace for calcining at high temperature, thereby obtaining bar-shaped hydroxyapatite mono-crystal nano-grains; and stacking the grains, thereby forming the special microstructure of the plants. The mono-crystal nano-rod prepared according to the method provided by the invention has the advantages of 20nm-50nm diameter, 100nm-400nm length, excellent physical and chemical properties, and wide application prospect in the fields of environmental protection material, drug slow release, and the like. The raw materials adopted in the method provided by the invention are low-cost and easy to obtain. The preparation process for the material is simple and is pollution-free to environment.

Description

technical field [0001] The invention relates to a one-dimensional nanometer material and a preparation method thereof, in particular to a hydroxyapatite single crystal nanorod capable of forming a special microstructure of a plant using plants as templates and a preparation method thereof, belonging to the field of material chemistry. Background technique [0002] Hydroxyapatite, also known as hydroxyapatite, has the molecular formula Ca 10 (PO 4 ) 6 (OH) 2 , is a class of widely used bioactive ceramic materials. Because its composition is similar to the inorganic composition of biological body bones, it has attracted widespread attention. With the continuous improvement of people's understanding, many research results have shown that hydroxyapatite is a non-toxic, non-carcinogenic, non-side effect and bioactive material with good biocompatibility, which can guide the growth of new bone after implantation in the body It is also found that hydroxyapatite has solid basic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/14C30B7/10
Inventor 潘学军沈秋莹罗利军
Owner KUNMING UNIV OF SCI & TECH
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