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Method for preparing mesoporous material from hydroxyapatite

A technology of hydroxyapatite and mesoporous materials, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problem that high specific surface area, iron-modified apatite mesoporous materials cannot be prepared and other problems, to achieve the effect of simple preparation process, low economic cost of raw materials, and good dispersibility

Active Publication Date: 2014-01-29
HARBIN INST OF TECH
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing method for preparing iron-modified apatite mesoporous materials cannot prepare mesoporous materials with high specific surface area and pore diameter concentrated around 4.2nm and presents a unimodal distribution. Method for preparing mesoporous material from apatite

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  • Method for preparing mesoporous material from hydroxyapatite
  • Method for preparing mesoporous material from hydroxyapatite
  • Method for preparing mesoporous material from hydroxyapatite

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specific Embodiment approach 1

[0017] Specific embodiment one: In this embodiment, a method for preparing mesoporous materials with hydroxyapatite is carried out according to the following steps:

[0018] 1. Mix hydroxyapatite and iron salt solution with a concentration of 0.01-0.05mol / L in a ratio of 8-10g:1L by mass to volume, and then stir the mixture at a speed of 180-300r / min for 10- 20min to obtain iron-modified hydroxyapatite, wherein the temperature of the iron salt aqueous solution is 25°C to 30°C;

[0019] 2. Wash the iron-modified hydroxyapatite obtained in step 1 with deionized water until the pH value is 5 to 7, and dry the washed iron-modified hydroxyapatite at 105°C to 110°C for 22-22°C. After 26 hours, the iron-modified hydroxyapatite mesoporous material was obtained.

[0020] The beneficial effect of this implementation mode:

[0021] 1. This embodiment uses hydroxyapatite synthesized directly from natural shell powder at medium and low temperature as the raw material, which has the chara...

specific Embodiment approach 2

[0024] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the iron salt described in step one is ferric nitrate, ferric sulfate, FeNH 4 (SO 4 ) 2 or ferric chloride. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0025] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in Step 1, the hydroxyapatite and the iron salt solution with a concentration of 0.035 mol / L are 8 to 10 g in mass to volume ratio. : Mix in 1L proportion. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a method for preparing a mesoporous material from hydroxyapatite, relating to a method for preparing the mesoporous material and aiming to solve the problem that a mesoporous material, which is high in specific area, has the aperture of about 4.2 nm and is in unimodal distribution, cannot be prepared through an existing iron modified apatite mesoporous material preparation method. The method disclosed by the invention comprises the following steps of (1), preparing iron modified hydroxyapatite; and (2), washing and drying to obtain the iron modified hydroxyapatite mesoporous material. The mesoporous material prepared by the invention has the good property that aperture is distributed in a concentrated manner; the mesoporous material prepared by utilizing a high-concentration iron ion exchange method is 180-220 m<2> / g in specific area, about 4.2 nm in aperture, unimodal in distribution, good in reproducibility and dispersibility and high in yield; the method for preparing the mesoporous material from the hydroxyapatite, disclosed by the invention, is mainly used in the technical field of treatment of water-borne contaminants.

Description

technical field [0001] The invention relates to a method for preparing a mesoporous material, and belongs to the technical field of pollutant treatment in water. Background technique [0002] Mesoporous materials refer to porous materials with a pore size between 2 and 50 nm, a large specific surface area, and a uniform pore size distribution. It has the characteristics of good selectivity, strong diffusion and adsorption capacity. Mesoporous materials are widely used in petroleum, chemical industry, electronics and other fields, and have great application value. Hydroxyapatite (HAP) is similar to the inorganic mineral composition of bones and teeth, and has good biocompatibility and bioactivity. The hydroxyapatite crystal is a hexagonal system, and the calcium ions in its structure can be replaced by a variety of metals, thus exhibiting different properties. Iron is an easy-to-obtain, economical and practical metal element. Iron ion-modified apatite has the characteristi...

Claims

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Application Information

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IPC IPC(8): B01J20/04B01J20/30C02F1/28
Inventor 马军柳旭升杨晶刘增贺
Owner HARBIN INST OF TECH
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