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Method for synthesizing aragonite nanorod under conditions of normal pressure and temperature

A technology for synthesizing aragonite and nanorods, applied in nanotechnology, calcium carbonate/strontium/barium and other directions, can solve the problem of high energy consumption, and achieve the effects of easy availability of raw materials, mild reaction conditions and less energy

Inactive Publication Date: 2011-10-05
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if this method wants to prepare aragonite crystals with higher purity, it needs to control a higher reaction temperature, so the energy consumption is relatively high.

Method used

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  • Method for synthesizing aragonite nanorod under conditions of normal pressure and temperature
  • Method for synthesizing aragonite nanorod under conditions of normal pressure and temperature
  • Method for synthesizing aragonite nanorod under conditions of normal pressure and temperature

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Experimental program
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Effect test

Embodiment 1

[0054] Prepare 45mmol / L calcium chloride solution and 0.1mol / L dilute sulfuric acid solution, weigh 19.0g of ammonium bicarbonate powder and put it into a watch glass, place the fibrous protein layer of razor clam ligament and the cover glass respectively on the With 10mm CaCl 2 Pour 40mL of dilute sulfuric acid solution into a small beaker, then put them together in a desiccator at 30°C, react for 12 hours, take out the protein layer and cover glass, wash them, and dry them at 37°C Let dry for 12 hours. The obtained white powder was subjected to FTIR test respectively. like Image 6 As shown, A is the infrared spectrum of the sample prepared with the protein layer as the substrate, and B is the infrared spectrum of the product prepared with the cover glass substrate. Among them, A shows the characteristic absorption peaks of calcite (876.31cm-1 and 712.92cm-1), as well as the characteristic absorption peaks of aragonite (855.72cm-1 and 712.92cm-1), and the content of calci...

Embodiment 2

[0056] Configure 9.0mmol / L calcium chloride solution and 0.1mol / L dilute sulfuric acid solution, weigh 19.0g of ammonium bicarbonate powder and put it in a watch glass, place the fibrous protein layer of razor clam ligament and the cover glass on the Filled with 10mm CaCl 2 Pour 40mL of dilute sulfuric acid solution into a small beaker, then put them together in a desiccator at 30°C, react for 12 hours, take out the protein layer and cover glass, wash them, and dry them at 37°C Let dry for 12 hours. The obtained white powder was subjected to FTIR test respectively. like Figure 7 As shown, A is the infrared spectrum of the sample prepared with the protein layer as the substrate, and B is the infrared spectrum of the product prepared with the cover glass substrate. Among them, A shows the characteristic absorption peak of aragonite (855.90cm -1 and 713.22cm -1 ), and it is pure aragonite; B shows the characteristic absorption peak of calcite (876.01cm -1 and 712.43cm -1 ...

Embodiment 3

[0058] Prepare 4.5mmol / L calcium chloride solution, 0.1mol / L dilute sulfuric acid solution, weigh 19.0g ammonium bicarbonate powder and put it in a watch glass, place the protein layer and coverslip respectively in 10mm CaCl 2 Pour 40mL of dilute sulfuric acid solution into a small beaker, then put them together in a desiccator at 30°C, react for 12 hours, take out the protein layer and cover glass, wash them, and dry them at 37°C 12 hours. The obtained powders were subjected to FTIR tests respectively. like Figure 8 As shown, A is the infrared spectrum of the product prepared on the cover glass substrate, and B is the infrared spectrum of the sample prepared on the basis of the razor clam protein layer. Among them, A contains calcite and aragonite, the calcite content is 76.7% and the aragonite content is 23.3% according to semi-quantitative calculation, and its appearance is as follows Figure 5 As shown, it is mainly diamond-shaped calcite and a small amount of bundle-s...

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Abstract

The invention discloses a method for synthesizing an aragonite nanorod under conditions of normal pressure and temperature. In the method, a solen protein layer is taken as a substrate, and an aragonite nanorod product is obtained by reacting a calcium chloride solution with carbon dioxide for 3-12 hours under the conditions of normal pressure and temperature by using a carbon dioxide diffusion deposition method. By taking the solen protein layer as the substrate for reaction under the conditions of normal pressure and temperature, the method has the characteristics of low reaction temperature, less consumed energy, high purity (above 99 percent) of a product, simple synthesis process, readily available raw materials, no pollution and the like. The aragonite nanorod is an ideal organic-inorganic composite nanomaterial. The aragonite nanorod can be used as a reinforcing material for reinforcing the toughness of an organism and improving the plasticity of the organism, and also can be used as a biological active material which is specifically applied to the fields such as the medicine field and the like.

Description

technical field [0001] The invention relates to the fields of organic-inorganic composite materials, chemistry and biomaterials, in particular to a preparation method for synthesizing aragonite nanorods at normal temperature and pressure. Background technique [0002] As an important inorganic chemical product, calcium carbonate has the characteristics of abundant raw materials, simple production process, and stable performance. It is widely used in industries such as rubber, plastics, paint, paper, ink, food, medicine, and feed. Calcium carbonate is generally used in the paper industry as a filler. The purpose of adding fillers to printing paper or writing paper is to improve the whiteness, opacity, roughness, writing property, hand feeling and printability of the paper. my country needs 4 million tons of calcium carbonate products every year, of which 80% is calcium carbonate consumption in papermaking, plastics, and rubber industries, 10% in coatings, and 10% in other in...

Claims

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Application Information

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IPC IPC(8): C01F11/18B82Y40/00
Inventor 申巧敏黄增琼张刚生
Owner GUANGXI UNIV
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