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A kind of soda calcium stone nanofiber and preparation method thereof

A technology of nanofiber and soda limestone, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to achieve the effect of uniform shape and size, suitable for mass production, and simple synthesis process

Inactive Publication Date: 2017-06-27
SHIJIAZHUANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there has been no report on the study of soda limestone nanomaterials at home and abroad. However, with the discovery of the application of soda limestone, especially the enthusiasm for soda limestone handicrafts, the preparation of soda limestone has uniform morphology. , high-purity needle sodium-calcium materials are of great significance to the practical application of such materials

Method used

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  • A kind of soda calcium stone nanofiber and preparation method thereof
  • A kind of soda calcium stone nanofiber and preparation method thereof
  • A kind of soda calcium stone nanofiber and preparation method thereof

Examples

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Effect test

Embodiment 1

[0028] At room temperature, 1 mmol of sodium silicate was dissolved in 9 mL of distilled water, and 1 mmol of CaCl 2 Dissolve in 9 mL of distilled water, and add the sodium silicate solution dropwise to the CaCl 2 In the solution, stir for 10 min, add 2 mL of NaOH solution with a concentration of 1 mol / L dropwise into the reaction system, continue to stir for 10 min, then transfer it to a 25 mL hydrothermal reaction kettle, seal it and place it in a constant temperature box Hydrothermal reaction at 200 °C for 12 h, after the reaction was completed, cooled to room temperature, washed three times with deionized water and absolute ethanol, centrifuged, and dried the obtained precipitate in an oven at 80 °C for 16 h to obtain eedalite nanofibers. The above product was analyzed by X-ray diffraction (XRD) and scanning electron microscope, and the results were as follows: figure 1 , figure 2 As shown, the XRD spectrum results show that the intensity and position of the product dif...

Embodiment 2

[0030] Dissolve 1.5 mmol of sodium silicate in 9 mL of distilled water at room temperature, and 1 mmol of CaCl 2 Dissolve in 9mL of distilled water, and add the sodium silicate solution dropwise to the CaCl 2 solution, stirred for 10 min, 2 mL of NaOH solution with a concentration of 2 mol / L was added dropwise to the reaction system, then transferred to a 25 mL hydrothermal reaction kettle, sealed and placed in a constant temperature box for hydrothermal reaction at 220 °C 4h, after the completion of the reaction, cool to room temperature, wash with deionized water and absolute ethanol for 5 times, centrifuge, and dry the obtained precipitate in an oven at 80°C for 8h to obtain NaCa 2 Si 3 o 8 (OH) nanofibrous material, above-mentioned product is analyzed with XRD analysis and scanning electron microscope, and result is as follows respectively image 3 , Figure 4 As shown, the XRD spectrum results show that the intensity and position of the product diffraction peaks are s...

Embodiment 3

[0032] At room temperature, dissolve 5 mmol of sodium silicate in 8 mL of distilled water, dissolve 5 mmol of calcium acetate in 6 mL of distilled water, add the sodium silicate solution dropwise to the calcium acetate solution under magnetic stirring, and stir for 10 min. Add 6 mL of NaOH solution with a concentration of 1 mol / L dropwise into the reaction system and continue to stir for 10 min, then transfer it to a 25 mL hydrothermal reaction kettle, seal it and place it in a thermostat for 12 hours at 240 °C for hydrothermal reaction, and the reaction is complete After cooling to room temperature, wash 5 times with deionized water and absolute ethanol respectively, centrifuge, and dry the obtained precipitate in an oven at 80 °C for 8 h to obtain NaCa 2 Si 3 o 8 (OH) nanofibrous material.

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Abstract

The invention discloses a soda limestone nanofiber and a preparation method thereof, which belong to the field of inorganic non-metallic materials. The technical solution adopted is that a soda limestone nanofiber material is composed of NaCa2Si3O8(OH), and the needle Soda limestone nanofibers have a diameter of 50-200 nanometers and a length of several micrometers to tens of micrometers. Its synthesis method comprises the following steps: ① Add sodium hydroxide, sodium silicate and calcium salt to water at a molar ratio of 1-5:1-3:1 to form a uniform reaction system, transfer it to a reaction kettle and seal it, and React at 200-240°C for 4-24h to obtain a suspension of the crude product; ②cool the suspension obtained in ① to room temperature, wash and dry to obtain aegilite nanofibers. The invention has the advantages of wide sources of raw materials, low production cost; mild reaction conditions, low energy consumption; simple synthesis process, controllable conditions, suitable for mass production; environmentally friendly preparation process, pure product, uniform shape and size, and excellent crystallization performance; It has laid a good technical foundation for the research and application of soda calcium stone materials.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, and in particular relates to a soda limestone nanofiber and a preparation method thereof. Background technique [0002] Acetolite is an environmentally friendly inorganic mineral material, which is mainly distributed in California, the United States and Edinburgh, the United Kingdom. Micron-sized particles not only have uneven particle size, but also have impurities in the ore, and their purity is low. In recent years, with the continuous development of nanotechnology, it has been found that nanomaterials have better performance in many fields due to their unique microstructure. Therefore, the research on the preparation process and related properties of various nanomaterials has gradually become a research hotspot. . So far, there has been no report on the study of soda limestone nanomaterials at home and abroad. However, with the discovery of the application of soda limestone, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/32B82Y30/00B82Y40/00
Inventor 张绍岩张晓云时伟张雪明杨玉茹
Owner SHIJIAZHUANG UNIVERSITY
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