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Adjustable-shape fiber containing magnetic or metallic nanocrystalline

A technology of metal nanocrystals and magnetic nanocrystals, applied in the field of fibers, can solve the problems of not containing magnetism and metal nanocrystals

Inactive Publication Date: 2010-06-16
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there have been many studies on the functionalization of one-dimensional materials, but it is a new technology to load nanocrystals into nanofibers with a size of less than 1 mm. There have been reports of loading luminescent nanocrystals into these fibers, but there is no The research report of magnetism and metal nanocrystal, so the material of the present invention and its preparation method are very necessary to the application in medicine, biological field, these fibers also can be used for catalytic technology and as electrical conduction material

Method used

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  • Adjustable-shape fiber containing magnetic or metallic nanocrystalline
  • Adjustable-shape fiber containing magnetic or metallic nanocrystalline
  • Adjustable-shape fiber containing magnetic or metallic nanocrystalline

Examples

Experimental program
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Embodiment 1

[0034] 1.1 First, Fe was synthesized by aqueous solution method 3 o 4 Magnetic nanocrystals (see literature Chem. Mater. 1996, 8, 2209-2211 for details). First, 0.10 mL of HCl (12M) was added to 5 mL of H 2 O (through nitrogen for 30min), stirred to obtain a solution; then 0.1038g FeCl 2 and 0.26g FeCl 3 Dissolved into the above solution; the resulting solution was added dropwise to 25 mL of NaOH solution (1.5M). The precipitate was separated with a magnet, and the supernatant liquid was removed; re-injected into the precipitate water through nitrogen gas, then centrifuged at 3500rpm, and discarded the supernatant; after repeating the last step three times, 500mL of 0.01M HCl solution was added to the precipitate to neutralize The anionic charge on the surface of the nanocrystal; the sample is then centrifuged again, and water is added to form a sol in which Fe 3 o 4 The size of the nanocrystals is 8nm.

[0035] 1.2 Weigh cadmium oxychloride and thioglycolic acid, disso...

Embodiment 2

[0041] The preparation method is the same as in Example 1 above, and the reagent concentration in the following table is used to prepare during the reflux or room temperature growth process, and the diluted mixed solution is placed at room temperature for 1 month to obtain a strip-shaped Fe-containing 3 o 4 Nanocrystalline fibers (Fig. 1). The particle size of the nanocrystal is 8nm, the concentration of the nanocrystal in the fiber is 0.01M, and the fiber length is 14μM.

[0042]

Embodiment 3

[0044] The preparation method is the same as in Example 1 above, and the reagent concentrations in the following table are used during the reflux or room temperature growth process to obtain ribbon-shaped Fe-containing 3 o 4 Nanocrystalline fibers (Fig. 1). The particle size of the nanocrystal is 8nm, the concentration of the nanocrystal in the fiber is 0.0001M, and the fiber length is 14μM.

[0045]

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Abstract

The invention relates to adjustable-shape fiber containing magnetic or metallic nanocrystallines. Nano particles are evenly distributed in the fibrous matrix of the fiber, wherein the nano particle is one or more of magnetic nanocrystallines and metallic nanocrystallines; and the composition and the shape characteristics of the fiber comprise that: a) the fibrous matrix consists of a compound material formed by cadmium ions and thioglycollic acid; b) the nanocrystallines are evenly distributed in the fiber; c) the nanocrystallines are coated with hybridized SiO2 shells before being embedded in the fiber; and d) the fiber may be rod-shaped, line-shaped, band-shaped, sheet-shaped or tube-shaped. The preparation method comprises the following steps of: preparing a precursor of the clusters formed by the cadmium ions (Cd2+) and thioglycollic acid (TGA); coating a hybridized sol gel SiO2 layer on the nanocrystallines; and preparing the fiber by utilizing the crystal growth technology in aqueous solution at the room temperature. Because of the special properties possessed by the magnetic and metallic nanocrystallines, the fiber of the invention can generate quite high application values in the fields of medicine and biology, for example, the tube-shaped fiber containing the magnetic nanocrystallines can be used for medicament delivery; and moreover, the fiber can also be used in catalytic technology and as an electrically conductive material.

Description

Technical field: [0001] The invention relates to a shape-adjustable fiber containing magnetic or metal nanocrystals, especially a fiber in which the nanocrystals are evenly distributed, showing solid rod-like, linear, hollow tubular, and ribbon-like shapes. Background technique: [0002] One-dimensional nanomaterials, because of their unique morphology and unique physical and chemical properties, are known as research hotspots in basic scientific research and applied research. The functionalization of one-dimensional nanomaterials brings new application prospects and vitality to nanotechnology, because these one-dimensional materials can be used as various nanocrystal carriers to further display the unique properties of nanocrystals. At present, there have been many studies on the functionalization of one-dimensional materials, but it is a new technology to load nanocrystals into nanofibers with a size of less than 1 mm. There have been reports of loading luminescent nanocry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/00D01F1/10A61K47/20A61K47/02B01J35/06B01J31/28B01J31/26
Inventor 杨萍张爱玉程新
Owner UNIV OF JINAN
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