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A kind of preparation method of fe3o4/bi core-shell nanorod

A nanorod, core-shell technology, applied in metal processing equipment, coating, transportation and packaging, etc., to achieve high quality, good biocompatibility, good paramagnetic effect

Active Publication Date: 2018-08-21
陕西燕园众欣石墨烯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, no one has reported Fe 3 o 4 Synthesis Process of Bi / Bi Core-Shell Nanorod Composite

Method used

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  • A kind of preparation method of fe3o4/bi core-shell nanorod
  • A kind of preparation method of fe3o4/bi core-shell nanorod

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Embodiment 1

[0020] see figure 1 , in the embodiment of the present invention, a kind of Fe 3 o 4 / The preparation method of Bi core-shell nanorod, it specifically comprises the following steps:

[0021] (1) 0.946g of FeCl 3 ·H 2 O and 0.497g Na 2 SO 4 Mix with 70mL of distilled water, leave at room temperature for 15 minutes, then transfer the mixed solution to a Teflon-lined stainless steel autoclave with a titanium foil at the bottom, and heat at 165°C for 7 hours;

[0022] (2) After cooling to room temperature, the obtained Fe 3 o 4 The nanorods were taken out and soaked in 200mL aqueous solution containing 0.5g glucose for 36 hours;

[0023] (3) Fe 3 o 4 The nanorods were dried at 60°C and annealed at 550°C for 3 hours in an argon flow;

[0024] (4) Fe that will be prepared 3 o 4 Nanorods were placed in 0.01 mol of analytically pure Bi(NO 3 ) 3 and excess hydrazine hydrate mixed solution, then transferred to a stainless steel autoclave, and heated at 100°C for 10 hours;...

Embodiment 2

[0029] see figure 2 , in the embodiment of the present invention, a Fe 3 o 4 / The preparation method of Bi core-shell nanorod, it specifically comprises the following steps:

[0030] (1) 0.946g FeCl 3 ·H 2 O and 0.497g Na 2 SO 4 Mix with 70 mL of distilled water and let stand at room temperature for 15 minutes. Then the mixed solution was transferred to a Teflon-lined stainless steel autoclave with a titanium foil at the bottom, and heated at 165°C for 7 hours;

[0031] (2) After cooling to room temperature, the obtained Fe 3 o 4 The nanorods were taken out and soaked in 200mL aqueous solution containing 0.5g glucose for 36 hours;

[0032] (3) Fe 3 o 4 The nanorods were dried at 60°C and annealed at 550°C for 3 hours in an argon flow;

[0033] (4) Fe that will be prepared 3 o 4 The nanorods were put into 0.03mol of analytically pure Bi(NO 3 ) 3 and excess hydrazine hydrate mixed solution, then transferred to a stainless steel autoclave, heated at 100°C for 10 ...

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Abstract

The invention discloses a preparation method of Fe3O4 / Bi core-shell nanorods, adopting a two-step hydrothermal method, using a mixed solution of FeCl3·H2O, Na2SO4 and distilled water as a reaction source, heating at a high temperature of 165°C for 7 hours and then cooling to obtain Fe3O4 Nanorods, and then put the prepared Fe3O4 nanorods into a mixed solution of 0.01mol analytically pure Bi(NO3)3 and excess hydrazine hydrate, and react at 100°C for 12 hours to obtain Fe3O4 / Bi core-shell nanorods. The Fe3O4 / Bi core-shell nanorod produced by the invention is of high quality, not only has good paramagnetism, but also has a diamagnetic Bi shell layer deposited on the surface, so it has good biocompatibility and can be widely used in the field of medical testing.

Description

technical field [0001] The invention relates to the field of nanocomposite materials, specifically a Fe 3 o 4 / Bi core-shell nanorod preparation method. Background technique [0002] Ferric oxide (Fe 3 o 4 ) As an important spinel ferrite, due to its magnetic effect, it is often used as recording material, magnetic liquid material, microwave absorbing material and electrostatic printing developer, etc., and can also be used as biological targeting material in biomedical technology The field has a good application prospect. with common Fe 3 o 4 Compared to nano-sized Fe 3 o 4 Ordinary Fe 3 o 4 The novel properties that do not have, such as superparamagnetism, small size effect and surface effect, make nano-Fe 3 o 4 It has become a research hotspot in the field of nanomaterials and functional materials. Ferroferric oxide nanomaterials can be synthesized by methods such as coprecipitation, hydrothermal method, sol-gel method, microemulsion method, and pyrolysis met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B22F1/02
CPCB22F9/24B22F1/17
Inventor 张扬威孙彬田幼华
Owner 陕西燕园众欣石墨烯科技有限公司
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