Synthesis device and synthesis method of iron oxide magnetic nano material

A technology of magnetic nanometer and synthesis device, applied in ferrous oxide, nanotechnology for material and surface science, iron oxide, etc., can solve the problems of expensive synthesis device, harsh synthesis conditions, insufficient oxidation, etc. Achieve the effects of fast magnetic separation and enrichment recovery, good biocompatibility, and controllable synthesis conditions

Pending Publication Date: 2020-04-17
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fe 3+ →Fe(OH) 3 →α-Fe 2 o 3 However, the forced hydrolysis method takes a long time for microscopic mixing, and the synthesis process may not have high purity due to insufficient oxidation.
[0022] The technical problem to be solved in the present invention is for nano-Fe 3 o 4 Shortcomings and problems that occur in existing synthetic methods include cumbersome synthetic steps, harsh synthetic conditions, low crystallization purity, expensive synthetic equipment, environmental pollution by synthetic by-products, and inefficient separation and washing processes (such as commonly used precipitation or centrifugation, Low efficiency, complicated operation) and other shortcomings

Method used

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  • Synthesis device and synthesis method of iron oxide magnetic nano material
  • Synthesis device and synthesis method of iron oxide magnetic nano material
  • Synthesis device and synthesis method of iron oxide magnetic nano material

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Experimental program
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preparation example Construction

[0070] A kind of nano Fe that adopts above-mentioned synthesis device 3 o 4 Synthetic method, comprises the following steps:

[0071] (1) Nano Fe 3 o 4 Synthesis

[0072] Close the first valve 4a, the second valve 4b and the third valve 4c, connect the air bag filled with inert gas with the second hose 3b, dissolve the ferrous salt and the ferric salt with ultrapure water to obtain a mixed solution , Fe in the mixture 2+ and Fe 3+ The mol ratio is 1:2, the mixed solution is added to the separatory funnel 9, and the valve 9a of the separatory funnel 9 is closed simultaneously, and the outlet of the separatory funnel 9 is sealed with one of the inlets and outlets of the three-neck round bottom flask 6 , the burette is an alkaline burette, the alkaline liquid is added to the burette, and the valve 8a of the burette 8 is closed simultaneously, the outlet of the burette is sealed with another inlet and outlet of the three-necked round bottom flask 6, and the valve 9a of the s...

Embodiment 1

[0087] (1) Nano Fe 3 o 4 Synthesis

[0088] Close the first valve 4a, the second valve 4b and the third valve 4c, the air bag full of inert gas is connected with the second flexible pipe 3b, and 1g ferrous chloride tetrahydrate and 2.7g ferric chloride hexahydrate are used 50mL of ultrapure water was dissolved in a beaker to obtain a mixed solution, and Fe in the mixed solution 2+ and Fe 3+ The mol ratio is 1:2, the mixed solution is added to the separatory funnel 9, and the valve 9a of the separatory funnel 9 is closed simultaneously, and the outlet of the separatory funnel 9 is sealed with one of the inlets and outlets of the three-neck round bottom flask 6 , the burette is an alkaline burette, the concentration is 25%-28% ammonia water is added to the burette, and the valve 8a of the burette 8 is closed at the same time, the outlet of the burette is tightly connected with the other inlet and outlet of the three-neck round bottom flask 6, and the separating funnel is open...

Embodiment 2

[0093] (1) Nano α-Fe 2 o 3 Synthesis

[0094] Close the first valve 4a, the second valve 4b and the third valve 4c, connect the air bag filled with high-purity oxygen with the second hose 3b, and add pure water into the three-neck round bottom through the inlet and outlet of the three-neck round bottom flask 6 In the flask, the ferric salt solution is added to the separatory funnel 9, the ferric salt solution adopts ferric chloride hexahydrate solution, and the valve 9a of the separatory funnel 9 is closed simultaneously, and the outlet of the separatory funnel 9 is connected to the three One of the inlets and outlets of the round-bottomed flask 6 is tightly connected, and the burette is an acidic burette. The concentrated hydrochloric acid with a concentration of 37% is added to the burette, and the valve 8a of the burette 8 is closed at the same time. The inlet and outlet are sealed and connected, and the third hose is sealed and connected with the last inlet and outlet of...

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Abstract

The invention relates to a synthesis device and a synthesis method of an iron oxide magnetic nano material. The technical scheme comprises that a water bathtub is placed on a supporting plate of a constant-temperature magnetic stirrer; a cavity of the water bathtub is filled with water; the lower part of a three-necked round-bottom flask is soaked in the water; an air inlet of a vacuum pump is connected with a first interface of a tee joint through a first hose; an air outlet of an air bag is connected with a second interface of the tee joint through a second hose; a third interface of the teejoint is hermetically connected with one inlet/outlet of the three-necked round-bottom flask through a third hose; a burette and a separating funnel which are hermetically connected are respectivelyarranged on the other two inlets/outlets of the three-necked round-bottom flask; the multiphase reaction process of nano synthesis can be flexibly controlled through the device, meanwhile, influence factors of coprecipitation reaction are reasonably regulated and optimized, and by controlling synthesis conditions, the synthesized magnetic nano Fe3O4 and nano alpha-Fe2O3 are good in monodispersity,controllable in particle size, high in purity and controllable in form.

Description

technical field [0001] The invention belongs to the field of synthesis of inorganic nanometer materials, and relates to a synthesis device and a synthesis method of iron oxide magnetic nanometer materials. Background technique [0002] Magnetic nanoparticles refer to ultrafine magnetic materials with at least one dimension in the nanometer scale (1-100nm) in the three-dimensional size. They have the characteristics of small size, large specific surface area, and high activity of ordinary nanomaterials, as well as superparamagnetic properties. , is a new type of material. Due to the nanoscale iron oxide (nano-Fe 3 o 4 , Nano α-Fe 2 o 3 etc.) have the advantages of high reactivity, easy separation, and high reactivity, and are widely used in various fields such as biomedicine, environmental remediation, and wastewater treatment. [0003] Nano α-Fe 2 o 3 It is an n-type semiconductor with a band gap, and it is the most stable ferrite; due to its high catalytic activity, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/18B01J3/03C01G49/08C01G49/06B82Y30/00
CPCB01J3/03B01J19/18B82Y30/00C01G49/06C01G49/08C01P2002/72C01P2004/64C01P2006/42
Inventor 陈力可徐建郭昌胜孙震宇张艳刘淼
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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