Method for synthesizing three-dimensional porous ferric oxide nano rod cluster

A nano-, three-dimensional porous technology of iron oxide, applied in iron oxide, iron oxide/iron hydroxide, nanotechnology, etc., can solve the problems of poor repeatability and difficulty in controlling the shape of nanoparticles, and achieve low cost, easy operation, and high technology simple effect

Inactive Publication Date: 2012-06-20
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These synthesized nanostructured α-Fe using ionic liquids as solvents 2 o 3 Compared with the method synthesized in the aqueous phase, the reaction conditions do not require high temperature and high pressure, are milder, and the operation is easier, but there are also poor repeatability, α-Fe 2 o 3 The shape of nanoparticles is not easy to control and other shortcomings

Method used

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  • Method for synthesizing three-dimensional porous ferric oxide nano rod cluster
  • Method for synthesizing three-dimensional porous ferric oxide nano rod cluster
  • Method for synthesizing three-dimensional porous ferric oxide nano rod cluster

Examples

Experimental program
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Effect test

Embodiment 1

[0022] (1) Mix 30g diphenyl ether, 20g [omim][BF 4 ] Add 1g iron acetylacetonate to the autoclave, stir evenly, and charge N 2 Exhaust air, and finally keep N in the reactor 2 The pressure is 2kPa, the stirring speed is controlled at 1000r / min, the temperature is raised to 230°C, and the stirring is carried out for 1h. After the temperature in the reactor drops to room temperature, open the reactor, filter the product and wash with ethanol to obtain FeF 2 .

[0023] (2) The FeF 2 Put it into a ceramic crucible and fire under air atmosphere, the firing temperature is 400℃, and the firing time is 7h. After firing, three-dimensional porous α-Fe can be obtained. 2 O 3 Nanorod clusters.

Embodiment 2

[0025] (1) Mix 25g diphenyl ether, 25g [omim][BF 4 ] Add 1g iron acetylacetonate to the autoclave, stir evenly, and charge N 2 Drain the air, and finally keep N in the reactor 2 The pressure is 2kPa, the stirring speed is controlled at 1000r / min, the temperature is increased to 230°C, and the stirring is performed for 1 hour. After the temperature in the reactor is lowered to room temperature, open the reactor, filter the product and wash it with ethanol to obtain FeF 2 .

[0026] (2) The FeF 2 Put it into a ceramic crucible and fire under air atmosphere, the firing temperature is 400℃, and the firing time is 7h. After firing, three-dimensional porous α-Fe can be obtained. 2 O 3 Nanorod clusters.

Embodiment 3

[0028] (1) Combine 20g diphenyl ether, 30g [omim][BF 4 ] Add 1g iron acetylacetonate into the autoclave together, stir evenly, and charge N 2 Drain the air, and finally keep N in the reactor 2 The pressure is 2kPa, the stirring speed is controlled at 1000r / min, the temperature is raised to 230°C, and the stirring is carried out for 1h. After the temperature in the reactor drops to room temperature, open the reactor, filter the product and wash with ethanol to obtain FeF 2 .

[0029] (2) The FeF 2 Put it into a ceramic crucible and fire under air atmosphere, the firing temperature is 400℃, and the firing time is 7h. After firing, three-dimensional porous α-Fe can be obtained. 2 O 3 Nanorod clusters.

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Abstract

The invention discloses a method for synthesizing a three-dimensional porous ferric oxide nano rod cluster. The method comprises the following steps of: reacting by using diphenyl ether, [omim][BF4] and ferric acetylacetonate as raw materials to prepare FeF2 with certain appearances, and roasting the FeF2 to obtain the ferric oxide nano rod cluster with a three-dimensional porous structure. The temperature required by decomposing the ferric acetylacetonate in the [omim][BF4] to generate FeF2, and the reaction time are controlled, so the FeF2 with different appearances can be obtained; and the Fe-F bond is converted into a Fe-O bond by roasting; and the method for synthesizing the three-dimensional porous ferric oxide nano rod cluster is novel, and simple and is easy to control.

Description

Technical field [0001] The invention relates to the technical field of inorganic nanomaterials, in particular to a method for synthesizing ferrous fluoride nanorod clusters with the assistance of ionic liquids, and then pyrolyzing them to synthesize three-dimensional porous iron oxide nanorod clusters. Background technique [0002] Hematite (α-Fe 2 O 3 ) Is one of the most stable iron oxides, widely used in pigment dyes, printing, and cosmetics industries. In recent years, it has been discovered that nano α-Fe 2 O 3 The material has stable properties, high catalytic activity and good light resistance. It has special properties in optics, electricity, magnetism and catalysis, especially the composite nano particles with a hierarchical structure assembled from various nanoparticles, nanorods and nanowires. Materials have become a research hotspot in the field of materials science. [0003] Current nanostructured α-Fe 2 O 3 There are many synthesis methods, such as hydrothermal metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/06B82Y40/00
Inventor 单永奎孔爱国董冰张恒强
Owner EAST CHINA NORMAL UNIV
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