Beta-FeOOH nanorod and preparation method thereof

A technology of nanorods and hydrolysis reaction, which is applied in the field of inorganic nanomaterials, can solve problems such as complex operation, difficult to reach nanoscale products, and harsh conditions, and achieve the effects of wide sources, uniform shape, and mild reaction conditions

Inactive Publication Date: 2020-09-04
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the object of the present invention is to provide a β-FeOOH nanorod and its preparation method to solve the problem that the existing β-FeOOH preparation method has harsh conditions, complicated operation and difficult to achieve nanoscale products. technical issues

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  • Beta-FeOOH nanorod and preparation method thereof
  • Beta-FeOOH nanorod and preparation method thereof
  • Beta-FeOOH nanorod and preparation method thereof

Examples

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Embodiment 1

[0035] (1) 0.5mL PEI (polyethyleneimine) was dissolved in 100mL deionized water, and 5.4g (20mmol) of ferric chloride containing six crystal waters was added thereto, and a uniform mixed solution was formed under magnetic stirring, The mixed solution is orange-red.

[0036] (2) The mixed solution in step 1) was placed in a constant temperature oil bath reactor at 80° C., under magnetic stirring, and hydrolyzed for 2 hours.

[0037] (3) The liquid after the hydrolysis reaction was centrifuged and washed three times with deionized water, the yellow precipitate after centrifugation and washing was collected, and the precipitate was ultrasonically dispersed in deionized water to obtain β-FeOOH nanorods.

[0038] The morphology of the β-FeOOH nanorods prepared in this example was characterized, and the transmission electron microscopy results were as follows: figure 1 shown, from figure 1 It can be seen that the average diameter of β-FeOOH nanorods is about 10 nm and the length i...

Embodiment 2

[0040] (1) 0.3mL PEI was dissolved in 100mL deionized water, and 5.4g (20mmol) ferric chloride containing six crystal waters was added thereto, and magnetically stirred to form a uniform mixed solution, which was orange-red.

[0041] (2) The mixed solution in step 1) was placed in a constant temperature oil bath reactor at 80° C., and hydrolyzed for 2.5 hours under magnetic stirring.

[0042] (3) The liquid after the hydrolysis reaction was centrifuged and washed three times with deionized water, the yellow precipitate after centrifugation and washing was collected, and the yellow precipitate was ultrasonically dispersed in the deionized aqueous solution to obtain β-FeOOH nanorods.

[0043] The morphology of the β-FeOOH nanorods prepared in this example was characterized, and the transmission electron microscopy results were as follows: figure 2 and image 3 as shown, figure 2 The scale bar is 200nm, image 3 The scale bar is 100nm, from figure 2 and image 3 It can be...

Embodiment 3

[0045] (1) 1.0mL PEI was dissolved in 100mL deionized water, and 5.4g (20mmol) ferric chloride containing six crystal waters was added thereto, and magnetically stirred to form a uniform mixed solution, which was orange-red.

[0046] (2) The mixed solution in step 1) was placed in a constant temperature oil bath reactor at 85° C., and hydrolyzed for 2 hours under magnetic stirring.

[0047] (3) The liquid after the hydrolysis reaction was centrifuged and washed four times with deionized water, and the yellow precipitate after centrifugation and washing was collected, and the yellow precipitate was ultrasonically dispersed in the deionized aqueous solution to obtain β-FeOOH nanorods.

[0048] The β-FeOOH nanorods obtained in this embodiment were characterized by a transmission electron microscope, and the result was: the diameter of the β-FeOOH nanorods was about 10 nm, and the length was 50±5 nm.

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Abstract

The invention discloses a beta-FeOOH nanorod and a preparation method of the beta-FeOOH nanorod. The preparation method comprises the following steps: taking ferric trichloride, polyethyleneimine anddeionized water as raw material agents, uniformly dispersing the ferric trichloride into a polyethyleneimine water solution, heating in an oil bath to carry out hydrolysis reaction, cooling a productto room temperature, carrying out centrifugal washing for multiple times, and dispersing precipitates into the deionized water; the prepared beta-FeOOH nanorod is good in dispersity in the deionized water; the diameter of the material is about 10-15nm, and the length of the material is about 35-185nm. The beta-FeOOH nanorod prepared by the invention can stably exist in an aqueous solution, the preparation process is simple, the raw material is wide in source and low in cost, the reaction is carried out under normal pressure, the requirement on reaction equipment is lower, the operation is safe, the beta-FeOOH nanorod is non-toxic and harmless, green and environment-friendly, the process flow controllability is strong, the yield is high, and the method is suitable for large-scale industrialproduction.

Description

technical field [0001] The invention belongs to the technical field of inorganic nanometer materials, and relates to a β-FeOOH nanorod and a preparation method thereof. Background technique [0002] As a natural mineral, β-FeOOH widely exists in soil water and sediments, and has attracted extensive attention because of its special tunnel structure, stable physical and chemical properties, huge specific surface area and nanostructure. As a commonly used yellow inorganic dye, it has been used in water-based paints and oil-based paints, and it has a special tunnel structure, which is an important raw material for the preparation of electrode materials and flame-retardant materials. Due to the high specific surface area, high stability and abundant hydroxyl groups of β-FeOOH, it is often used in the oxidation adsorption of metal ions and organic dyes in wastewater treatment and as a photocatalyst. In addition, β-FeOOH is also one of the important precursors for the preparation ...

Claims

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Application Information

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IPC IPC(8): C01G49/02B82Y40/00
CPCC01G49/02B82Y40/00C01P2004/16C01P2004/04C01P2004/51
Inventor 杨冬雷蕾高可奕王雪王丽霞贾彤彤
Owner SHAANXI UNIV OF SCI & TECH
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