Preparation method and application of ferroferric-oxide-supported cobalt selenide magnetic nano composite material

A technology of ferroferric oxide and magnetic nanometers, which is applied in the preparation of organic compounds, preparation of amino hydroxyl compounds, chemical instruments and methods, etc., can solve the problem of little reduction of nitrophenol, and achieve easy control and rapid adsorption of methylene blue dyes , conducive to the effect of repeated use

Inactive Publication Date: 2012-10-17
ANHUI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There have been related reports on ferroferric oxide composite materials, such as the compounding of ferric oxide and graphene, the compounding of ferric oxide and silicon dioxide, silver, the compounding of ferric oxide and titanium dioxide, etc., but the compounding of ferric oxide The complex of Fe3 and CoSe has not been reported so far
It is worth noting that there are few studies on the reduction of p-nitrophenol catalyzed by magnetic materials.

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  • Preparation method and application of ferroferric-oxide-supported cobalt selenide magnetic nano composite material
  • Preparation method and application of ferroferric-oxide-supported cobalt selenide magnetic nano composite material
  • Preparation method and application of ferroferric-oxide-supported cobalt selenide magnetic nano composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: Preparation of cobalt selenide magnetic nanocomposite material loaded with ferric oxide:

[0028] First, non-integer ratio tremella-like cobalt selenide (Co 0.85 Se) nanosheets, (Applied Catalysis B: Environmental 2012, 119-120, 139-145.), and then 3 mmoles of prepared non-integer ratio tremella-like cobalt selenide nanosheets, 40 ml containing 1 mmoles of FeCl 3 The aqueous solution and 0.528 g of Vc were successively added to a 100 ml autoclave, ultrasonicated for 30 seconds, then 10 ml of hydrazine hydrate (80%) was added under magnetic stirring, and the stirring was continued for 20 minutes. After fully mixing, the airtight reactor was placed in In an oven at 180 degrees Celsius, after reacting for 8 hours, take out the reaction kettle, cool naturally, wash with ethanol and distilled water three times each, collect with a magnet and dry at 60 degrees Celsius to obtain a cobalt selenide magnetic nanocomposite material loaded with ferric oxide.

[0029]...

Embodiment 2

[0034] Embodiment 2: the reduction of catalysis p-nitrophenol:

[0035] 0.1 ml of 5.0 x 10 -3 M's p-nitrophenol solution and 2 milliliters of distilled water were added to the quartz cuvette successively, and there was an absorption peak at 300 nanometers when measured with a UV-visible spectrophotometer; Sodium solution is measured with an ultraviolet-visible spectrophotometer and has an absorption peak at 400 nanometers, and the concentration corresponding to this absorption peak is defined as the initial concentration; finally add 1 mg of cobalt selenide magnetic nanocomposite material loaded with ferric oxide , measured with a UV-Vis spectrophotometer every 1 minute, until the peak around 400 nm no longer changes significantly.

[0036] The properties of catalytic p-nitrophenol of the samples were tested by Shimadzu UV-3600 ultraviolet spectrophotometer.

[0037] Figure 8 , Figure 9 Be the ultraviolet-visible absorption curve of the product of this example to catalyz...

Embodiment 3

[0038] Embodiment 3: to the adsorption of methylene blue dye:

[0039] Configure 100 milliliters of 5mg / L methylene blue solution, weigh 50 milligrams of cobalt selenide magnetic nanocomposites loaded with ferric oxide, mix the two, take the mixed solution every 5 minutes under the condition of magnetic stirring, and then After centrifugation, measure with a UV-Vis spectrophotometer until the color of the solution does not change significantly. After the experiment, the remaining samples were separated and collected with a magnet for easy reuse.

[0040] Shimadzu UV-3600 ultraviolet spectrophotometer was used to test the adsorption properties of methylene blue dye of the samples.

[0041] Figure 10 Be the ultraviolet-visible absorption curve that the product of this example adsorbs methylene blue at room temperature, by Figure 10 It can be seen that 50 mg of cobalt selenide magnetic nanocomposite material loaded with ferric oxide can completely absorb 100 ml of 5 mg / L met...

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Abstract

The invention provides a method for preparing and synthesizing a ferroferric-oxide-supported cobalt selenide magnetic nano composite material by a hydrothermal process and application thereof, belonging to the technical field of preparation and application of nano materials. The invention does not need to previously prepare any template or use any surfactant, has the advantage of mild reaction process, and is easy to control; and the obtained ferroferric-oxide-supported cobalt selenide magnetic nano composite material has high activities in catalyzing reduction of nitrophenol and adsorbing methylene blue. The result indicates that 1mg of ferroferric-oxide-supported cobalt selenide magnetic nano composite material can completely catalyze the nitrophenol in 0.1ml of 5.0*10<-3>M nitrophenol solution by only 13 minutes; and 50mg of ferroferric-oxide-supported cobalt selenide magnetic nano composite material can completely adsorb the methylene blue in 50ml of 5mg/L methylene blue solution by only 25 minutes. Besides, the prepared sample has magnetic property, thus, can be conveniently separated and collected with a magnet, and is convenient for recycling.

Description

Technical field: [0001] The invention belongs to the technical field of nanomaterial preparation and application, and specifically relates to the preparation of a cobalt selenide magnetic nanocomposite material loaded with ferric oxide by a hydrothermal method. The material has the functions of efficiently catalyzing the reduction of p-nitrophenol and rapidly adsorbing methylene blue dye nature. Background technique: [0002] Nanocomposites have superior physical and chemical properties than single components. There have been related reports on ferroferric oxide composite materials, such as the compounding of ferric oxide and graphene, the compounding of ferric oxide and silicon dioxide, silver, the compounding of ferric oxide and titanium dioxide, etc., but the compounding of ferric oxide The compounding of triiron and cobalt selenide has not been reported so far. [0003] British "Journal of Materials Chemistry" (Journal of Materials Chemistry, 2010, volume 20, page 9355...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/30B01J27/057C07C215/76C07C213/02
Inventor 宋吉明张松松赵京凤刘程成张胜义牛和林毛昌杰沈玉华
Owner ANHUI UNIVERSITY
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