Ferroferric oxide/carbon/cadmium sulfide composite nano material and preparation method thereof

A technology of composite nanomaterials and ferroferric oxide, which is applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the complicated process, uneven shape and size of composite materials, and poor dispersion and other problems, to achieve the effect of simple process, suitable size and strong magnetism

Inactive Publication Date: 2015-01-14
ZHEJIANG NORMAL UNIVERSITY
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  • Application Information

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Problems solved by technology

In summary, although the materials synthesized by the above-mentioned scholars have photocatalytic properties in the visible light band and can be recycled, they have the following disadvantages: the shape and size of the composite materials are not uniform, the dispersion is not good, and the internal four Ferric oxide / carbon materials are synthesized in multiple steps, and the process is cumbersome

Method used

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  • Ferroferric oxide/carbon/cadmium sulfide composite nano material and preparation method thereof
  • Ferroferric oxide/carbon/cadmium sulfide composite nano material and preparation method thereof
  • Ferroferric oxide/carbon/cadmium sulfide composite nano material and preparation method thereof

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preparation example Construction

[0028] The invention provides a preparation method of ferric oxide / carbon / cadmium sulfide composite nanomaterial, comprising the following steps:

[0029] Step A: Add ferrocene to acetone, stir ultrasonically to form a mixed solution, then add hydrogen peroxide dropwise to the mixed solution, stir and transfer to an autoclave and heat, centrifugally clean, and disperse into ethanol to form Fe 3 o 4 C nanoparticle, means coating;

[0030] Step B: cadmium nitrate is added to ethanol and water to form a transparent solution, and the Fe 3 o 4 C nanoparticles were added into the transparent solution, ultrasonically dispersed, heated in a water bath and then centrifugally cleaned to form Fe 3 o 4 CCd 2+ Nanoparticles, meaning encapsulation;

[0031] Step C: the Fe 3 o 4 CCd 2+ Nanoparticles, thioacetamide and water are mixed, microwaved after stirring, centrifugally cleaned, dried and milled to form ferric oxide / carbon / cadmium sulfide composite nanometer material.

[0032]...

Embodiment 1

[0041] The preparation method of ferric oxide / carbon / cadmium sulfide composite nanomaterial comprises the following steps:

[0042] A. With ferric oxide nanocrystals as the core, a carbon shell is coated on its surface:

[0043] a. Add 0.6 grams of ferrocene to 30 milliliters of acetone, and ultrasonically disperse for 10 minutes to form a homogeneous mixture;

[0044] b. Add 3mL hydrogen peroxide dropwise to the mixture formed in the previous step, and stir evenly;

[0045] c. Transfer the mixed solution formed in the previous step into a 50 ml autoclave and put it into an oven to keep heating at 210 degrees Celsius for one day;

[0046] d. Centrifuge the mixed solution formed in the previous step, and then disperse it in 6 ml of ethanol to form Fe 3 o 4 C nanoparticle, means coating;

[0047] B. Uniformly wrap cadmium sulfide nanoparticles on the surface of the carbon layer:

[0048] e. Add 0.01 mmol (3.0847 grams) of cadmium nitrate to 9 milliliters of ethanol and 10...

Embodiment 2

[0055] On the basis of Example 1, change the hydrogen peroxide in step b in A to 0.5 ml.

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Abstract

The invention provides a ferroferric oxide/carbon/cadmium sulfide composite nano material and a preparation method thereof. The preparation method comprises the following steps: firstly, synthesizing one-pack-one Fe3O4@C nano particles with good monodispersity by using a hydrothermal process, wherein the 'one-pack-one' means that one Fe3O4@C nano particle is only wrapped in one carbon layer; then obtaining Fe3O4@C@Cd<2+> by means of simple adsorption; and finally forming Fe3O4@C@CdS nano particles by adopting a microwave method. Compared with the prior art, the preparation method provided by the invention is simple in process and easy to operate; the prepared material has the characteristics of proper size, uniform structure, relatively strong magnetism and good photocatalysis effect; the material has a uniform spherical core-shell structure, is relatively good in dispersity in a solution, can perform a photocatalysis action under the irradiation of visible light; and because the composite nano material has magnetism, the composite nano material can be recycled for multiple times by using a magnet.

Description

technical field [0001] The invention relates to the technical field of preparation of inorganic nano-materials, in particular to a composite nano-material of ferric oxide / carbon / cadmium sulfide and a preparation method thereof. Background technique [0002] Cadmium sulfide (CdS) is a very important II-VI compound semiconductor photocatalyst with a band gap of 2.41eV and an electron mobility of , with a relative dielectric constant of 11.6, good visible light absorption response and redox ability of photogenerated hole electrons, and can be used to degrade organic molecular groups. CdS has been widely used in solar cells, photosensitive sensor materials, nonlinear optical materials and photochemical catalytic materials due to its excellent photoelectromagnetic properties. Among them, CdS, as a photocatalyst, has been widely used in the fields of life and environmental protection such as coatings, antibacterial agents, water treatment, and pollutant degradation. Under the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/049B01J35/08
Inventor 谢坚坚李正全李丹
Owner ZHEJIANG NORMAL UNIVERSITY
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