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Preparation method of visible light activated brick-shaped nano-copper ferrite photocatalyst and application thereof

A photocatalyst and nano-iron technology, which is applied in the field of environmental pollution control, can solve the problems of brick-like nano-copper ferrite photocatalyst with no photocatalytic properties and failure to further explore the photoelectric catalytic activity of zinc ferrite and uneven particle distribution. , to achieve the effects of visible light catalytic activity and stability improvement, good optoelectronic properties, and the preparation process is simple and easy to operate.

Inactive Publication Date: 2013-04-24
LIAONING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, A.A. Farghali et al. (A.A. Farghali, M.H. Khedr and A.A.A. Khalek, J. Mater. Processing Techn. 2007, 181, 81) prepared nano copper ferrite by ball milling method, the particle size is about 220 nm, but the particle distribution and It is uneven and takes a long time; M. Wang et al. (M .Wang, Z. Ai and L. Zhang, J. Phys. Chem. C, 2008, 112, 13163) reported that the nano-zinc ferrite superstructure was produced at room temperature using the chemical co-precipitation method. However, the photoelectrocatalytic activity of the superstructured zinc ferrite has not been further explored
[0004] At present, common non-toxic and harmless raw materials are used as copper ferrite precursors, without the assistance of various surfactants or templates, through a simple, easy-to-operate and environmentally friendly method to prepare regular-shaped, uniform-sized, clear-cut, dispersed Better brick-like copper ferrite nanomaterials are rarely reported
Moreover, there are no relevant reports and applications on the photocatalytic properties of brick-like nano-copper ferrite photocatalysts with visible light activity.

Method used

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  • Preparation method of visible light activated brick-shaped nano-copper ferrite photocatalyst and application thereof
  • Preparation method of visible light activated brick-shaped nano-copper ferrite photocatalyst and application thereof
  • Preparation method of visible light activated brick-shaped nano-copper ferrite photocatalyst and application thereof

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preparation example Construction

[0027] The preparation method of the brick-like nano copper ferrite photocatalyst activated by visible light of the present invention, the steps are as follows:

[0028] (1) Preparation of brick-like nano-copper ferrite photocatalyst precursor solution: take 100 mL each of 0.1 M copper sulfate solution, 0.2 M ferrous sulfate solution, and 0.1 M sodium oxalate solution, mix the above solutions Magnetic stirring was carried out at 75 °C or 80 °C or 85 °C for 0.5 h or 1 h to make the mixture fully mixed to generate a light yellow iron-copper oxalate precursor solution, and the stirring was continued until no precipitation occurred anymore.

[0029] (2) Washing and drying: After naturally cooling to room temperature (15-30°C), the precipitate in the above step (1) is centrifuged, washed with deionized water, and washed with absolute ethanol (it is better to wash three times each) into Drying in a vacuum oven at 75°C or 80°C or 85°C for 22 h or 24 h or 26 h finally obtained a stabl...

Embodiment 1

[0034]Take 100 mL each of 0.1 M copper sulfate solution, 0.2 M ferrous sulfate solution, and 0.1 M sodium oxalate solution, mix the above solutions, and carry out magnetic stirring at 80 °C for 1 h, so that the mixture is fully mixed to form Light yellow iron copper oxalate precursor solution, keep stirring until no more precipitation occurs.

[0035] (2) Washing and drying: After naturally cooling to room temperature (15-30°C), the precipitate in the above step (1) is centrifuged, washed with deionized water, and washed with absolute ethanol (it is better to wash three times each) into Drying in a vacuum oven at 75°C or 80°C or 85°C for 22 h or 24 h or 26 h finally obtained a stable and uniform light yellow iron-copper oxalate precursor powder.

[0036] (3) Calcination: Calcinate the precursor powder in the above step (2) at 300°C or 400°C or 500°C or 600°C or 700°C in air for 1.5 h or 1 or 2 h or 2.5 h to obtain brown ferric acid copper samples.

Embodiment 2

[0038] According to the preparation method of the present invention in Example 1, only the calcination temperature was changed to 400° C. to obtain a brown visible light-activated brick-like nano-copper ferrite photocatalyst.

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Abstract

The invention relates to a preparation method of visible light activated brick-shaped nano-copper ferrite photocatalyst and an application thereof. The preparation method comprises the following steps: preparing precursor solution, comprising respectively taking 100mL 0.1M copper sulfate solution, 100mL 0.2M ferrous sulfate solution and 100mL 0.1M sodium oxalate solution, mixing the solutions and then magnetically stirring for 0.5-1h at the temperature of 75-85 DEG C so that the mixture is completely mixed, generating precursor solution of light yellow nantokite ferric oxalate, and continuously stirring till no precipitate is generated; after naturally cooling, carrying out centrifuging, deionized water washing and absolute ethyl alcohol washing, and then carrying out drying processing so as to obtain the precursor powder of light yellow nantokite ferric oxalate; and calcining for 1.5-2.5h in the air at the temperature of 300-700 DEG C so as to obtain brown copper ferrite sample.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, and relates to a preparation method of an inorganic narrow bandgap semiconductor copper ferrite nano photocatalyst, in particular to a wet chemical preparation method of a brick-like nano copper ferrite photocatalyst with visible light activity and Its application in the field of environment. Background technique [0002] spinel structure AB 2 o 4 Type composite metal oxides are a wide variety of compounds, most of which are semiconductor materials with narrow band gaps. Spinel materials have the characteristics of stable structure, narrow band gap, and diverse composition. They can form continuous solid solutions through cation replacement or substitution, which enriches the solid-state chemical information and facilitates the construction of multilayer structure composite oxides. As a visible light-responsive spinel semiconductor material, the composition of the compo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745C02F1/30C02F101/36
CPCY02W10/37
Inventor 朱正如李新勇曹永强
Owner LIAONING NORMAL UNIVERSITY
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