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Preparation method of gamma-Fe2O3/Ni2O3 composite nano particles

A technology of nanoparticle and solution, which is applied in the field of nanomaterials and can solve the problems that the preparation of double oxide composite nanoparticles has not been reported.

Inactive Publication Date: 2010-08-25
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

γ-Fe 2 o 3 / Ni 2 o 3 The preparation of double oxide composite nanoparticles has not been reported

Method used

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  • Preparation method of gamma-Fe2O3/Ni2O3 composite nano particles
  • Preparation method of gamma-Fe2O3/Ni2O3 composite nano particles

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Precursor preparation

[0025] 1. Solution preparation

[0026] (1) Solution ①: FeCl 3 Aqueous solution (40ml, 1M);

[0027] (2) Solution ②: Ni(NO 3 ) 2 Aqueous solution (10ml, 2M), additionally added 0.05mol of HCl;

[0028] (3) Solution ③: NaOH solution (500ml, 0.7M).

[0029] 2. mix

[0030] (1) solution ① is poured into solution ② and obtains solution ② ';

[0031] (2) Under rapid stirring, the solution ③ is poured into the solution ②' to obtain the solution ③'.

[0032] 3. Reaction

[0033] (1) Heat the solution ③' on an electric furnace until boiling, and keep stirring during the heating process;

[0034] (2) After boiling for 1 minute, take it off from the electric stove and let it cool down to room temperature naturally. After 2 hours, the reddish-brown precipitate was completely separated out.

[0035] 4. Cleaning

[0036] (1) Preparation of cleaning solution

[0037] 0.01mol / L HNO 3 aqueous solution.

[0038] (2) cleaning

[0039] Mix accord...

Embodiment 2

[0050] 1. Precursor preparation

[0051] 1. Solution preparation

[0052] (1) Solution ①: FeCl 3 Aqueous solution (20ml, 2M)

[0053] (2) Solution ②: Ni(NO 3 ) aqueous solution (30ml, 0.7M) was added with 0.07mol HCl.

[0054] (3) Solution ③: Na(OH) 2 Aqueous solution (500ml, 0.7M)

[0055] 2. mix

[0056] (1) solution ① is poured into solution ② and obtains solution ② ';

[0057] (2) Under rapid stirring, the solution ③ is poured into the solution ②' to obtain the solution ③'.

[0058] 3. Reaction

[0059] (1) Heat the solution ③' on an electric furnace until boiling, and keep stirring during the heating process;

[0060] (2) After boiling for 10 minutes, take it off from the electric stove and let it cool down to room temperature naturally. After 2 hours, the reddish-brown precipitate was completely separated out.

[0061] 4. Cleaning

[0062] (1) Preparation of cleaning solution

[0063] 0.005mol / L HNO 3 aqueous solution

[0064] (2) cleaning

[0065] Mix ac...

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Abstract

The invention provides a preparation method of gamma-Fe2O3 / Ni2O3 composite nano particles. The method comprises the following two steps of: (1) in an alkaline medium, coprecipitating a mixture of Fe<3+>-Ni<2+> aqueous solutions to obtain a hydroxide precursor precipitate; and (2) obtaining gama-Fe2O3 / Ni2O3 nano particles through FeCl2 aqueous solution treatment. By adopting the method to prepare the gamma-Fe2O3 / Ni2O3 composite nano particles, the raw material cost is low, and the preparation process is easy to operate.

Description

technical field [0001] The invention belongs to the field of nanomaterials, in particular to γ-Fe 2 o 3 / Ni 2 o 3 Preparation of composite nanoparticles. Background technique [0002] Nanocomposite materials are composed of two or more phases of materials, at least one of which is smaller than 100nm. Composite materials composed of substances with different physical and chemical properties may have new properties. γ-Fe 2 o 3 It is a ferromagnetic material with strong magnetism, Ni 2 o 3 It has the functions of waste gas and waste water treatment. γ-Fe 2 o 3 / Ni 2 o 3 The preparation of double oxide composite nanoparticles has not been reported. Contents of the invention [0003] The present invention proposes a method for preparing gamma-Fe 2 o 3 / Ni 2 o 3 Methods of Composite Nanoparticles (ie Oxide-Oxide Composite Nanoparticles). [0004] The preparation method of the present invention is specifically as follows: [0005] Step 1: Preparation of Prebod...

Claims

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Application Information

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IPC IPC(8): B82B3/00
Inventor 李建张清梅文榜才
Owner SOUTHWEST UNIVERSITY
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