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Preparation method of cadmium sulfide/ferroferric oxide composite material

A technology for ferric tetroxide and composite materials, which is applied in the field of preparation of cadmium sulfide/iron tetroxide composite materials, can solve the problems of long preparation period, complicated operation process, low preparation yield and the like, and achieves easy operation and wide application. Foreground, simple process effect

Inactive Publication Date: 2013-12-25
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods have disadvantages such as complicated operation process, long preparation cycle and low preparation yield.

Method used

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  • Preparation method of cadmium sulfide/ferroferric oxide composite material
  • Preparation method of cadmium sulfide/ferroferric oxide composite material
  • Preparation method of cadmium sulfide/ferroferric oxide composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A CdS / Fe 3 O 4 The preparation method of the composite material includes the following steps:

[0026] (1) Add 0.006 mol of cadmium nitrate and 0.01 mol of thiourea to 100 mL of deionized water, and stir to obtain a clear solution A.

[0027] (2) Add 1.8 mmol ferric nitrate and 1.53 mmol citric acid to 50 mL deionized water and stir to obtain a clear solution B.

[0028] (3) After mixing solution A and solution B evenly, place them in a beaker protected by nitrogen, place the beaker on an electric heating mantle at 300 ℃ to evaporate to a gelatinous state, and continue to heat until it burns with a large amount of gas released. Cadmium sulfide / ferroferric oxide composite material;

[0029] figure 1 , The X-ray diffraction pattern of the obtained sample is compared with CdS and Fe 3 O 4 The number and position of peaks on the standard PDF card are the same. Explain that the obtained is CdS / Fe 3 O 4 Composite materials. by figure 2 It can be seen that after 120 min of visible ...

Embodiment 2

[0031] A CdS / Fe 3 O 4 The preparation method of the composite material includes the following steps:

[0032] (1) Add 0.003 mol of cadmium nitrate and 0.005 mol of thiourea to 100 mL of deionized water, and stir to obtain a clear solution A.

[0033] (2) Add 0.45 mmol ferric nitrate and 0.38 mmol citric acid (or 1.125 mmol urea) to 50 mL deionized water and stir to obtain a clear solution B.

[0034] (3) After mixing solution A and solution B evenly, place them in a beaker protected by nitrogen, heat the solution at 250 ℃ to evaporate to a gelatinous state, continue heating until it burns with a large amount of gas released, that is, cadmium sulfide / Ferroferric oxide composite material.

Embodiment 3

[0036] A CdS / Fe 3 O 4 The preparation method of the composite material includes the following steps:

[0037] (1) Add 0.006 mol of cadmium nitrate and 0.005 mol of thiourea to 100 mL of deionized water, and stir to obtain a clear solution.

[0038] (2) Add 0.9 mmol ferric nitrate and 0.77 mmol citric acid (or 2.25 mmol urea) into 50 mL deionized water and stir to obtain a clear solution.

[0039] (3) After mixing solution A and solution B evenly, place them in a beaker protected by nitrogen, heat the solution to evaporate at 350 ℃ to a gelatinous state, continue to heat until it burns with a large amount of gas released, that is, cadmium sulfide / Ferroferric oxide composite material.

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Abstract

The invention relates to a preparation method of a cadmium sulfide / ferroferric oxide composite material. The preparation method comprises the steps of (1) adding cadmium nitrate and thiocarbamide into deionized water, and stirring to obtain a settled solution A; (2) adding ferric nitrate and citric acid / urea into the deionized water, and stirring to obtain a settled solution B; (3) after uniformly mixing the solution A with the solution B, heating and evaporating the mixed solution to be colloidal in the absence of oxygen, and continuously heating the solution until the solution is burnt and meanwhile a large number of gas is released, thereby obtaining the cadmium sulfide / ferroferric oxide composite material. The composite material not only has excellent photocatalytic performance, but also can be easily magnetically separated.

Description

technical field [0001] The invention relates to the field of inorganic synthesis of photocatalysts, in particular to a preparation method of a cadmium sulfide / ferric oxide composite material. Background technique [0002] Cadmium sulfide (CdS) is an inorganic compound of sulfur and cadmium. It is a highly sensitive N-type photoconductive device material and a piezoelectric device material. It has good photoelectric properties and has been widely used in many fields. It can also be compounded with other substances to prepare composite materials with better performance. [0003] Ferric oxide (Fe 3 o 4 ) has excellent magnetic properties, can move directionally under an external magnetic field, has superparamagnetism within a certain particle size range, and can generate heat under the action of an external alternating electromagnetic field. Its chemical properties are stable, so it has a wide range of uses. [0004] If CdS and Fe 3 o 4 Composite materials will be obtained...

Claims

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Application Information

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IPC IPC(8): B01J27/043B01J27/30C02F1/30
Inventor 张大凤刘建秀蒲锡鹏
Owner LIAOCHENG UNIV
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