Method for self-assembling near-spherical Sm2O3/CuO nanometer composite

A nano-composite and spherical-like technology, which is applied in chemical instruments and methods, chemical/physical processes, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of low visible spectrum responsivity and achieve process equipment Simple, good crystallinity, uniform heating effect

Active Publication Date: 2015-05-06
深圳市汇益德环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] SM 2 o 3 As a wide bandgap semiconductor, it has good research prospects in photodegradation of organic matter, but due to the wide bandgap (Eg=4.4eV), the responsivity to the visible spectrum is low

Method used

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  • Method for self-assembling near-spherical Sm2O3/CuO nanometer composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) First, the analytically pure SmCl 3 ·6H 2 O was dissolved in an appropriate amount of deionized water under magnetic stirring to obtain a solution A with a concentration of 0.5mol / L; the CuCl 2 2H 2 O is dissolved in deionized water under magnetic stirring to form a solution B with a concentration of 0.5mol / L;

[0022] 2) Next, mix the two solutions of A and B according to the volume ratio of 1:1, heat and adjust the pH of the solution to 7 with an ammonia solution with a mass percentage of 5% to form a reaction precursor;

[0023] 3) Then, pour the reaction precursor solution into a hydrothermal kettle with a filling degree of 55%, seal the kettle and put it into a microwave hydrothermal reaction apparatus, react at 200° C. for 2 hours, and naturally cool to room temperature after the reaction;

[0024] 4) Finally, the sample was centrifuged and washed with distilled water and absolute ethanol for 4 to 6 times, and then placed in a muffle furnace for calcination ...

Embodiment 2

[0026] 1) First, the analytically pure SmCl 3 ·6H 2 O was dissolved in an appropriate amount of deionized water under magnetic stirring to obtain a solution A with a concentration of 1mol / L; the CuCl 2 2H 2 O is dissolved in deionized water under magnetic stirring to form a solution B with a concentration of 0.5mol / L;

[0027] 2) Next, mix the two solutions of A and B according to the volume ratio of 1:0.5, heat and adjust the pH of the solution to 5.5 with an ammonia solution with a mass percentage of 8% to form a reaction precursor;

[0028] 3) Then, pour the reaction precursor solution into a hydrothermal kettle with a filling degree of 60%, seal the kettle and put it into a microwave hydrothermal reactor, react at 150° C. for 2 hours, and naturally cool to room temperature after the reaction;

[0029] 4) Finally, the sample was centrifuged and washed with distilled water and absolute ethanol for 4 to 6 times, and then placed in a muffle furnace for calcination at 800 °C...

Embodiment 3

[0031] 1) First, the analytically pure SmCl 3 ·6H 2 O was dissolved in an appropriate amount of deionized water under magnetic stirring to obtain a solution A with a concentration of 2mol / L; the CuCl 2 2H 2 O is dissolved in deionized water under magnetic stirring to form a solution B with a concentration of 1mol / L;

[0032] 2) Next, mix the two solutions of A and B according to the volume ratio of 1:2, heat and adjust the pH of the solution to 8 with an ammonia solution with a mass percentage of 10% to form a reaction precursor;

[0033] 3) Then, pour the reaction precursor solution into a hydrothermal kettle with a filling degree of 75%, seal the kettle and put it into a microwave hydrothermal reactor, react at 120° C. for 2 hours, and naturally cool to room temperature after the reaction;

[0034] 4) Finally, the sample was centrifuged and washed with distilled water and absolute ethanol for 4 to 6 times, and then placed in a muffle furnace for calcination at 600°C for 4...

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Abstract

The invention discloses a method for self-assembling a near-spherical Sm2O3 / CuO nanometer composite. The method comprises the following steps: adding SmCl3.6H2O to deionized water under magnetic stirring to prepare a solution A; dissolving CuCl2.2H2O in deionized water under magnetic stirring to form a solution B; mixing the solution A with the solution B according to different volume ratios and regulating pH of the solution to 5-8 by using an ammonia water solution to form a reaction precursor solution; pouring the reaction precursor solution into a hydrothermal kettle, placing into a microwave hydrothermal reaction instrument to perform a hydrothermal reaction after sealing the kettle, naturally cooling to room temperature after the reaction is ended; and centrifugally washing a sample and drying, and calcining in a muffle furnace at temperature of 500-800 DEG C for 2-5h to obtain the self-assembled near-spherical Sm2O3 / CuO nanometer composite. A reaction medium adopted by the method disclosed by the invention is a water solution; the method is high in safety, easily available in reaction raw materials, strong in feasibility, and simple in process equipment.

Description

【Technical field】 [0001] The invention belongs to the field of preparation of nano-semiconductor composite materials, in particular to a Sm 2 o 3 / CuO nanocomposite approach. 【Background technique】 [0002] SM 2 o 3 It is a kind of light yellow powder, easy to deliquescence, insoluble in water, easily soluble in inorganic acid. It is a new generation of energy conversion materials and photoelectric thin film materials. Nanoscale Sm 2 o 3 It has potential application value in many fields of functional materials such as high-efficiency light-emitting devices, magnetic materials, and catalytic materials. As a wide bandgap semiconductor, it has considerable research and application prospects in the photocatalytic degradation of organic pollutants. [0003] SM 2 o 3 As a wide bandgap semiconductor, it has a good research prospect in photodegradation of organic matter, but because of its wide bandgap (Eg=4.4eV), it has low responsivity to the visible spectrum. 【Content o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83
Inventor 殷立雄韩鑫裴宇梁宋华虎张东东黄剑锋孔新刚柴思敏
Owner 深圳市汇益德环保材料有限公司
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