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Method for preparing cobalt-doped zinc oxide (CoxZn1-xO) multifunctional magnetic nano powder by alcohol heating process

A technology of coxzn1-xo and magnetic nanometers, which is applied in the field of preparation of cobalt-doped zinc oxide multifunctional magnetic nanopowders by alcohol thermal method, can solve the problems of small nanopowder particles, difficulty in photocatalyst recycling, etc. Excellent room temperature ferromagnetism and photocatalytic properties, good dispersion effect

Inactive Publication Date: 2010-10-27
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, a large number of studies have shown that zinc oxide nanopowders have a good degradation effect on organic substances such as methylene blue, methyl orange, and tetrachlorophenol. Undoubtedly, if it is possible to prepare a material that is both photocatalytic and easy to recycle, it will become the focus of researchers.

Method used

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  • Method for preparing cobalt-doped zinc oxide (CoxZn1-xO) multifunctional magnetic nano powder by alcohol heating process
  • Method for preparing cobalt-doped zinc oxide (CoxZn1-xO) multifunctional magnetic nano powder by alcohol heating process
  • Method for preparing cobalt-doped zinc oxide (CoxZn1-xO) multifunctional magnetic nano powder by alcohol heating process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] At room temperature, weigh 1.0412g Zn(NO 3 ) 2 ·6H 2 O(0.0035mol), 0.4365g Co(NO 3 ) 2 ·6H 2 O (0.0015mol), measure 55ml of ethylene glycol and put it into a three-necked flask, mechanically stir at a speed of 500rpm for 20 minutes, then add 3.6g of anhydrous sodium acetate and 1.1ml of polyethylene glycol-200 for ultrasonic dispersion for 40 minutes, and wait for complete After dissolving and dispersing evenly, pour the above solution into the reaction kettle, raise the temperature to 200° C., and react for 12 hours. After the reaction was completed, it was naturally cooled to room temperature, centrifuged at 7000rpm for 10 minutes to obtain the product; the product was washed with deionized water 4 times and absolute ethanol twice, and then dried at 50°C for 6 hours to obtain Co 0.3 Zn 0.7 O multifunctional magnetic nano powder. figure 1 This is the X-ray diffraction pattern of the product synthesized in this example, and compared with the standard XRD pattern,...

Embodiment 2

[0045] At room temperature, weigh 0.8766g Zn(CH 3 COO) 2 2H 2 O(0.004mol), 0.2491g Co(CH 3 COO) 2 4H 2 O (0.001mol), measure 60ml of ethylene glycol into a three-necked flask, mechanically stir at 600rpm for 40 minutes, then add 3g of anhydrous sodium acetate, 1.2ml of polyethylene glycol-200 and ultrasonically disperse for 60 minutes, until completely dissolved After uniform dispersion, the above solution was poured into the reaction kettle, the temperature was raised to 180° C., and the reaction was carried out for 14 hours. After the reaction was completed, it was naturally cooled to room temperature, and centrifuged at 6000rpm for 20 minutes to obtain the product; the product was washed with deionized water and absolute ethanol three times, and then dried at 60°C for 5 hours to obtain Co 0.2 Zn 0.8 O multifunctional magnetic nano powder. Figure 4 This is the X-ray diffraction pattern of the product synthesized in this example, and compared with the standard XRD pat...

Embodiment 3

[0047] At room temperature, weigh 0.6133g ZnCl 2 (0.0045mol), 0.1189g CoCl 2 ·6H 2 O (0.0005mol), measure 45ml of ethylene glycol into a three-necked flask, mechanically stir at 700rpm for 30 minutes, then add 4g of anhydrous sodium acetate, 1ml of polyethylene glycol-200 and ultrasonically disperse for 30 minutes, until completely dissolved and dispersed After uniformity, the above solution was poured into the reaction kettle, the temperature was raised to 200°C, and the reaction was carried out for 10 hours. After the reaction was completed, it was naturally cooled to room temperature and centrifuged at 8000 rpm for 5 minutes to obtain the product; the product was washed 6 times with deionized water and 1 time with absolute ethanol, and then dried at 40°C for 12 hours to obtain Co 0.1 Zn 0.9 O multifunctional magnetic nano powder. Image 6 This is the X-ray diffraction pattern of the product synthesized in this example, and compared with the standard XRD pattern, it show...

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Abstract

The invention relates to a method for preparing cobalt-doped zinc oxide (CoxZn1-xO) multifunctional magnetic nano powder by an alcohol heating process, which comprises the following steps of: (1) dissolving soluble cobalt salts and zinc salts in glycol at room temperature, mechanically stirring, adding anhydrous sodium acetate and polyethylene glycol, and carrying out ultrasonic dispersion to obtain a reaction solution; (2) carrying out alcohol heating reaction on the reaction solution at 180-220 DEG C for 10-14 hours, and naturally cooling to room temperature; (3) and centrifuging the product, washing and drying to obtain the CoxZn1-xO multifunctional magnetic powder. The method has the advantages of simpleness and low cost and is suitable for industrial production; and the prepared CoxZn1-xO nano powder has the advantages of pure crystalline phase, uniform size and good dispersibility, can not easily conglobate, has excellent room temperature ferromagnetism and photocatalysis, and shows obvious magnetic field response under the action of an external magnetic field.

Description

technical field [0001] The invention belongs to the field of preparation of doped zinc oxide magnetic nanopowder, in particular to an alcohol-thermal method for preparing cobalt-doped zinc oxide (Co x Zn 1-x O) the method of multifunctional magnetic nanometer powder. Background technique [0002] In recent years, dilute magnetic semiconductors (DMS) have received extensive attention, which can combine magnetism and oxides with semiconducting properties, making oxides ferromagnetic at room temperature, which has potential for the development of spintronic devices. Applications. It is theoretically predicted that ZnO-based dilute magnetic semiconductors possess ferromagnetism at room temperature, so the preparation of room-temperature ferromagnetic ZnO-based dilute magnetic nanopowders has become one of the research hotspots. Among them, the zinc oxide matrix plays a vital role. Its characteristics are: zinc oxide is a wide bandgap direct bandgap semiconductor with a wurtzi...

Claims

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Application Information

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IPC IPC(8): C01G9/02B82B3/00
Inventor 李耀刚刘志福王宏志张青红
Owner DONGHUA UNIV
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