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Rare earth cerium doped copper-zinc composite oxide as well as preparation method and application of rare earth cerium doped copper-zinc composite oxide

A technology of composite oxides and rare earth cerium, which is applied in the fields of botany equipment and methods, chemical instruments and methods, applications, etc., and can solve problems such as limitations in application fields

Inactive Publication Date: 2017-02-22
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Zinc oxide (ZnO) is a semiconductor material with great application and development value widely used in the preparation of antibacterial agents and in the field of organic photocatalysis. It can only be excited under ultraviolet light, so its application field is limited.

Method used

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  • Rare earth cerium doped copper-zinc composite oxide as well as preparation method and application of rare earth cerium doped copper-zinc composite oxide
  • Rare earth cerium doped copper-zinc composite oxide as well as preparation method and application of rare earth cerium doped copper-zinc composite oxide
  • Rare earth cerium doped copper-zinc composite oxide as well as preparation method and application of rare earth cerium doped copper-zinc composite oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 0.005mol copper nitrate (Cu(NO 3 ) 2 , Molecular weight: 187.56), 0.0001mol cerium nitrate (Ce(NO 3 ) 3 ·6H 2 O, molecular weight: 434.12), 0.0949mol zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O, molecular weight: 297.49) and 0.12mol citric acid (C 6 H 8 O 7 , Molecular weight: 192.14); configure 200ml of a 1:1 mixed solution of water:ethanol, use this mixed solution as a solvent, add zinc nitrate, copper nitrate, cerium nitrate and citric acid to the solvent, and ultrasonically disperse at room temperature for 20 minutes to obtain Stable, uniform and transparent sol; in a water bath at 80°C, the sol is coagulated under magnetic stirring to obtain a gel, aged at room temperature for 10 hours, and then placed in an oven, dehydrated, dried and ground at 80°C to obtain a precursor powder ; The precursor powder is heat treated at 500° C. to obtain Ce-CuO-ZnO doped with rare earth cerium, containing 5.00 mol% Cu and 0.10 mol% Ce.

[0025] The obtained copper-zinc composite oxide Ce-C...

Embodiment 2

[0028] Example 2 (comparative example)

[0029] Weigh 0.005mol copper nitrate (Cu(NO 3 ) 2 , Molecular weight: 187.56), 0.095mol zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O, molecular weight: 297.49) and 0.12mol citric acid (C 6 H 8 O 7 , Molecular weight: 192.14); configure 200ml of a mixed solution with a volume ratio of water: ethanol of 1:1, use this mixed solution as a solvent to dissolve the above-mentioned drugs under the action of ultrasound, and ultrasound for 20 minutes at room temperature to obtain a stable, uniform and transparent sol; In a water bath at 80°C, the colloidal solution was coagulated under magnetic stirring to obtain a gel. The gel was aged for 10 hours at room temperature, and then placed in an oven, dehydrated, dried, and ground at 80°C to obtain precursor powder; Heat treatment at ℃ to obtain copper-zinc oxide (CuO-ZnO) not doped with rare earth cerium.

[0030] In order to study the antibacterial rate of Ce-CuO-ZnO, the present invention adopts the sterilization...

Embodiment 3

[0035] According to the preparation steps described in Example 1, the amount of chemical agents was changed, and 0.003 mol of copper nitrate (Cu(NO 3 ) 2 , Molecular weight: 187.56), 0.0001mol cerium nitrate (Ce(NO 3 ) 3 ·6H 2 O, molecular weight: 434.12), 0.0969mol zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O, molecular weight: 297.49) and 0.12mol citric acid (C 6 H 8 O 7 , Molecular weight: 192.14). Prepare Ce-CuO-ZnO doped with rare earth cerium containing 3.00 mol% Cu and 0.10 mol% Ce.

[0036] According to the preparation steps described in Example 1, the amount of chemical agent was changed, and 0.0001 mol of cerium nitrate (Ce(NO 3 ) 3 ·6H 2 O, molecular weight: 434.12), 0.0999mol zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O, molecular weight: 297.49) and 0.12mol citric acid (C 6 H 8 O 7 , Molecular weight: 192.14). Ce-ZnO doped with rare earth cerium containing 0.10 mol% Ce was prepared.

[0037] The two materials obtained in the foregoing Example 3 were combined with the rare earth cerium-doped...

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Abstract

The invention discloses a rare earth cerium doped copper-zinc composite oxide as well as a preparation method and application of the rare earth cerium doped copper-zinc composite oxide. The composite oxide is spherical Ce-CuO-ZnO particles, the particle size is 30-50nm, the crystal structure is wurtzite crystal form, and the energy gap is 2.68-3.05eV. The composite oxide comprises the following components according to mole percentage: 1.00-9.00% of CuO, 0.05-0.20% of Ce, and 90.80-98.95% of ZnO. According to the invention, the energy gap of ZnO is reduced, and the required excitation energy is lowered; and moreover, the copper-zinc composite oxide also has perfect heat resistance, the preparation technology is simple, the preparation cost is low, and the antibacterial rate still can exceed 92% after six times of repeated use while the antibacterial durability is good.

Description

Technical field [0001] The invention belongs to the field of inorganic nano antibacterial agents, and specifically relates to a copper-zinc composite oxide doped with rare earth cerium and a preparation method and application thereof. Background technique [0002] Antibacterial materials can effectively avoid or reduce cross-infection of bacteria and the spread and spread of diseases. The antibacterial and bactericidal effects of antibacterial materials are mainly the effect of adding antibacterial agents to the substrate or coating the surface of the substrate with antibacterial agents. Therefore, the antibacterial effect of the antibacterial material depends only on the antibacterial performance of the antibacterial agent. [0003] At present, the widely used antibacterial agents include: natural antibacterial agents, organic antibacterial agents and inorganic antibacterial agents. Natural antibacterial agents have short service life and are easy to decompose; organic antibacter...

Claims

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Application Information

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IPC IPC(8): A01N59/20A01P1/00C02F1/50C02F103/02
CPCA01N59/20C02F1/50C02F2103/023
Inventor 丁燕杜熠梁金生张红
Owner HEBEI UNIV OF TECH
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