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a fe 3 o 4 /zno nanocomposite and its synthesis method

A technology of nanocomposites and synthesis methods, applied in the field of Fe3O4/ZnO nanocomposites and their synthesis, can solve problems affecting the recovery and recycling of nanocomposites, unsatisfactory magnetic properties, and low mass specific gravity, etc., and achieve suitable scale Promotion of globalization, strong magnetism, beneficial to recovery and recycling

Active Publication Date: 2021-11-16
HUANGSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the nanocomposites prepared by this method, Fe 3 o 4 The mass proportion is not high, resulting in unsatisfactory magnetic properties, which affects the recovery and recycling of nanocomposites

Method used

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  • a fe <sub>3</sub> o <sub>4</sub> /zno nanocomposite and its synthesis method
  • a fe <sub>3</sub> o <sub>4</sub> /zno nanocomposite and its synthesis method
  • a fe <sub>3</sub> o <sub>4</sub> /zno nanocomposite and its synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] a kind of Fe 3 o 4 The synthetic method of / ZnO nanocomposite, comprises the steps:

[0060] (1) Preparation of Fe 3 o 4 : Take 1.05g of FeCl 3 ·6H 2 O was dispersed in 40 mL of ethylene glycol and stirred until completely dissolved to become a homogeneous clear solution, followed by the addition of 1.7 g of NaAc and 0.6 g of polyethylene glycol. The mixed solution was vigorously stirred for 15 min, then transferred to a 100 mL polytetrafluoroethylene-backed reaction kettle, heated at 160 °C for 4 h, taken out, and naturally cooled to room temperature. Recycling and Separation of Black Fe Using Magnets 3 o 4 The product was washed several times with twice distilled water and absolute ethanol, and dried under vacuum at 50°C for 10 h;

[0061] (2) Fe 3 o 4 Modification: Weigh 0.15g of prepared Fe 3 o 4 Add magnetic nanoparticles to 40mL ethanol solution of MAA with a concentration of 0.15mM. After shaking for 16h, the black product is recovered with a magnet an...

Embodiment 2

[0066] a kind of Fe 3 o 4 The synthetic method of / ZnO nanocomposite, comprises the steps:

[0067] (1) Preparation of Fe 3 o 4 : Take 1.65g of FeCl 3 ·6H 2 O was dispersed in 30 mL of ethylene glycol, stirred until completely dissolved into a homogeneous clear solution, then 2.8 g of NaAc and 0.7 g of polyethylene glycol were added. The mixed solution was vigorously stirred for 20 min, then transferred to a 50 mL polytetrafluoroethylene-based reaction kettle, heated at 150 °C for 3 h, taken out, and cooled to room temperature naturally. Recycling and Separation of Black Fe Using Magnets 3 o 4 The product was washed several times with double distilled water and absolute ethanol, and dried in vacuum at 70°C for 6h;

[0068] (2) Fe 3 o 4 Modification: Weigh 0.2g of prepared Fe 3 o 4 Magnetic nanoparticles were added to 30mL of 0.18mM polyvinylpyrrolidone (PVP) ethanol solution, and after shaking for 15 hours, the black product was recovered with a magnet and washed th...

Embodiment 3

[0071] a kind of Fe 3 o 4 The synthetic method of / ZnO nanocomposite, comprises the steps:

[0072] (1) Preparation of Fe 3 o 4 : Take 1.95g of FeCl 3 ·6H 2 O was dispersed in 40 mL of ethylene glycol and stirred until completely dissolved to form a homogeneous clear solution, followed by the addition of 1.8 g of NaAc and 1.7 g of polyethylene glycol. The mixed solution was vigorously stirred for 25 min, then transferred to a 100 mL polytetrafluoroethylene-backed reactor, heated at 160 °C for 4 h, taken out, and cooled to room temperature naturally. Recycling and Separation of Black Fe Using Magnets 3 o 4 The product was washed several times with double distilled water and absolute ethanol, and dried in vacuum at 80°C for 5h;

[0073] (2) Fe 3 o 4 Modification: Weigh 0.3g of prepared Fe 3 o 4 Magnetic nanoparticles were added to 60 mL of 0.18 mM Tween 80 ethanol solution, and after 18 hours of shaking reaction, the black product was recovered with a magnet, and wash...

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Abstract

a Fe 3 O 4 / ZnO nanocomposite and its synthesis method, the synthesis method includes the following steps: (1) preparing Fe 3 O 4 Magnetic nanoparticles: preparation of Fe by heating soluble salts of iron with NaAc and polyethylene glycol in ethylene glycol 3 O 4 Magnetic nanoparticles; (2) Fe 3 O 4 Modification of: the Fe prepared in step (1) 3 O 4 The modified product is obtained by reacting the magnetic nanoparticles in the ethanol solution of the modifier; (3) Preparation of Fe 3 O 4 / ZnO: Fe is prepared by ultrasonically reacting the product obtained in step (2) with a soluble salt of zinc and an appropriate amount of ammonia in water 3 O 4 / ZnO nanocomposite. The invention utilizes a mild method to synthesize the desired product, has low cost and is easy to form large-scale production.

Description

technical field [0001] The invention belongs to the technical field of synthesis of nanocomposite materials, in particular to a Fe 3 o 4 / ZnO nanocomposite and its synthesis method. Background technique [0002] With the rapid development of industrialization, the problem of water and soil pollution caused by organic dyes in industrial wastewater has become more and more serious, and most organic dyes are difficult to degrade. Photocatalysis of semiconductor materials can effectively decompose organic dyes into H 2 O and CO 2 As a green catalytic degradation method, it has been widely used to degrade organic pollutants in water and atmosphere. The semiconductor materials currently used for photocatalysis mainly include TiO 2 , CdS and WO 3 and other n-type semiconductor compounds. Compared with other common semiconductor materials, TiO 2 The catalyst has strong redox ability, but its photogenerated electrons and holes are easy to recombine, and the quantum efficiency...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/80B01J37/08B01J37/34B82Y30/00B82Y40/00
CPCB01J23/002B01J23/80B01J37/088B01J37/343B82Y30/00B82Y40/00
Inventor 杨永梅李瑞峰郑春梅张顺虎
Owner HUANGSHAN UNIV
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