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Preparation method of ZnFe2O4 nanoparticles used for air purifier

An air purifier and nanoparticle technology, which is applied in the field of preparation of ZnFe2O4 nanoparticles for air purifiers, can solve the problems of low photocatalytic activity and the like, and achieve the effects of simple and easy operation, low cost and good photocatalytic performance of the preparation method.

Inactive Publication Date: 2019-06-11
天津发洋环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently for ZnFe 2 o 4 The researches mainly focus on the application of photocatalytic hydrolysis, but there are relatively few reports on its photocatalytic activity.
And for ZnFe 2 o 4 The photocatalytic activity of powder is rarely reported in detail in domestic literature

Method used

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  • Preparation method of ZnFe2O4 nanoparticles used for air purifier

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Experimental program
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Effect test

Embodiment 1

[0025] FeCl 3 / Fe 2 (SO4) 3 Dissolve in 50ml deionized water at a molar ratio of 1:1, Fe + The concentration is 0.5mol L -1 ; Add 1mol·L drop by drop -1 NaOH solution, and observe the Tyndall effect of the solution until the reddish-brown transparent Fe(OH) 3 Hydrosol.

[0026] In the configured Fe(OH) 3 Add 0.5mol·L to the hydrosol -1 Sodium dodecylbenzenesulfonate (ABS) solution to make the sol coagulate. After washing the precipitate, place it for 30d. Then, it was dried under nitrogen atmosphere at 50 °C to obtain uniformly dispersed FeOOH nanoparticles.

[0027] Place the obtained FeOOH powder in 0.1mol L -1 Soak in diethyl zinc solution for 30min; repeat the soaking process 5 times to deposit the ZnO layer on the surface of FeOOH. Finally, the soaked FeOOH / ZnO powder was put into a muffle furnace and annealed at 520 °C for 3 hours.

[0028] Calcined powder at 0.05mol L -1 Soak in KOH solution for 5 minutes to remove excess ZnO and finally get pure ZnFe 2 o...

Embodiment 2

[0030] FeCl 3 / Fe 2 (SO4) 3 Dissolve in 50ml deionized water at a molar ratio of 1:2, Fe + The concentration is 0.5mol L -1 ; Add 1mol·L drop by drop -1 NaOH solution, and observe the Tyndall effect of the solution until the reddish-brown transparent Fe(OH) 3 Hydrosol.

[0031] In the configured Fe(OH) 3 Add 0.5mol·L to the hydrosol -1 Sodium dodecylbenzenesulfonate (ABS) solution to make the sol coagulate. After washing the precipitate, place it for 30d. Then, it was dried under nitrogen atmosphere at 200 °C to obtain uniformly dispersed FeOOH nanoparticles.

[0032] Place the FeOOH powder prepared in (2) in 0.1mol L -1 Soak in diethyl zinc solution for 30min; repeat the soaking process 5 times to deposit the ZnO layer on the surface of FeOOH. Finally, the soaked FeOOH / ZnO powder was put into a muffle furnace and annealed at 520°C for 3 hours.

[0033] Calcined powder at 0.05mol L -1 Soak in KOH solution for 5 minutes to remove excess ZnO and finally get pure Zn...

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Abstract

The invention discloses a preparation method of ZnFe2O4 nanoparticles used for an air purifier. The method comprises the following steps: firstly preparing a Fe(OH)3 hydrosol; adding a sodium dodecylbenzenesulfonate (ABS) solution to coagulate the sol, performing washing, and performing drying to obtain dispersed FeOOH nanoparticles; depositing a ZnO layer on the surface of FeOOH, and performing annealing treatment; and performing treatment in an alkaline solution to remove excess ZnO, and finally obtaining the pure ZnFe2O powder. The method for preparing the ZnFe2O4 nanoparticles provided bythe invention is simple and easy to operate, and has practical feasibility and industrial application prospects; and the prepared ZnFe2O4 nanoparticles have low costs and no pollution.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a ZnFe for air purifier 2 o 4 Preparation method of nanoparticles. Background technique [0002] With the increasingly prominent environmental problems, how to maintain good air quality is a severe challenge for human society in the 21st century. The development of nanotechnology has opened up new ways for people to develop high-efficiency, energy-saving and environmentally friendly materials and technologies for pollution prevention and control. Environmental nanotechnology is a technology that uses nanoscale materials and substances with nanostructures (such as nanolayers and nanotubes) for environmental pollution control and remediation. A technology in the field of engineering) has received much attention in recent years. From the perspective of environmental protection, develop and utilize solar photochemical reactions to degrade environmentally ...

Claims

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Application Information

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IPC IPC(8): C01G49/00B82Y40/00B01D53/86
Inventor 杨立新
Owner 天津发洋环保科技有限公司
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