Magnetic photocatalysis nanometer composite material using bismuth oxide and nickel ferrite and preparation method thereof

A technology of nanocomposite materials and photocatalytic materials, which is applied in the field of magnetic photocatalytic nanocomposite materials and their preparation, can solve the problems of limited application and large energy gap, and achieve the effects of recycling, expanding the scope of application and reducing costs

Inactive Publication Date: 2017-05-31
NANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, titania has a large energy gap (~3.2eV) and only exhibits photocatal

Method used

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Examples

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Embodiment 1

[0016] In Example 1 of the present invention, a method for preparing a magnetic photocatalytic nanocomposite material using bismuth oxide and nickel ferrite comprises the following steps:

[0017] 1) For the preparation of ferroferric oxide, iron salt, stabilizer and reducing agent are added to the alcohol solvent according to the mass ratio of 1:0.2:1, and after complete dissolution, a solution with an iron ion concentration of 0.04M is obtained; the obtained solution is transferred to In the high-pressure reactor, after reacting at a temperature of 180°C for 8 hours, a black product was obtained, and the black product was fully washed with deionized water and absolute ethanol respectively, and after drying, finally obtained ferric oxide nanoparticles ;

[0018] 2) To prepare nickel ferrite, fully dissolve nickel nitrate and ferric nitrate in deionized water in proportion, adjust the pH to 13 with alkaline solution a to obtain mixed solution A; transfer mixed solution A to th...

Embodiment 2

[0022] In Example 2 of the present invention, a method for preparing a magnetic photocatalytic nano-composite material using bismuth oxide and nickel ferrite comprises the following steps:

[0023] 1) For the preparation of ferric oxide, iron salt, stabilizer and reducing agent are added to the alcohol solvent according to the mass ratio of 1:0.55:2, and after complete dissolution, a solution with an iron ion concentration of 0.12M is obtained; the obtained solution is transferred to In the high-pressure reactor, after reacting at a temperature of 200°C for 9 hours, a black product was obtained, and the black product was fully washed with deionized water and absolute ethanol respectively, and after drying, finally obtained ferric oxide nanoparticles ;

[0024] 2) To prepare nickel ferrite, fully dissolve nickel nitrate and ferric nitrate in deionized water in proportion, adjust the pH to 13.5 with alkaline solution a to obtain mixed solution A; transfer mixed solution A to the...

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Abstract

The invention discloses a magnetic photocatalysis nanometer composite material using bismuth oxide and nickel ferrite and a preparation method thereof. The magnetic photocatalysis nanometer composite material using bismuth oxide and nickel ferrite is mainly prepared from bismuth oxide, nickel ferrite and ferroferric oxide; the bismuth oxide is nanometer powder; the nickel ferrite is nanometer powder; the ferroferric oxide is nanometer powder. The prepared magnetic photocatalysis nanometer composite material using bismuth oxide and nickel ferrite can be recovered in the external magnetic field; the circulation utilization of a catalyst is realized; the cost is reduced; due to the existence is silver, the catalytic degradation of the organic contaminants under the visible light excitation is realized; the application range of the photocatalysis composite material is expanded; meanwhile, the heterojunction is formed through the combination of bismuth oxide and nickel ferrite; the light energy utilization interval is expanded to the visible light region; a matched energy zone structure is favorable for the separation of photo-induced electrons and electron holes; the photocatalysis degradation efficiency is further improved.

Description

technical field [0001] The invention relates to a magnetic photocatalytic nano composite material using bismuth oxide and nickel ferrite, in particular to a magnetic photocatalytic nano composite material using bismuth oxide and nickel ferrite and a preparation method thereof. Background technique [0002] Semiconductor-based photocatalysts have been widely used in the environmental field due to their excellent properties. Because titanium dioxide is non-toxic, chemically stable and cheap, it is considered as an ideal photocatalytic semiconductor material and has attracted extensive attention from researchers. However, titania has a large energy gap (~3.2eV) and only exhibits photocatalytic activity in the ultraviolet band, which severely limits its application. The realization of TiO2 photocatalysis under visible light excitation has thus become a research hotspot. Methods including compounding with noble metal particles (such as silver, gold, platinum) have been proposed...

Claims

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Application Information

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IPC IPC(8): B01J23/843
CPCB01J23/002B01J23/8437B01J35/004B01J2523/00B01J2523/54B01J2523/842B01J2523/847
Inventor 王爱华盛智铭程艺苑赵庆怀姬晓旭
Owner NANYANG NORMAL UNIV
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