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Preparation method of photocatalytically degraded magnetic graphene oxide composite material

A technology of composite materials and stone oxide, which is applied in the field of preparation of magnetic graphene oxide composite materials, can solve the problems of small specific surface area, small photocatalytic effect, and poor surface effect of magnetic materials, so as to increase specific surface area and enhance affinity Degree, the effect of enhancing dispersion

Inactive Publication Date: 2018-06-29
BEIJING EURO & AMERICAN INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface effect of magnetic materials is not good, and the specific surface area is small, so it cannot effectively adsorb TiO 2 , so that its photocatalytic effect is small

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of a photocatalytically degraded magnetic graphene oxide composite material, comprising the following steps:

[0022] Step 1, preparation of graphene oxide dispersion

[0023] Add 0.1g of graphene oxide into 50mL of ethanol and ultrasonically oscillate for 1-2 hours, then add 20mL of hydrochloric acid and 10 mL of deionized water to continue ultrasonically oscillating for 1h to make a 2mg / mL GO solution, namely graphene oxide solution;

[0024] Step 2. Preparation of magnetic core wrapped with graphene oxide

[0025] Add the magnetic core substance to the GO solution prepared in step 1, add EDA reducing agent, seal the container containing the solution, and vibrate mechanically for 3 minutes to avoid the increase in viscosity after adding EDA and avoid the flocculation of the mixed solution, and then perform magnetic Stir to make the graphene oxide wrap on the magnetic core to form a magnetic core graphene oxide solution;

[0026] Step 3. Disperse...

Embodiment 2

[0032] A preparation method of a photocatalytically degraded magnetic graphene oxide composite material, comprising the following steps:

[0033] Step 1, preparation of graphene oxide dispersion

[0034] Add 0.2g of graphene oxide into 50mL of ethanol and ultrasonically oscillate for 2 hours, then add 20mL of hydrochloric acid and 10 mL of deionized water to continue ultrasonically oscillating for 2h to make a 4mg / mL GO solution, namely graphene oxide solution;

[0035] Step 2. Preparation of magnetic core wrapped with graphene oxide

[0036] Add the magnetic core substance to the GO solution prepared in step 1, add EDA reducing agent, seal the container containing the solution, and vibrate mechanically for 5 minutes to avoid the increase in viscosity after adding EDA and avoid flocculation of the mixed solution, and then perform magnetic Stir to make the graphene oxide wrap on the magnetic core to form a magnetic core graphene oxide solution;

[0037]Step 3. Disperse and ad...

Embodiment 3

[0039] A preparation method of a photocatalytically degraded magnetic graphene oxide composite material, comprising the following steps:

[0040] Step 1, preparation of graphene oxide dispersion

[0041] Add 0.15g of graphene oxide into 50mL of ethanol and ultrasonically oscillate for 1.5 hours, then add 20mL of hydrochloric acid and 10 mL of deionized water to continue ultrasonically oscillating for 1.5h to make a 3mg / mL GO solution, namely graphene oxide solution;

[0042] Step 2. Preparation of magnetic core wrapped with graphene oxide

[0043] Add the magnetic core substance to the GO solution prepared in step 1, add EDA reducing agent, seal the container containing the solution, and vibrate mechanically for 4 minutes to avoid the increase in viscosity after adding EDA and avoid the flocculation of the mixed solution, and then perform magnetic Stir to make the graphene oxide wrap on the magnetic core to form a magnetic core graphene oxide solution;

[0044] Step 3. Dispe...

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PUM

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Abstract

The invention relates to a preparation method of a photocatalytically degraded magnetic graphene oxide composite material. The method comprises the following steps: preparing graphene oxide dispersionliquid, preparing a magnetic core wrapped with graphene oxide, and enabling a catalyst to be absorbed on a graphene oxide layer in a dispersed way so as to prepare the magnetic graphene oxide composite material with different catalyst contents. The magnetic core is externally wrapped with graphene oxide sheets, so that the specific surface area of the magnetic material is effectively enlarged; byutilizing the attraction between magnet and the magnetic core, the photocatalyst as well as hydroxides and hydroxyl groups on the graphene oxide can be effectively recovered, so that the affinity with water can be effectively enhanced, the dispersibility of the catalyst body in water is enhanced, and the catalysis is facilitated to be effectively carried out.

Description

technical field [0001] The invention relates to the technical field of photocatalysis, in particular to a method for preparing a photocatalytically degraded magnetic graphene oxide composite material. Background technique [0002] Photocatalytic pollutant degradation technology uses semiconductor photocatalysts to treat pollutants in various types of wastewater. Photocatalysts have strong oxidative properties, and can effectively photocatalyze dyes, surfactants, organic halides and other difficult-to-degrade substances. reaction, and has a good degradation effect, and achieves complete mineralization after continuous reaction, so it is of great significance in degrading refractory organic pollution. [0003] Semiconductors with multiple photocatalytic properties include WO 3 、TiO 2 , CdS, ZnO, Fe 2 o 3 , CdSe, Bi, etc., where due to TiO 2 It has the advantages of chemical and photocorrosion resistance, stable properties, five poisons, high catalytic activity, and low pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J23/80B01J35/00B01J35/10
CPCB01J23/745B01J23/80B01J35/33B01J35/61B01J35/39
Inventor 车春玲
Owner BEIJING EURO & AMERICAN INST OF SCI & TECH