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Preparation method of ferroferric oxide/chitosan/TiO2 nanocomposite photocatalysis material

A technology of ferroferric oxide and photocatalytic materials, which is applied in the field of environmental pollution control, can solve the problems of photocatalytic performance impact, difficult recovery, and smaller specific surface area, and achieve high practical value, easy operation, and high synthesis safety. Effect

Inactive Publication Date: 2012-01-18
HUBEI FORBON TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

TiO 2 On the one hand, although the loading of the catalyst solves the problem of its difficult recovery, on the other hand, its specific surface area becomes relatively smaller after loading, and the photocatalytic performance has a certain influence.

Method used

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  • Preparation method of ferroferric oxide/chitosan/TiO2 nanocomposite photocatalysis material
  • Preparation method of ferroferric oxide/chitosan/TiO2 nanocomposite photocatalysis material
  • Preparation method of ferroferric oxide/chitosan/TiO2 nanocomposite photocatalysis material

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Embodiment 1

[0025] 1) Preparation of nano-magnetic ferriferric oxide: adopt solvothermal reduction method, use ethylene glycol as reducing agent, carry out partial reduction to ferric ion, use sodium acetate, polyethylene glycol as surfactant and preventive agent respectively Agglomeration aid, preparation of Fe 3 o 4 nanoparticles. First take 20mL of ethylene glycol into the beaker, add 0.5418g FeCl successively 3 , 1.8g sodium acetate and 0.5g polyethylene glycol PEG, magnetically stirred at room temperature for 1h, until the solid was fully dissolved and uniform, and a dark brown-yellow viscous liquid was obtained; the liquid was transferred to a high-pressure reaction lined with 25ml polytetrafluoroethylene In the kettle, heat it up to 200°C in an electric oven, keep it warm for 12 hours, and then cool it down to room temperature naturally; after taking out the solution in the kettle, wash it with absolute ethanol for several times, then wash it with deionized water for several time...

Embodiment 2

[0029] 1) Preparation of nano-magnetic ferriferric oxide: adopt solvothermal reduction method, use ethylene glycol as reducing agent, carry out partial reduction to ferric ion, use sodium acetate, polyethylene glycol as surfactant and preventive agent respectively Agglomeration aid, preparation of Fe 3 o 4 nanoparticles. First take 25mL of ethylene glycol into the beaker, add 0.6012g of FeCl successively 3 , 2.0g sodium acetate and 0.7g polyethylene glycol PEG, magnetically stirred at room temperature for 1.5h, until the solid was fully dissolved and uniform, and a dark brown viscous liquid was obtained; the liquid was transferred to a 25ml polytetrafluoroethylene-lined high-pressure In the reaction kettle, heat it up to 180°C in an electric oven, keep it warm for 9 hours, and then cool it down to room temperature naturally; after taking out the solution in the kettle, wash it with absolute ethanol for several times, then wash it with deionized water for several times, and t...

Embodiment 3

[0033] 1) Preparation of nano-magnetic ferriferric oxide: adopt solvothermal reduction method, use ethylene glycol as reducing agent, carry out partial reduction to ferric ion, use sodium acetate, polyethylene glycol as surfactant and preventive agent respectively Agglomeration aid, preparation of Fe 3 o 4 nanoparticles. First take 40mL of ethylene glycol into the beaker, add 0.4500g of FeCl successively 3 , 1.6g sodium acetate and 0.6g polyethylene glycol PEG, magnetically stirred at room temperature for 0.5h, until the solids were fully dissolved and uniform, and a dark brown viscous liquid was obtained; the liquid was transferred to a 25ml polytetrafluoroethylene-lined high-pressure In the reaction kettle, heat it up to 250°C in an electric oven, keep it warm for 10 hours, and then cool it down to room temperature naturally; after taking out the solution in the kettle, wash it with absolute ethanol for several times, then wash it with deionized water for several times, an...

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Abstract

The invention discloses a preparation method of a ferroferric oxide / chitosan / TiO2 ternary nanocomposite photocatalysis material, belonging to the technical field of treatment of environmental pollution. The method comprises the following steps of: (1) synthesizing nano ferroferric oxide; (2) preparing a ferroferric oxide / chitosan composite carrier; and (3) preparing a ferroferric oxide / chitosan / TiO2 nanocomposite photocatalysis material. The ferroferric oxide / chitosan / TiO2 ternary nanocomposite photocatalysis material prepared with the method has the advantages of easiness and convenience foroperating, stable performance, high synthesis safety, environmental friendliness and the like, and has a very high practical value; a new prospect is opened up for the development of the TiO2 nanocomposite photocatalysis material; the photocatalysis material can be used for treating organic and inorganic waste water on the aspect of waste water treatment; and in the biological medicine field, thephotocatalysis material can be used for purifying and recovering proteins and releasing and targeting medicaments.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, and relates to a ferric oxide / chitosan / TiO 2 A method for preparing a ternary nanocomposite photocatalytic material. Background technique [0002] With the development of my country's industrial process, the discharge of industrial wastewater is increasing. Among these industrial wastewaters, dye wastewater has become the current industry due to its high COD, large chroma, complex components, high organic matter and salt content, high acidity (alkaline), rapid changes in water quality and quantity, and a large amount of teratogenic and carcinogenic substances. One of the most difficult pollutants to deal with, if these wastewaters are discharged directly, they will cause pollution to the soil and water sources in our country, seriously affecting the ecological environment. Therefore, the current research on dye wastewater treatment technology is attracting more and more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38C02F1/32C02F101/38
Inventor 何瑜王仁宗宋功武王惠沙淮丽
Owner HUBEI FORBON TECH
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