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Preparation method of TiO2/ZnFe2O4/active carbon composite material

A composite material, znfe2o4 technology, applied in the field of TiO2/ZnFe2O4/activated carbon (AC) composite material preparation, can solve problems such as preparation difficulties, and achieve the effect of improving photocatalytic degradation effect, promoting mineralization, and good visible light responsiveness

Inactive Publication Date: 2015-06-24
彭晓领
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Combining materials with photodegradation catalytic activity with AC can achieve the above goals, but how to realize the preparation of separable and "self-cleaning" AC composites has become one of the difficulties

Method used

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  • Preparation method of TiO2/ZnFe2O4/active carbon composite material
  • Preparation method of TiO2/ZnFe2O4/active carbon composite material
  • Preparation method of TiO2/ZnFe2O4/active carbon composite material

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specific Embodiment approach 1

[0015] Specific embodiment 1: 3 mmol ZnCl 2 , 6 mmol FeCl 3 Add 6H2O and 1.8g AC to 70 ml of ethylene glycol, stir evenly with magnetic force, add 7.94 g of anhydrous sodium acetate, stir well, put it into a polytetrafluoroethylene-lined autoclave, and put it into a constant temperature drum Insulated in an air drying oven at 190 °C for 14 h. After cooling, use magnetic separation to separate the black product, wash it with deionized water and absolute ethanol until it is neutral, and then dry it at 80°C for 6 hours to obtain ZnFe 2 o 4 / AC Composite. Sol-Gel Synthesis of TiO 2 / ZnFe 2 o 4 / AC composite material: under stirring, 1 ml of butyl titanate was added dropwise into 20 ml of absolute ethanol to prepare solution A. Mix 1 ml of anhydrous acetic acid, 1 ml of deionized water and 10 ml of absolute ethanol to prepare solution B. Under the condition of stirring, add solution B dropwise to solution A, after stirring for 1 h to obtain a transparent and clear sol, add...

specific Embodiment approach 2

[0016] Specific embodiment 2: 3 mmol ZnCl 2 , 6 mmol FeCl 3Add 6H2O and 1.8g AC to 70 ml of ethylene glycol, stir evenly with a magnetic force, add 7.94 g of anhydrous sodium acetate, stir well, put it into a polytetrafluoroethylene-lined autoclave, and put it into a constant temperature drum Insulated in an air drying oven at 160 °C for 20 h. After cooling, use magnetic separation to separate the black product, wash it with deionized water and absolute ethanol until it is neutral, and then dry it at 80°C for 8 hours to obtain ZnFe 2 o 4 / AC Composite. Sol-Gel Synthesis of TiO 2 / ZnFe 2 o 4 / AC composite material: under stirring, add 2 ml of butyl titanate dropwise into 20 ml of absolute ethanol to prepare solution A. Mix 1 ml of anhydrous acetic acid, 1 ml of deionized water and 10 ml of absolute ethanol to prepare solution B. Under the condition of stirring, add solution B dropwise to solution A, after stirring for 1 h to obtain a transparent and clear sol, add 1 g o...

specific Embodiment approach 3

[0017] Specific embodiment 3: 3 mmol ZnCl 2 , 6 mmol FeCl 3 Add 6H2O and 1.8g AC to 70 ml of ethylene glycol, stir evenly with a magnetic force, add 7.94 g of anhydrous sodium acetate, stir well, put it into a polytetrafluoroethylene-lined autoclave, and put it into a constant temperature drum Incubate at 220 °C for 8 h in an air drying oven. After cooling, use the magnetic separation method to separate the black product, wash it with deionized water and absolute ethanol until it is neutral, and then dry it at 80°C for 10 hours to obtain ZnFe 2 o 4 / AC Composite. Sol-Gel Synthesis of TiO 2 / ZnFe 2 o 4 / AC composite material: under the condition of stirring, 3 ml of butyl titanate was added dropwise into 20 ml of absolute ethanol to prepare solution A. Mix 1 ml of anhydrous acetic acid, 1 ml of deionized water and 10 ml of absolute ethanol to prepare solution B. Under the condition of stirring, add solution B dropwise to solution A, after stirring for 1 h to obtain a tr...

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Abstract

The invention relates to a preparation method of a TiO2 / ZnFe2O4 / active carbon (AC) composite material. The preparation method comprises the following steps: firstly, synthesizing a ZnFe2O4 / AC composite material by using a hydrothermal method; and further synthesizing the TiO2 / ZnFe2O4 / AC composite material by using a sol-gel method. The composite material has the characteristics of being relatively large in specific surface area, good in magnetic response and photocatalytic property. The composite material prepared by the invention can be applied to adsorbing organic dyes in sewage and has the advantages that firstly, the specific surface area is large and the adsorption capability on organic matters such as dyes in sewage is strong; secondly, ZnFe2O4 nano particles not only can provide good magnetic response for magnetic separation, but also has good visible light responsiveness, so that the photocatalytic property of the composite material is improved; thirdly, TiO2 nanoparticles have the property of photocatalytically degrading organic matters and are regenerated and used under illumination; and fourthly, the composite material can be recycled, so that the sewage treatment cost is lowered and the resources are saved.

Description

technical field [0001] The present invention relates to a kind of TiO 2 / ZnFe 2 o 4 / Activated carbon (AC) composite material preparation method, which can be applied to the adsorption and degradation of liquid phase organic matter in wastewater. Background technique [0002] At present, organic pollution such as dyes in sewage is always threatening human health. Textile mills, paper mills, plastic products and other factories often dye their products, resulting in a large amount of dye wastewater. According to statistics, at least 100,000 commercial dyes are used every year, which can generate more than 70,000 tons of dye wastewater . Physical adsorption is considered to be a simple, effective, environmentally friendly and economical method to remove dyes in wastewater, and the adsorbent can be obtained from some economical materials through a simple method. As a typical adsorption material, the specific surface area of ​​AC can be as high as 1000 m 2 g -1 As above, ...

Claims

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Application Information

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IPC IPC(8): B01J20/06B01J20/30C02F1/28C02F1/30B01J23/80
Inventor 王新庆王攀峰徐靖才金顶峰吴伟香彭晓领叶新军洪波金红晓葛洪良
Owner 彭晓领
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