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Mesoporous composite material prepared by adopting one-pot method with adsorption and catalytic degradation activities

A composite material and mesoporous technology, which is applied in the direction of organic compound/hydride/coordination complex catalyst, alkali metal compound, adsorbed water/sewage treatment, etc., can solve the problem of loss of nano-titanium dioxide, and achieve wide application value, good The effect of adsorption and degradation effects

Inactive Publication Date: 2017-12-29
TIANJIN POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the extremely small particle size, nano-titanium dioxide is easily lost during the oxidation process. Therefore, it is more conducive to wide application in actual production to find a carrier that can immobilize nano-titanium dioxide and combine adsorption and oxidative decomposition.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0014] The MIL-101 mesoporous adsorption material was prepared by stirring at room temperature, and the nano-titanium dioxide was coated on the surface of the MIL-53 adsorption material by the "one-pot method". Hole Composite:

[0015] TiO 2 -The synthesis method of MIL-101 composite material is: dissolve 0.325 grams of chromium nitrate and 0.410 grams of terephthalic acid in 20 milliliters of DMF, add 1 milliliter of hydrofluoric acid solution, and ultrasonically dissolve it for 10 minutes. In a 50 ml single-necked round bottom flask, react for 2 hours. Subsequently, 25 ml of butyl titanate was added to the reaction solution and stirred at room temperature for 2 hours. After the reaction, centrifuge to obtain a green solid.

[0016] TiO 2 - Activation method of the MIL-101 composite material: the above green solid was washed several times with ethanol, and the solid was dried in an oven at 60° C., and then activated in an oven at 200° C. for 3 hours.

[0017] TiO 2 - Ho...

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PUM

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Abstract

The invention relates to a novel method for preparing and applying a mesoporous composite material with adsorption and catalytic degradation activities. The method comprises the following steps: preparing an MIL-101 mesoporous adsorption material by a room-temperature stirring method, adding butyl titanate into a reacting solution, stirring for hours to finally prepare the mesoporous TiO2-MIL-101 composite material with adsorption and catalytic degradation activities. The method is simple in process and easy to operate. Adsorption and degradation experiments indicate that the composite material prepared by the method has a regular structure and high porous capacity, and has an excellent degradation effect for organic matters. In the method, the addition proportion of TiO2 and MIL-101 does not have limitation, and cladding in an arbitrary proportion can be adopted according to research requirement or actual application requirement.

Description

technical field [0001] The invention relates to a mesoporous composite material with adsorption and catalytic degradation activity, which is coated titanium dioxide (TiO 2 ) nanocrystalline mesoporous MIL-101 particles, synthesize MIL-101 particles by stirring at room temperature, and at the same time use the "one-pot method" to coat the surface with nano-titanium dioxide shells, and finally obtain a new type of mesoporous composite material, and develop A fast and simple new method for the adsorption and degradation of organic matter. Background technique [0002] MIL-101 is a kind of rigid skeleton mesoporous adsorption material with a special cage structure formed by self-assembly of metal ions and organic ligands. MIL-101 not only has a regular pore structure, good thermal stability and solvent stability, but its biggest feature is its mesoporous cage structure and super large specific surface area (BET specific surface area up to 4500m 2 / g), therefore, MIL-101 has be...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F1/72B01J31/38C02F101/30
CPCB01J20/22B01J20/28054B01J31/2213B01J31/38B01J2531/62C02F1/285C02F1/725C02F2101/30
Inventor 常娜张浩师梦闪李佳尹晨佳李腾飞
Owner TIANJIN POLYTECHNIC UNIV
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