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A kind of cu-btc MOF carbonized porous material and its preparation method and application

A technology of porous material and carbonization process, applied in the field of nanomaterials, to achieve the effects of high safety, low pollution and simple preparation method

Active Publication Date: 2022-03-29
INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no better material that can meet the above requirements, and the removal or degradation of mycotoxins in vegetable oils still needs to be solved and studied

Method used

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  • A kind of cu-btc MOF carbonized porous material and its preparation method and application
  • A kind of cu-btc MOF carbonized porous material and its preparation method and application
  • A kind of cu-btc MOF carbonized porous material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1 Preparation of Cu-BTC MOF carbonized porous material

[0050] A certain amount of Cu-BTC MOF material was ground into a uniform blue powder, baked at 105°C for 12h, then taken out and cooled to room temperature. A certain amount of baked Cu-BTC MOF material was poured into a corundum crucible, and then three temperature gradient conditions (400°C, 600°C, 800°C) were set. The amount of material used for each temperature gradient was 10g. 2 Under protection, the heating rate is 1°C / min, and the annealing time is 3h. After the tube furnace is cooled to room temperature, the calcined material is taken out and ground evenly, and then washed with concentrated hydrochloric acid. The dosage is 0.5L each time. Overnight, pour off the supernatant, repeat this process until the supernatant is colorless and transparent, take a small amount of supernatant and use 1mg / mL sodium hydroxide solution to verify whether the copper ions are washed clean, after the pickling, contin...

Embodiment 2

[0054] Example 2 Cu-BTC MOF and Cu-BTC MOF carbonized materials have an effect on AFB in 0.05% methanol aqueous solution 1 Compared with the adsorption effect

[0055] Prepare a certain number of centrifuge tubes, and add 10ml of AFB with a concentration of 100ng / ml to each tube 1 Working solution, accurately weigh 10 mg of Cu-BTC MOF and the three kinds of Cu-BTC MOF carbonized materials prepared in Example 1 and place them in centrifuge tubes with standard solutions, vortex for 10 seconds, and place the centrifuge tubes at room temperature in the dark. Place on a shaking table for adsorption treatment, wherein the rotating speed of the shaking table is 250rpm, and the adsorption time is 24h. After centrifugation, take 1 mL of the supernatant to pass through a 0.22 μm organic membrane, and then use HPLC to detect the aflatoxin content in the supernatant; at the same time, do a set of blank control treatment (CK, that is, without adding Cu-BTC MOF or C-Cu-BTC MOF material , ...

Embodiment 3

[0057] Example 3 Effect of Cu-BTC MOF carbonized porous material on AFB in 0.05% methanol aqueous solution 1 The adsorption properties of

[0058] 1) Effect of different adsorption times on Cu-BTC MOF carbonized porous material on AFB in 0.05% methanol aqueous solution 1 The influence of the adsorption performance

[0059] Weigh 30mg of C-Cu-BTC MOF-400, C-Cu-BTC MOF-600, and C-Cu-BTC MOF-800 respectively, and place them in 100mL of AFB with a concentration of 5μg / mL 1 0.05% methanol aqueous solution (250mL beaker), vortexed for 10s and carried out magnetic stirring adsorption at room temperature and dark conditions, the rotation speed was 250rpm, and the adsorption times were 0, 5, 10, 15, 20, 25, 30, 35, 40, 50, 60, 90, 120, 150, 180, 240, 360, 480, 720, 840, 1440min, take 1mL of the supernatant to pass through the 0.22μm organic film twice at the above time, and then use the GB 5009.22-2016 method to detect yellow Aspergillus toxin, for result verification, the result is...

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Abstract

The invention relates to a Cu-BTC MOF carbonized porous material and its preparation method and application. The preparation method of Cu-BTC MOF carbonized porous material includes calcining and carbonizing Cu-BTC MOF; the temperature of the calcining and carbonization is 400-800°C, and the temperature of the calcining and carbonization is raised to a specified temperature at 1-3°C per minute, and then kept for 3h ; Then use concentrated hydrochloric acid to remove copper ions, wash with water until the material is neutral, and dry at 100°C. In the present invention, the Cu-BTC MOF material is carbonized, which can significantly enhance the resistance of the material to aflatoxin B. 1 affinity. Using the Cu-BTC MOF carbonized porous material of the present invention to adsorb aflatoxin in vegetable oil has the advantages of simple operation, large adsorption capacity, fast adsorption speed, etc.; small pollution, high safety, and almost no damage to the nutritional index of vegetable oil after adsorption. impact and no cytotoxicity, has certain application prospects.

Description

technical field [0001] The invention relates to nanometer materials, in particular to a Cu-BTC MOF carbonized porous material and its preparation method and application. Background technique [0002] Aflatoxin is a secondary metabolite produced by mold or parasitic Aspergillus, and it is the most toxic class of mycotoxins found so far. It not only has strong liver toxicity and carcinogenicity, but also has adverse effects on the digestive function and immune system of poultry, resulting in growth retardation, reduced feed conversion rate, decreased immunity, reduced reproductive capacity, and damage to solid organs. Common aflatoxins are mainly AFB 1 、AFB 2 、AFG 1 、AFG 2 、AFM 1 、AFM 2 , the most toxic and most likely to produce is AFB 1 . Vegetable oil is made from oil crops through a series of processing processes. It is an indispensable food in people's daily life and can provide humans with essential fatty acids and other nutrients, such as polyphenols and phytost...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C11B3/10A23D9/04
Inventor 喻理李培武马飞毛劲张良晓
Owner INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
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