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Cu-MOF, modified Cu-MOF adsorption material and preparation method thereof

An adsorption material and modification technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of small specific surface area of ​​MOF materials and poor heavy metal ion adsorption effect, and achieve excellent heavy metal ion adsorption. Performance, high specific surface area, the effect of expanding specific surface area

Active Publication Date: 2020-11-27
GUILIN UNIVERSITY OF TECHNOLOGY +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problems of MOF materials with small specific surface area and poor adsorption effect on heavy metal ions in the prior art, to provide a Cu-MOF and its modified adsorption material and preparation method, through the doping of MOF with specific ion solution , in order to achieve a better adsorption effect of heavy metal ions

Method used

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  • Cu-MOF, modified Cu-MOF adsorption material and preparation method thereof
  • Cu-MOF, modified Cu-MOF adsorption material and preparation method thereof
  • Cu-MOF, modified Cu-MOF adsorption material and preparation method thereof

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Embodiment 1

[0039]This embodiment provides a method for preparing a Cu-MOF material, specifically:

[0040] Weigh 0.20g of 5-bromosalicylaldehyde acetal 4-amino-1,2,4-triazole ligand and 0.16g of copper nitrate trihydrate, place in a 20mL micro-reaction bottle, add 5mL DMF and 4mL secondary Stir with distilled water for 10 min, tighten the cap of the reaction bottle and place it in an oven at 80°C for 24 h to obtain dark green needle crystals, which are filtered, washed with distilled water, and dried to obtain the Cu-MOF.

[0041] This embodiment also provides a Cu-MOF prepared by the above-mentioned preparation method. The pore size of the Cu-MOF is about 11.93 nm, which is calculated by detecting its XRD pattern.

[0042] This example provides a method for preparing a modified Cu-MOF adsorption material, specifically:

[0043] Add 30.00 mL of 0.4 mol / L ferrous sulfate solution and 150 mL of 0.06 mol / L ferrous sulfate solution into the beaker containing 15.00 g of the Cu-MOF, stir at 5...

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Abstract

The invention mainly belongs to the technical field of metal organic framework materials, and discloses Cu-MOF, a modified Cu-MOF adsorption material and a preparation method thereof. The preparationmethod of the modified Cu-MOF comprises the following steps of: putting Cu-MOF into a solution containing Fe <3+> and Fe <2+>; and modifying the Cu-MOF to obtain the modified Cu-MOF of which the specific surface area is greater than or equal to 150.85 m <2> / g. The maximum As (III) adsorption capacity of the modified Cu-MOF prepared by the method is 66.12 mg / g, and the modified Cu-MOF shows excellent heavy metal ion adsorption performance.

Description

technical field [0001] The present invention mainly relates to the technical field of metal-organic framework materials, and in particular relates to a Cu-MOF and its modified adsorption material and preparation method. Background technique [0002] Heavy metal pollution is an unavoidable environmental problem in the current industrial development process. Heavy metals are not biodegradable and bioaccumulative. Even at low concentrations, they are highly toxic and have irreversible harm to the ecological environment. Japan's Minamata disease incident, bone disease incident, and Shimen arsenic pollution incident all sounded the alarm for us. [0003] Metal-organic framework (MOF) is an emerging heavy metal ion adsorption material. Since Kitagawa's research group first reported the adsorption properties of MOF materials in 1997, a large number of coordination polymers have been used as porous adsorption materials. Due to the different surface structures of MOFs, their ability...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/226B01J20/28061C02F1/285C02F2101/20
Inventor 张淑华陈钊张子龙肖瑜李光照
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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