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A kind of preparation method and application of bimetallic mof based on mof-808

A MOF-808, bimetallic technology, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the problems of low adsorption capacity, poor reusability, etc., to achieve increased adsorption capacity, Excellent repeatability, adsorption capacity, and the effect of improved adsorption performance

Active Publication Date: 2021-11-02
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problems of low adsorption capacity and poor reusability of existing adsorption materials for trivalent antimony and pentavalent antimony, and provides a preparation method and application of a bimetallic MOF based on MOF-808

Method used

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  • A kind of preparation method and application of bimetallic mof based on mof-808
  • A kind of preparation method and application of bimetallic mof based on mof-808
  • A kind of preparation method and application of bimetallic mof based on mof-808

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specific Embodiment approach 1

[0027] Specific implementation mode 1: This implementation mode is a method for preparing a bimetallic MOF based on MOF-808, which is specifically carried out according to the following steps:

[0028] One, the ZrOCl 2 ·8H 2 O and FeCl 3 Dissolve in DMF together, oscillate ultrasonically for 15min~20min, then add trimesic acid, continue ultrasonically oscillating for 10min~15min, then transfer to the reaction kettle, add formic acid, keep warm in an oven at 130℃~150℃ for 48h~50h, cool Suction filtration after reaching room temperature, retain the filter cake;

[0029] The ZrOCl 2 ·8H 2 O and FeCl 3 The molar ratio is 1:(0.1~4);

[0030] The FeCl 3 The volume ratio of the amount of substance to DMF is (0.8mmol~6.4mmol): 60mL;

[0031] The trimesic acid and FeCl 3 The molar ratio is 1:(0.25~1.5);

[0032] The volume of described DMF and formic acid is identical;

[0033] 2. ①Immerse the filter cake in DMF and then soak for 4h~6h, and then filter with suction; then imm...

specific Embodiment approach 2

[0038] Embodiment 2: This embodiment differs from Embodiment 1 in that: in step 1, heat preservation in an oven at 130° C. for 48 hours, and suction filtration after cooling to room temperature to retain the filter cake. Others are the same as the first embodiment.

specific Embodiment approach 3

[0039] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: ZrOCl described in step one 2 ·8H 2 O and FeCl 3 The molar ratio is 4:1. Others are the same as those in Embodiment 1 or 2.

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Abstract

A method for preparing a bimetallic MOF based on MOF‑808 and its application, which belong to a method for preparing a bimetallic MOF and its application to removing trivalent antimonate and pentavalent antimonate in water. The invention aims to solve the technical problems of low adsorption capacity of trivalent antimony and pentavalent antimony and poor reusability of existing adsorption materials. The present invention provides based on the synthesis conditions of MOF-808, adding different proportions of iron ions to form an adsorption material through in-situ doping, and using it to adsorb and remove trivalent antimonate and pentavalent antimonate in water, and to trivalent antimonate and pentavalent antimonate The maximum adsorption capacity of pentavalent antimonate is 310mg / g and 524mg / g respectively. The material has excellent repeatability. After repeating the adsorption experiment four times, the removal rate of trivalent antimonate with an initial concentration of 100mg / L can still be as high as 90%, and the removal rate of pentavalent antimonate with an initial concentration of 100mg / L The rate can still be as high as 100%.

Description

technical field [0001] The invention belongs to a preparation method of bimetallic MOF and its application to removing trivalent antimonate and pentavalent antimonate in water. Background technique [0002] Heavy metal ions, as one of the common but diverse, complex and easily transferable serious pollution sources, are mainly caused by human factors such as mining, waste gas discharge, sewage irrigation and the use of products with heavy metals exceeding the standard. Due to human activities, the content of heavy metals in the environment increases, exceeding the normal range, directly endangering human health and deteriorating the quality of the environment. In order to solve this problem quickly and effectively, scientists in various fields are constantly expanding existing methods and seeking new and more efficient means of removal. Among the currently existing technical means, reverse osmosis, electrodeposition, precipitation / coagulation, membrane filtration, etc. are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00B01J20/22B01J20/30C02F1/28C02F101/20
CPCB01J20/226C02F1/285C02F2101/20C08G83/008
Inventor 罗旭彪孙百鹤任重张凯张栩境
Owner NANCHANG HANGKONG UNIVERSITY
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