Metal organic framework material as well as synthetic method and application thereof
A metal-organic framework and framework material technology, used in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc. And other issues
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Embodiment 1
[0033] This embodiment discloses a metal-organic framework material, the framework material comprises organic ligands and metal ions bridging each other in space, and its chemical formula is [A m o n (BPTC)] xB;
[0034] Among them, m=1-5, n=1-5, A is one of manganese, copper, cobalt, nickel, iron, zinc, BPTC is biphenyl tetracarboxylate, and B is selected from charged positive cations , including C 2 N + 、H 3 o + , NH 4 + , Li + 、Na + 、K + , Mg + , Ca + 、Al + One of, or positively charged macromolecules, including one of methylene blue, pyro red, rhodamine B, methyl green, crystal violet, magenta, and malachite green; X is 1-100.
[0035] The following embodiments of the present invention all adopt the chemical formula as C 8 h 2 MnO 5 ·C 4 N 2 The adsorption, desorption and re-adsorption of metal-organic framework material crystalline MOFs-1 were studied.
[0036] The framework material is orthorhombic, I2 1 2 1 2 1 space group, the unit cell parameters...
Embodiment 2
[0039] This embodiment also discloses a method for synthesizing the above-mentioned MOFs-1 metal-organic framework material, using manganese chloride tetrahydrate and 3,3',5,5'-biphenyltetracarboxylic acid according to the molar ratio of 1-5:5-1 After proportional mixing, add the mixed mixture into the solution, the mass concentration of the mixture is 1-100mg / ml; mix and react at 30-160°C for 0.5-7 days to obtain a metal organic framework material; the solvent is water, At least one or more of ethanol, methanol, chloroform, DMF, acetonitrile, and dichloromethane.
[0040] The preparation method of MOFs-1 used in the following examples of the present invention is as follows: after mixing manganese chloride tetrahydrate and 3,3',5,5'-biphenyltetracarboxylic acid in a molar ratio of 2:1, the mixed The mixture was added to the mixed solution of DMF, ethanol and water, the volume ratio of DMF, ethanol and water was 3:2:2, mixed and reacted at 100°C for 3 days to obtain the target ...
Embodiment 3
[0042] This example discloses a method for enriching the heavy metal mercury Hg by the metal-organic framework material MOFs-1 disclosed in Example 2 above.
[0043] Take 10mg of the synthesized crystal MOFs-1 and put it into a 10ml small volumetric flask, add 3ml of the prepared ethanol saturated solution of mercuric chloride (0.07mg / 1ml), and pay attention that the liquid level of the added solvent should be higher than the solid crystal. After sealing the bottle, place the vial in an oven at 60°C. After 8 hours, the vial was taken out, and it was observed that the crystals in the bottle changed from original pale pink to white. The crystal skeleton is negatively charged, and the positively charged mercury ions exchange the original guest dimethylamine molecules in the cavity and disperse in the pores of the crystal. Because the crystal framework itself is negatively charged, a thick layer of mercury ions is also attached to the crystal surface, which greatly increases the ...
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