MOF complex and synthesizing method thereof and application of MOF complex for absorbing organic dye in waste water

A technology of complexes and dyes, applied in the direction of adsorption of water/sewage treatment, water pollutants, and other chemical processes, to achieve superior adsorption capacity, reduce pollution, and reduce treatment costs

Active Publication Date: 2018-08-03
NORTHWEST NORMAL UNIVERSITY
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  • Description
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  • MOF complex and synthesizing method thereof and application of MOF complex for absorbing organic dye in waste water
  • MOF complex and synthesizing method thereof and application of MOF complex for absorbing organic dye in waste water
  • MOF complex and synthesizing method thereof and application of MOF complex for absorbing organic dye in waste water

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Embodiment Construction

[0029] The synthesis of the MOF complex of the present invention and the fluorescence recognition of Fe are as follows through specific examples 3+ method is further explained.

[0030] 1. Synthesis of MOF complexes

[0031] Ligand H 2 L (0.0226g, 0.1mmol) was dissolved in 6 mL of acetonitrile / water (1:1 v / v), then added to a 10mL reactor, and then 0.25 mL of Zn(NO 3 ) 2 ·6H 2 Aqueous solution of O (0.4 mol∙L -1 ), stirred to form a suspension. Then the suspension was placed in a 25 mL polytetrafluoroethylene autoclave and reacted at 140 °C for 4 days. When the temperature dropped to room temperature, a colorless flaky crystal was obtained, which was washed with distilled water and dried naturally to obtain the MOF complex. Yield 36.0%.

[0032] Infrared data (KBr, cm -1): 3500(m), 3105(m), 3023(w), 2922(m), 2856(w), 1574(s), 1376(m), 1288(w), 1142(w), 987(w ), 892(w), 756(w), 675(w).

[0033] 2. Application of MOF complexes in the treatment of dye wastewater

[00...

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Abstract

The invention relates to a synthesizing method of a MOF complex. The method comprises the following steps: dissolving a ligand H2L in an acetonitrile/water mixed solution, adding Zn(NO3)2.6H2O aqueoussolution, stirring the materials and uniformly forming a fluid suspension, placing the mixed fluid suspension in a high pressure reaction vessel, reacting the mixed fluid suspension for 90-100 h at the temperature of 130-140 DEG C; after the temperature is reduced to room temperature, obtaining colorless lamellar crystal, washing the material with distilled water, and naturally drying the material to obtain the MOF complex. A structural formula is [Zn(L)2(2H2O)] 4H2O. The synthesized MOF complex presents excellent capability for a dye in waste water in an aqueous solution, and can be used forprocessing dye waste water. After dye molecule adsorption, the frame of the MOF complex is kept intact, and can be reutilized. The processing cost of the dye waste water is reduced, and the pollutionof the dye waste on environment is greatly reduced.

Description

technical field [0001] The present invention relates to a variety of MOF complexes and their synthesis, and also relates to an application of the MOF complexes—used as a dye adsorbent in the treatment of dye wastewater. Background technique [0002] Dye wastewater has deep chroma, high content of organic pollutants, complex components, heavy metals and biological toxicity, and is difficult to biodegrade. Teratogenic, mutagenic) performance of organic matter, very harmful to environmental pollution. As we all know, the methods for removing dyes from industrial wastewater include biodegradation, electrochemical destruction, precipitation, photocatalytic degradation, and physical adsorption. Among them, adsorption is a simpler, more effective, low-cost, by-product-free, and environmentally friendly method. [0003] MOFs (metal-organic frameworks) are porous crystalline materials formed by the self-assembly process of rigid organic ligands containing oxygen or nitrogen and inor...

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Application Information

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IPC IPC(8): B01J20/22B01J20/30C02F1/28C08G83/00C02F101/30C02F101/34C02F101/38C02F101/36
CPCB01J20/226C02F1/285C02F2101/308C02F2101/34C02F2101/36C02F2101/38C02F2101/40C08G83/008
Inventor 杨云霞董文静徐敏张海霞
Owner NORTHWEST NORMAL UNIVERSITY
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