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Manganese ion-doped metal organic framework material and preparation method and application thereof

A metal-organic framework and manganese ion technology, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the problems of low pollutant adsorption performance, lack of functional groups and adsorption sites, etc. Achieve the effect of fewer types of raw materials, low cost and good adsorption performance

Active Publication Date: 2018-11-30
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, metal-organic frameworks lack functional groups and adsorption sites, resulting in poor adsorption performance for pollutants in water.

Method used

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  • Manganese ion-doped metal organic framework material and preparation method and application thereof
  • Manganese ion-doped metal organic framework material and preparation method and application thereof
  • Manganese ion-doped metal organic framework material and preparation method and application thereof

Examples

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Embodiment 1

[0033] A metal-organic framework material doped with manganese ions, including UiO-66(Zr), wherein UiO-66(Zr) is doped with manganese ions.

[0034] In this embodiment, the molar ratio of manganese ions to UiO-66 (Zr) is 1:1.

[0035] A method for preparing the manganese ion-doped metal-organic framework material in the above embodiment, comprising the following steps:

[0036] (1) Weigh zirconium chloride, terephthalic acid, and manganese chloride tetrahydrate and disperse them in N, N dimethylformamide (DMF), and stir for 1 hour at a rotation speed of 150r / min to obtain a mixed solution; among them, The molar ratio of zirconium chloride, manganese chloride tetrahydrate, terephthalic acid and N,N dimethylformamide is 1:1:1:162.

[0037] (2) The mixed solution prepared in step (1) was placed in a reaction kettle lined with polytetrafluoroethylene, and a solvothermal reaction was carried out at a temperature of 120° C., and the reaction time was 24 hours.

[0038] (3) The rea...

Embodiment 2

[0042] An application of a manganese ion-doped metal-organic framework material in removing antibiotics or heavy metals in water, specifically using manganese ion-doped metal-organic framework material to adsorb and remove tetracycline hydrochloride and Cr(VI) in water, comprising the following steps:

[0043] Weigh the manganese ion-doped metal-organic framework (MnUiO-66(Zr)) prepared in Example 1 and the metal-organic framework (UiO-66(Zr)) prepared in Comparative Example 1, each 30 mg, respectively Add it to 100mL tetracycline hydrochloride wastewater with a concentration of 20 mg / L and a pH of 5.74, and perform vibration adsorption at a rotation speed of 150 r / min to complete the removal of tetracycline hydrochloride in the water. During the shaking adsorption process, 4mL samples were taken at regular intervals, and the samples were centrifuged. The supernatant obtained by centrifugation was taken to measure the absorbance by an ultraviolet-visible spectrophotometer to d...

Embodiment 3

[0051] An application of a manganese ion-doped metal-organic framework material in removing antibiotics or heavy metals in water, specifically using manganese ion-doped metal-organic framework material to adsorb and remove tetracycline hydrochloride and Cr(VI) in water, comprising the following steps:

[0052] Weigh 9 parts of the manganese ion-doped metal-organic framework (MnUiO-66(Zr)) prepared in Example 1, 30 mg each, and add to 9 parts of 100 mL hydrochloric acid with a concentration of 20 mg / L and a pH of 5.74 In the tetracycline wastewater, add NaCl, NaCl, Na respectively in these 9 parts of tetracycline hydrochloride wastewater 2 SO 4 、Na 3 PO 4 , and control NaCl, Na 2 SO 4 、Na 3 PO 4 The concentrations in the solution were 5 mmol / L, 10 mmol / L, and 15 mmol / L, respectively, and the vibration adsorption was carried out at a rotation speed of 150 r / min for 24 hours to complete the removal of tetracycline hydrochloride in the water. During the shaking adsorption p...

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Abstract

The invention discloses a manganese ion-doped metal organic framework material and a preparation method and application thereof. The material comprises UiO-66 (Zr) and is doped with manganese ions. The preparation method of the material comprises the following steps: mixing zirconium chloride, terephthalic acid, manganese chloride tetrahydrate and N,N-dimethylformamide, and performing a solvothermal reaction so as to obtain the manganese ion-doped metal organic framework material. The manganese ion-doped metal organic framework material has the advantages of large adsorption capacity, good adsorption performance, good stability and the like, has simple synthesis, can be widely used, can efficiently adsorb and remove pollutants in water bodies, and is a new adsorbent; the preparation methodof the material has the advantages of simple operation, convenient preparation, few kinds of raw materials, high output, low cost and the like, and the material can be widely used for treating antibiotic wastewater and / or heavy metal wastewater, and has the advantages of convenient operation, simple equipment, low processing cost, high treatment efficiency and a good removal effect, and has a good application value and application prospect.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to a manganese ion-doped metal organic framework material and a preparation method and application thereof. Background technique [0002] Antibiotics are widely used in human and veterinary therapy, animal husbandry and aquaculture. For example, tetracycline is a broad-spectrum antibiotic with an annual output of thousands of tons. However, tetracyclines are rarely biodegraded and metabolized, and most (approximately 30%-90%) tetracyclines are excreted into the environment through feces or raw urine. Tetracycline residues can be detected in soil, sediment, surface water, groundwater and even drinking water. In addition to antibiotic pollution, heavy metal pollution also harms the environment. For example, chromium in the positive hexavalent form in the aquatic environment is considered to be a toxic and carcinogenic substance in most cases. Therefore, it is extremely urgent to e...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30C02F1/28C02F101/30C02F101/20
CPCB01J20/0222B01J20/226B01J20/30C02F1/285C02F2101/20C02F2101/30
Inventor 熊炜平曾茁桐李鑫曾光明肖嵘杨朝晖赖萃曹姣周成赟陈裕鹏余军汪文军
Owner HUNAN UNIV
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