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Iron oxide doped iron metal organic framework and green macro preparation method and application thereof

An iron oxide, organic framework technology, used in chemical instruments and methods, chemical/physical processes, oxidized water/sewage treatment, etc. Using iron mud and other problems to achieve the effect of simple recycling, no secondary pollution, and improving the quality of the water environment

Active Publication Date: 2019-12-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims at existing ferrous ion (iron ion) homogeneous catalysts in the activated persulfate system where ferrous ions are prone to failure, cannot be recycled and produce iron sludge, and the energy consumption in the synthesis process of metal-organic framework materials is high, Due to the harsh conditions of high temperature and high pressure, long synthesis cycle, serious secondary pollution, difficulty in separation and recovery, and low activation efficiency of iron-containing heterogeneous catalysts, a green metal-organic framework doped with iron oxides that can effectively solve the above problems is proposed. Macro-scale preparation and method for activating persulfate to degrade organic pollutants

Method used

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  • Iron oxide doped iron metal organic framework and green macro preparation method and application thereof
  • Iron oxide doped iron metal organic framework and green macro preparation method and application thereof
  • Iron oxide doped iron metal organic framework and green macro preparation method and application thereof

Examples

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Embodiment 1

[0035] This example provides a green macro-preparation method for iron oxide-doped iron metal organic frameworks, and different microwave heating times are used to prepare iron oxide-doped iron metal organic frameworks through the preparation method described in this example, including the following step:

[0036]Weigh ferrous sulfate heptahydrate with a molar mass of 8 mmol and trimesic acid with a molar mass of 8 mmol, place them in an agate mortar and grind them thoroughly until they are completely mixed, and transfer them to a 50 mL Teflon-lined microwave reactor . Then add 10 mL of sodium hydroxide solution with a molar concentration of 1.6 mol / L to the microwave reactor, tighten the lid of the microwave reactor, and after ultrasonication for 30 minutes, put the microwave reactor into the cavity of an ordinary household microwave oven, set the microwave power to 70w, and microwave The heating time is set to 50min, 60min, 70min, 90min and 120min respectively. After the mi...

Embodiment 2

[0039] This embodiment provides a method for preparing an iron oxide-doped iron metal-organic framework material, comprising the following steps:

[0040] (1) Weigh ferrous sulfate heptahydrate with a molar weight of 8 mmol and trimesic acid with a molar weight of 5.33 mmol and place them in an agate mortar and grind until they are completely mixed uniformly to obtain mixture-1;

[0041] (2) Weigh ferrous sulfate heptahydrate with a molar weight of 8 mmol and trimesic acid with a molar weight of 8 mmol and place them in an agate mortar and grind until they are completely mixed uniformly to obtain mixture-2;

[0042] (3) Weigh ferrous sulfate heptahydrate with a molar weight of 8 mmol and trimesic acid with a molar weight of 10.66 mmol and place them in an agate mortar and grind until they are completely mixed uniformly to obtain mixture-3;

[0043] (4) Transfer mixture-1, mixture-2 and mixture-3 to 50 mL polytetrafluoroethylene-lined microwave reactors, respectively. Then add...

Embodiment 3

[0045] This example provides a method for preparing iron oxide-doped iron metal-organic framework materials, and analyzes the preparation of iron oxide-doped iron metal-organic framework materials with different amounts of sodium hydroxide added. The preparation method includes the following steps :

[0046] Weigh ferrous sulfate heptahydrate with a molar weight of 8mmol and trimesic acid with a molar weight of 8mmol and place in an agate mortar and grind until fully mixed, and transfer the above mixture to 50mL polytetrafluoroethylene-lined microwave reactor. Then add to the microwave reactor

[0047] (1) 10mL ultrapure water;

[0048] (2) 10 mL of sodium hydroxide solution with a molar concentration of 1.6 mol / L;

[0049] (3) 10 mL of sodium hydroxide solution with a molar concentration of 2.4 mol / L;

[0050] After ultrasonication for 30 minutes, put the microwave reactor into the cavity of an ordinary household microwave oven, set the microwave power to 70w, and set the...

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Abstract

The invention discloses an iron oxide doped iron metal organic framework material and a green macro preparation method and an application thereof. The preparation method comprises the following steps:(1) grinding and mixing ferrous sulfate heptahydrate and trimesic acid evenly, adding a sodium hydroxide solution, transferring to a micro wave reaction kettle, carrying out ultrasonic treatment, heating, and cooling to room temperature to obtain a mixed liquid; and (2) washing the mixed liquid obtained in the step (1), centrifuging to obtain a solid, washing the obtained solid, and drying in vacuum to obtain the iron oxide doped iron metal organic framework material. A heterogeneous catalyst is synthesized by a microwave solid-phase co-crystallization method, the synthesis cycle is greatly shortened, the synthesis process is green, environmentally friendly and efficient, and the synthesized iron oxide doped iron metal organic framework material can make full use of an unsaturated metal site to efficiently activate persulfate to degrade organic pollutants, avoid the generation of iron mud, reduce the cost of synthesis of the heterogeneous catalyst material and the cost of degradationof organic pollutants, and improve water environment quality.

Description

technical field [0001] The invention belongs to the technical field of water pollution control, and relates to deep oxidation treatment and advanced oxidation technology of organic pollutants in water, in particular to an iron oxide doped iron metal organic framework and a green macro preparation method and application. Background technique [0002] Global environmental challenges, especially water pollution caused by rapid economic and industrialization growth, have become one of the most serious threats facing mankind today. Organic pollutants such as industrial dyes, pesticides, pharmaceuticals and personal care products (PPCPs) have attracted more attention due to their high toxicity and stability. Based on the sulfate radical (SO 4 ·- ) advanced oxidation process (SR-AOPs) has gradually become a hot spot in the treatment of organic pollutants. Compared with the traditional advanced oxidation process based on hydroxyl radical OH, SR-AOP has many advantages: SO 4 ·- ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C02F1/72C02F101/30
CPCB01J31/1691B01J31/223B01J2531/842C02F1/722C02F2101/308C02F2101/40
Inventor 万金泉万勇杰马邕文王艳闫志成
Owner SOUTH CHINA UNIV OF TECH
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