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Preparation method of metal-organic framework material photocatalyst and application

A metal-organic framework and photocatalyst technology, which is applied in the direction of catalyst activation/preparation, organic compound/hydride/coordination complex catalyst, chemical instrument and method, etc., can solve the problems of high energy consumption and long reaction time, and achieve High degradation rate, short reaction time, widening research field effect

Inactive Publication Date: 2015-04-22
HENAN POLYTECHNIC UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of MOF235 as a photocatalyst for the photocatalytic degradation of organic pollutants has not been reported
Moreover, the synthesis methods of MOF235 reported in the literature are all hydrothermal methods, with long reaction time (24h) and high energy consumption.

Method used

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  • Preparation method of metal-organic framework material photocatalyst and application
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preparation example Construction

[0021] A method for preparing a metal-organic framework material photocatalyst, comprising the following steps:

[0022] Step 1. Take the organic ligand 1,4-terephthalic acid, dissolve it in N,N-dimethylformamide, stir at room temperature for 5-20 min, and obtain a clear and transparent solution for later use;

[0023] Step 2, adding ferric chloride to the clear and transparent solution obtained in step 1, and stirring at room temperature for 5-20 min to obtain a mixed solution for subsequent use;

[0024] Step 3, add ethanol solution to the mixed solution obtained in step 2, mix evenly, transfer to the reactor, place the reactor in a microwave digestion apparatus, o Reaction at C temperature for 20-50 min, after the reaction is completed, cool and pour off the supernatant to obtain a solid product for subsequent use;

[0025] Step 4, the solid product obtained in step 3 is washed with a mixed solvent of N,N-dimethylsulfoxide-ethanol with a volume ratio of 1:5, and centrifuga...

Embodiment 1

[0031] A method for preparing a metal-organic framework material photocatalyst, comprising the following steps:

[0032] Step 1. Take 0.5125 g of the organic ligand 1,4-terephthalic acid, dissolve it in 30 ml of N,N-dimethylformamide, stir at room temperature for 10 min, and obtain a clear and transparent solution for later use;

[0033] Step 2. Add 0.5000 g of metal iron salt, ferric chloride, to the clear and transparent solution obtained in step 1, and stir for 10 min at room temperature to obtain a mixed solution for subsequent use;

[0034] Step 3. Add ethanol solution to the mixed solution obtained in step 2. The volume ratio of the mixed solution and the ethanol solution is 1:1, mix well, transfer to the reaction kettle, and then place the reaction kettle in a microwave digestion instrument, set the power to 500W , at 100 o Reaction at C temperature for 50 min, after the completion of the reaction, cooling and decanting the supernatant to obtain a solid product for sub...

Embodiment 2

[0039] A method for preparing a metal-organic framework material photocatalyst, comprising the following steps:

[0040] Step 1. Take 0.1543 g of organic ligand 1,4-terephthalic acid, dissolve it in 30 ml of N,N-dimethylformamide, stir at room temperature for 5 min, and obtain a clear and transparent solution for later use;

[0041] Step 2. Add 0.5000 g of metal iron salt, ferric chloride, to the clear and transparent solution obtained in step 1, and stir for 10 min at room temperature to obtain a mixed solution for subsequent use;

[0042] Step 3, add ethanol solution to the mixed solution obtained in step 2, the volume ratio of the mixed solution and the ethanol solution is 1:1, mix evenly, transfer to the reaction kettle, then place the reaction kettle in a microwave digestion instrument, at 80 o React at temperature C for 50 minutes. Set the power of the microwave digestion instrument to 600W for the first 30 minutes and 400W for the last 20 minutes. After the reaction is ...

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Abstract

The invention discloses a preparation method of a metal-organic framework material photocatalyst. The method comprises the following steps: 1. dissolving an organic-ligand in N,N-dimethyl formamide, and stirring to obtain a clear and transparent solution; 2. adding ferric chloride, and stirring to obtain a mixed solution; 3. adding an ethanol solution, mixing evenly, transferring to a reaction kettle, putting the reaction kettle into a microwave digestion instrument, reacting at 80-130 DEG C for 20-50 minutes, and removing a supernatant liquid after reacting, so as to obtain a solid product; 4. washing the solid product with an N,N-dimethyl sulfoxide-ethanol mixed solvent, filtering and drying, so as to obtain an MOF235 photocatalyst. According to the photocatalyst disclosed by the invention, organic pollutants in the wastewater can be efficiently degraded; the preparation method is simple, efficient, and low in energy consumption; and the prepared MOF235 photocatalyst is relatively high in degradation rate.

Description

technical field [0001] The invention belongs to the field of preparation of functional materials, and mainly relates to a preparation method and application of a metal organic framework material photocatalyst. Background technique [0002] In recent years, water pollution and water quality deterioration have become one of the most serious global environmental problems, and research on ways to eliminate toxic chemicals in water has become the focus and focus of scientists' research. Photocatalytic technology is an energy-saving, efficient and green technology developed in recent years, which has the advantages of low energy consumption, mild reaction conditions, and less secondary pollution. A large number of research results show that the use of photocatalytic technology can effectively degrade, decolorize, detoxify, and finally mineralize toxic pollutants in water such as dyes into water and carbon dioxide, thereby eliminating environmental pollution. Traditional inorg...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01J37/10B01J37/34C02F1/30C02F101/38
Inventor 李英杰侯广顺董春敏杨娟
Owner HENAN POLYTECHNIC UNIV
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