Preparation method for synthesizing photo-catalytic material by using MOF as precursor

A catalytic material and synthetic light technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., to achieve the effects of stable material structure, simple process operation, and large output

Active Publication Date: 2019-08-30
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, no methods for synthesizing photocatalytic materials using MOFs as precursors have been reported

Method used

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  • Preparation method for synthesizing photo-catalytic material by using MOF as precursor
  • Preparation method for synthesizing photo-catalytic material by using MOF as precursor
  • Preparation method for synthesizing photo-catalytic material by using MOF as precursor

Examples

Experimental program
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Effect test

Embodiment 1

[0050] At 25°C, weigh 1.5g terephthalic acid (H 3 BTC), take a clean beaker, measure 60mL of anhydrous methanol, then add the weighed drug into it, put it into an ultrasonic machine to ultrasonically disperse the drug in the anhydrous methanol solution, mix and stir until completely dissolved, and wait for the solution After dissolving evenly, weigh bismuth nitrate pentahydrate (0.3g) into the beaker, stir evenly, after the solution is uniformly dissolved, pour the same amount into several reaction kettles, then put the reaction kettles into a water heating tank, and react at 120°C for 24h . After the reaction was completed, the product was centrifuged at 10000r / min for 5 minutes, and then dried in an oven at 60°C for 12 hours to finally obtain the BiMOF material, whose x-ray powder diffraction pattern ( figure 1 ) is shown as the characteristic diffraction peak of CAU-17, scanning electron micrograph ( figure 2 ) shows that the material exhibits a rod-like morphology. Wei...

Embodiment 2

[0052] At 25°C, weigh 1.5g terephthalic acid (H 3 BTC), take a clean beaker, measure 60mL of anhydrous methanol, then add the weighed drug into it, put it into an ultrasonic machine to ultrasonically disperse the drug in the anhydrous methanol solution, mix and stir until completely dissolved, and wait for the solution After dissolving evenly, weigh bismuth nitrate pentahydrate (0.3g) into the beaker, stir evenly, after the solution is uniformly dissolved, pour the same amount into several reaction kettles, then put the reaction kettles into a water heating tank, and react at 120°C for 24h . After the reaction was completed, the product was centrifuged at 10,000 r / min for 5 minutes, and dried in an oven at 60°C for 12 hours to finally obtain the BiMOF material. Weigh 0.2216g ammonium metatungstate ((NH 4 ) 6 h 2 W 12 o 40 ·xH 2 0), take a clean beaker, measure 50mL of deionized water, add the weighed medicine into it, stir in a 60°C water bath until clarification, weigh...

Embodiment 3

[0054] At 25°C, weigh 1.5g terephthalic acid (H 3 BTC), take a clean beaker, measure 60mL of anhydrous methanol, then add the weighed drug into it, put it into an ultrasonic machine to ultrasonically disperse the drug in the anhydrous methanol solution, mix and stir until completely dissolved, and wait for the solution After dissolving evenly, weigh bismuth nitrate pentahydrate (0.3g) into the beaker, stir evenly, after the solution is uniformly dissolved, pour the same amount into several reaction kettles, then put the reaction kettles into a water heating tank, and react at 120°C for 24h . After the reaction was completed, the product was centrifuged at 10,000 r / min for 5 minutes, and dried in an oven at 60°C for 12 hours to finally obtain the BiMOF material. Weigh 0.5308g ammonium molybdate tetrahydrate (H 32 Mo 7 N 6 o 28 ), take a clean beaker, measure 50mL of deionized water, add the weighed drug into it, stir in a 60°C water bath until clear, weigh 0.5022g of the B...

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Abstract

The invention discloses a preparation method for synthesizing a photo-catalytic material by using a MOF as a precursor, and belongs to the field of catalysts. The method adopts a manner that the MOF is used as the precursor to synthesize the photo-catalytic material. Firstly, a metal organic framework MOF of bismuth (such as CAU-17) with uniform morphology and stable structure is synthesized, theMOF and a metal salt aqueous solution are stirred under a water bath condition, a mixed solution formed after stirring is subjected to centrifugal drying, and calcination is carried out at a certain temperature to obtain the photo-catalytic material which can maintain a MOF appearance frame. The method has the advantages of short cycle, large output, simple process operation, stable product performance, good catalytic performance, and being not easy to cause secondary pollution. The method is suitable for large-scale mass production, and has a relatively broad scientific research and practicalvalue.

Description

[0001] Technical field [0002] The invention relates to a preparation method for synthesizing photocatalytic materials using MOF (metal organic framework) as a precursor, belonging to the field of catalysts. Background technique [0003] In recent years, visible light-responsive photocatalysts have been widely studied, because of their narrow band gap, suitable energy band position, stable chemical properties and other excellent characteristics, they have bright application prospects in many research fields, especially in the field of photocatalysis. The application of degrading organic pollutants and photocatalytic decomposition of water to produce oxygen has become a research hotspot today. [1] [0004] At present, there are many methods for the synthesis of photocatalytic materials, common high-temperature solid-state reaction method, chemical precipitation method, sol-gel method, hydrothermal / solvothermal method, microwave-assisted method [2] Wait. The hydrothermal / sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/22B01J23/31B01J35/02C02F1/30C02F101/36C02F101/38
CPCB01J23/002B01J23/22B01J23/31B01J35/004B01J35/026C02F1/30C02F2101/36C02F2101/38C02F2101/40C02F2305/10
Inventor 于然波陈剑飞王祖民陈晓煜何奕磊
Owner UNIV OF SCI & TECH BEIJING
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