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Preparation method and application of bifunctional MOF nano-catalyst for degrading p-nitrophenol and fixing nitrogen at room temperature

A technology of p-nitrophenol and nano-catalyst, applied in the preparation/separation of ammonia, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high overpotential and low value, and achieve low cost and enhanced reduction Ability, response and easy operation

Inactive Publication Date: 2020-06-26
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Oxidation of water also requires a high overpotential, and the product O 2 low value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Preparation method of a bifunctional MOF nanocatalyst for degrading p-nitrophenol and simultaneously fixing nitrogen at room temperature

[0024] 0.5 mmol isophthalic acid H 3 The BTC ligand was dissolved in 2 mL of absolute ethanol and 2 mL of N, N-dimethylformamide DMF mixture, and ultrasonicated at 180 W for 1 min to obtain clear isophthalic acid H 3 BTC ligand solution;

[0025] 1.0 mmol Zn (NO 3 ) 2 ·6H 2 O, 1.0 mmol Co(NO 3 ) 2 ·6H 2 O and 8mL H 2 O blending, 180 W ultrasonic 1min, obtain the mixed liquor of zinc nitrate and cobalt nitrate;

[0026]Blend the mixture of zinc nitrate and cobalt nitrate with the ligand solution, add 1.0 mmol triethanolamine TEOA solution under vigorous stirring, continue to add 1.0 cm × 1.0 cm activated carbon cloth CC, and mix the carbon cloth CC Heated at 100°C for 10 hours to obtain a composite material of Zn-MOF and Co-MOF crystals loaded on carbon cloth CC, washed with ethanol and ultrapure water three times respect...

Embodiment 2

[0032] 1. Preparation method of a bifunctional MOF nanocatalyst for degrading p-nitrophenol and simultaneously fixing nitrogen at room temperature

[0033] 0.65mmol isophthalic acid H 3 The BTC ligand was dissolved in 3 mL of absolute ethanol and 3 mL of N, N-dimethylformamide DMF mixture, and ultrasonicated at 180 W for 1 min to obtain clear isophthalic acid H 3 BTC ligand solution;

[0034] 1.4mmolZn(NO 3 ) 2 ·6H 2 O, 1.4mmol Co(NO 3 ) 2 ·6H 2 O and 12 mL H 2 O blending, 180 W ultrasonic 1min, obtain the mixed liquor of zinc nitrate and cobalt nitrate;

[0035] Blend the mixture of zinc nitrate and cobalt nitrate with the ligand solution, add 1.3 mmol triethanolamine TEOA solution under vigorous stirring, continue to add 1.0 cm × 1.0 cm activated carbon cloth CC, and mix the carbon cloth CC Heated at 100°C for 11 hours to obtain a composite material of Zn-MOF and Co-MOF crystals loaded on carbon cloth CC, washed with ethanol and ultrapure water three times respecti...

Embodiment 3

[0041] 1. Preparation method of a bifunctional MOF nanocatalyst for degrading p-nitrophenol and simultaneously fixing nitrogen at room temperature

[0042] 0.8 mmol isophthalic acid H 3 The BTC ligand was dissolved in 4 mL of absolute ethanol and 4 mL of N, N-dimethylformamide DMF mixture, and ultrasonicated at 180 W for 1 min to obtain clear isophthalic acid H 3 BTC ligand solution;

[0043] 1.6 mmol Zn (NO 3 ) 2 ·6H 2 O, 1.6 mmol Co(NO 3 ) 2 ·6H 2 O and 16 mL H 2 O blending, 180 W ultrasonic 1min, obtain the mixed liquor of zinc nitrate and cobalt nitrate;

[0044] Blend the mixture of zinc nitrate and cobalt nitrate with the ligand solution, add 1.6 mmol triethanolamine TEOA solution under vigorous stirring, continue to add 1.0 cm × 1.0 cm activated carbon cloth CC, and mix the carbon cloth CC Heated at 100°C for 12 hours to obtain a composite material of Zn-MOF and Co-MOF crystals loaded on carbon cloth CC, washed with ethanol and ultrapure water for 3 times, and...

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Abstract

The invention discloses a preparation method of a bifunctional MOF (Metal Organic Framework) nano-catalyst for degrading p-nitrophenol and simultaneously fixing nitrogen at room temperature and application of the bifunctional MOF nano-catalyst based on bifunctional electrocatalysis of the catalyst, and belongs to the technical field of metal organic framework material technologies and nano-catalysis. The preparation method comprises the following main steps: blending an isophthalic acid ligand solution with a mixed solution of zinc nitrate and cobalt nitrate, and adding a triethanolamine solution and activated carbon cloth to prepare a carbon cloth loaded Zn-MOF and Co-MOF crystal composite material; and activating the composite material in a 250 W microwave oven for 3 min to obtain the bifunctional MOF nano-catalyst. The catalyst is prepared from low-cost raw materials, is low in reaction energy consumption and has a good industrial prospect. The catalyst is used for degrading p-nitrophenol and fixing nitrogen at room temperature, and has the advantages of simple equipment, high electrochemical stability and the like.

Description

technical field [0001] The invention discloses a preparation method of a dual-functional MOF nano-catalyst for degrading p-nitrophenol and simultaneously fixing nitrogen at room temperature and the application of the dual-functional electrocatalysis based on the catalyst, which belongs to the technical fields of metal-organic framework materials and nano-catalysis. Background technique [0002] Ammonia is the second most produced chemical in the world. In 2015, global ammonia production was close to 146 million tons and is expected to increase by 40% by 2050. Ammonium fertilizers can help increase the food supply for the global population. At the same time, ammonia can also play an important role in the development of clean transportation industries, which can be used directly in ammonia fuel cells or indirectly in hydrogen fuel cells. But since the bonding energy of diatomic nitrogen is 940.95 kJ mol -1 , making ammonia synthesis from nitrogen a complex multi-step reactio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C02F1/461C01C1/04C02F101/34
CPCB01J31/1691B01J31/223C01C1/0411C02F1/461B01J2531/26B01J2531/845C02F2101/345Y02P20/52
Inventor 侯莹匡轩张洋
Owner UNIV OF JINAN
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