Application of manganese oxide-fullerene hybrid material in near-infrared light denitrification

A near-infrared light and fullerene technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc.

Active Publication Date: 2017-04-26
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, TiO 2 It can only use ultraviolet light, which accounts for about 4% of solar energy, for TiO 2 Doping and developing Fe 2 o 3 、WO 3 、Bi 2 WO 6 Although some new catalysts have partially solved the problem of utilizing visible light, infrared light, which accounts for nearly 50% of solar energy, still needs to be developed and utilized.

Method used

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  • Application of manganese oxide-fullerene hybrid material in near-infrared light denitrification
  • Application of manganese oxide-fullerene hybrid material in near-infrared light denitrification

Examples

Experimental program
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Embodiment 1

[0038] (1)C 60 -α-MnO 2 Preparation: Weigh manganese chloride and potassium permanganate (molar ratio of 3:2), and dissolve them in 20 mL of deionized water respectively, and add 5% fullerenes of the theoretical yield of manganese dioxide to the manganese chloride solution. , transferred to a three-necked flask by ultrasonic for 1 hour, heated to 85°C in a water bath, and added dropwise with potassium permanganate, refluxed into a condenser for 12h, filtered and washed, and vacuum-dried at 70°C for 12 hours to obtain the fullerene. -α-Manganese dioxide nanocomposite photocatalyst.

[0039] (2) Photocatalysis experiment: wrap the wall of a 100ml beaker with tin foil to prevent ultraviolet light and visible light from entering the reaction system, and cover the beaker mouth with a λ>780nm cut-off filter to ensure that only near-infrared light The radiation entered the photoreactor, and a 300W UV-Vis lamp was placed above the reactor. Add a certain concentration of ammonia nit...

Embodiment 2

[0045] C 60 -β-MnO 2 Preparation: Weigh manganese chloride and potassium permanganate (molar ratio of 3:2), dissolve them in 20 mL of deionized water respectively, then add 5% fullerenes of the theoretical yield of manganese dioxide to the manganese chloride solution, ultrasonically For 1 hour, add potassium permanganate solution, stir for 30min, transfer to a 100ml reaction kettle, heat at 160°C for 12h, cool to room temperature, filter and wash, and dry under vacuum at 70°C for 12h to obtain the fuller En-β-manganese dioxide nanohybrid photocatalysts.

[0046] (2) Photocatalysis experiment: wrap the wall of a 100ml beaker with tin foil to prevent ultraviolet light and visible light from entering the reaction system, and cover the beaker mouth with a λ>780nm cut-off filter to ensure that only near-infrared light The radiation entered the photoreactor and a 300W UV-Vis lamp was placed above the reactor. Add a certain concentration of ammonia nitrogen solution to the beaker,...

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Abstract

The invention discloses an application of a manganese oxide-fullerene hybrid material in near-infrared light denitrification. The application comprises the steps that under the near-infrared light condition, the manganese oxide-fullerene hybrid material serves as a photocatalyst, and ammonia nitrogen is degraded into N2 and H2O. The manganese oxide-fullerene hybrid material catalytically degrades ammonia nitrogen, and has molecular recognition and infrared light catalytic degrading functions on the ammonia nitrogen, the ammonia nitrogen can be degraded into N2 and H2O through the manganese oxide-fullerene hybrid material under near-infrared light; and after the photocatalyst catalytically degrades ammonia nitrogen repeatedly for 5-10 times, the degradation rate of the ammonia nitrogen can still be made larger than 95%.

Description

technical field [0001] The invention relates to a manganese oxide composite fullerene material and its application in catalytic degradation of ammonia nitrogen by utilizing near-infrared light. Background technique [0002] The use of solar energy to solve environmental energy problems originated in 1972 when Fujishima used TiO 2 Photoelectrode electrolysis of water for hydrogen production, followed by Carey in 1976 reported the use of TiO 2 Photocatalytic oxidation eliminates the toxicity of polychlorinated diphenols. Since then, the study of degrading environmental pollutants by solar energy has quickly become a research hotspot. However, TiO 2 Only ultraviolet light, which accounts for about 4% of solar energy, can only be used. 2 Doping and developing Fe 2 O 3 , WO 3 , Bi 2 WO 6 Although the use of visible light has been partially solved, the infrared light, which accounts for nearly 50% of solar energy, still needs to be developed and utilized. SUMMARY OF THE ...

Claims

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Application Information

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IPC IPC(8): C02F1/30B01J31/32B01J35/10C02F101/16
CPCC02F1/30B01J31/32C02F2305/10C02F2101/16B01J35/613B01J35/39
Inventor 刘守清朱晓雷
Owner SUZHOU UNIV OF SCI & TECH
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