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Application of manganese oxide-fullerene hybrid materials 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: 2019-08-30
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 materials in near-infrared light denitrification
  • Application of manganese oxide-fullerene hybrid materials in near-infrared light denitrification

Examples

Experimental program
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Embodiment 1

[0038] (1)C 60 -α-MnO 2 The preparation of: take by weighing manganese chloride and potassium permanganate (molar ratio is 3:2), and dissolve in 20mL deionized water respectively, add the fullerene of 5% of manganese dioxide theoretical output in the manganese chloride solution , sonicated for 1 hour, transferred to a three-necked flask, heated in a water bath to 85°C, and potassium permanganate was added dropwise, refluxed for 12 hours, then 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 mouth of the beaker with a λ>780nm cut-off filter to ensure that only near-infrared light is present. The radiation enters the photoreactor, and a 300W UV-Vis lamp is placed above the reactor. Add a certain concentration of a...

Embodiment 2

[0045] C 60 -β-MnO 2 Preparation: Weigh manganese chloride and potassium permanganate (molar ratio is 3:2), dissolve in 20mL deionized water respectively, add 5% fullerene of manganese dioxide theoretical yield in the manganese chloride solution afterwards, ultrasonic After 1 hour, potassium permanganate solution was added, stirred for 30 minutes, transferred to a 100ml reaction kettle, heated at 160°C for 12h, cooled to room temperature, filtered and washed, and dried under vacuum at 70°C for 12h to obtain the fuller Enene-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 mouth of the beaker with a λ>780nm cut-off filter to ensure that only near-infrared light is present. The radiation enters the photoreactor, and a 300W UV-Vis lamp is placed above the reactor. Add a certain concentration of ammon...

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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 using near-infrared light. Background technique [0002] Using solar energy to solve environmental energy problems originated in 1972 when Fujishima used TiO 2 Photoelectrode electrolysis of water to produce hydrogen, followed by Carey in 1976 reported the use of TiO 2 Photocatalytic oxidation eliminates the toxicity of polychlorinated diphenols. Since then, the use of solar energy to degrade environmental pollutants has rapidly become a research hotspot. 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 such as X-rays 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 util...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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