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Graphite-phase carbon nitride nano sheet as well as preparation method and application thereof

A graphitic carbon nitride and nanosheet technology, applied in the field of photocatalytic degradation, can solve the problems of reduced photocatalytic activity, low specific surface area of ​​graphitic carbon nitride, etc., and achieves simple preparation process, easy mass production, specific surface area boosted effect

Inactive Publication Date: 2021-09-17
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the specific surface area of ​​graphitic carbon nitride obtained directly from the precursor thermal polymerization is relatively low, resulting in a decrease in its photocatalytic activity.

Method used

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  • Graphite-phase carbon nitride nano sheet as well as preparation method and application thereof
  • Graphite-phase carbon nitride nano sheet as well as preparation method and application thereof
  • Graphite-phase carbon nitride nano sheet as well as preparation method and application thereof

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Effect test

Embodiment 1

[0031] The preparation method of graphite phase carbon nitride nanosheets, the specific preparation steps are as follows:

[0032] (1) 50.0g urea is placed in the crucible;

[0033] (2) Place the crucible in step (1) in the muffle furnace, and set the muffle furnace at 2.3°C min -1 The heating rate is increased to 550°C and kept for 4 hours;

[0034] (3) After the reaction finishes, cool naturally to room temperature, and grind the obtained pale yellow solid into powder with a mortar;

[0035] (4) Add 1.0 g of the powder in step (3) into 50 ml of an aqueous solution of nitric acid with a concentration of 40.0ωt%, heat up to 60° C. while stirring, and keep the temperature constant for 4 hours;

[0036] (5) After the reaction is finished, naturally cool to room temperature, transfer the suspension to a centrifuge tube, and under the condition of 10000RPM, centrifuge for 15min to obtain a precipitate, and use a concentration of 1.0ωt% sodium carbonate solution to wash the preci...

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Abstract

The invention discloses a graphite-phase carbon nitride nano sheet as well as a preparation method and application thereof, the graphite-phase carbon nitride nano sheet is successfully prepared by a nitric acid stripping method, the specific surface area is increased, and the photocatalytic activity is enhanced. The graphite-phase carbon nitride nano sheet has good potential in treatment of NTO-containing industrial wastewater, nearly 96.0% of NTO is degraded after the graphite-phase carbon nitride nano sheet is irradiated by visible light for 100 min, and the performance of the graphite-phase carbon nitride nano sheet is superior to that of block graphite-phase carbon nitride and commercial P25 type titanium dioxide.

Description

technical field [0001] The invention belongs to the field of photocatalytic degradation, and relates to a graphite-phase carbon nitride nanosheet and a preparation method and application thereof. Background technique [0002] The full name of NTO is 3-nitro-1,2,4-triazol-5-one, which is a widely used energetic material. In the process of preparing NTO, a large amount of industrial wastewater containing NTO will inevitably be produced. The direct discharge of such waste water will cause serious pollution to the environment. At present, the wastewater treatment stations equipped in China mainly use biological methods, which cannot effectively treat industrial wastewater containing NTO. Therefore, how to deal with this type of industrial wastewater has become an urgent problem to be solved. [0003] Photodegradation technology is a kind of green environmental protection technology that uses photocatalyst as the medium to use solar energy to decompose organic pollutants. Lau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/02B01J35/10C02F1/30C02F101/38B01J35/00
CPCB01J27/24C02F1/30C02F2101/38C02F2305/10B01J35/61B01J35/39B01J35/40
Inventor 陈锟黎胜富刘伟李昊南李丽洁刘寰民
Owner BEIJING INSTITUTE OF TECHNOLOGYGY