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Preparation method and application of crumpled graphite phase carbon nitride

A graphitic carbon nitride, wrinkle technology, applied in chemical instruments and methods, nitrogen compounds, nitrogen and non-metallic compounds, etc., can solve problems such as low activity, improve electronic structure, enhance photocatalytic performance, and enhance photocatalysis performance effect

Inactive Publication Date: 2017-11-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphitic carbon nitride (g-C 3 N 4 ) as a carrier for photocatalytic hydrogen production of formic acid has low activity

Method used

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  • Preparation method and application of crumpled graphite phase carbon nitride
  • Preparation method and application of crumpled graphite phase carbon nitride
  • Preparation method and application of crumpled graphite phase carbon nitride

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specific Embodiment approach 1

[0020] Embodiment 1: This embodiment is a method for preparing carbon nitride with a wrinkled graphite phase, and the specific process is as follows:

[0021] 1. Put melamine in a single-necked flask, add absolute ethanol, ultrasonically disperse for 2-3 minutes, then add glyoxal aqueous solution and ultrasonically disperse for 10-15 min, place the single-necked flask on a magnetic heating stirrer, and place the bottle of the single-necked flask The mouth of the condenser is connected to the condenser tube, and the other end of the condenser tube is opened, and condensed and refluxed in an oil bath at 80°C to 85°C for 1h to 1.5h, and the product obtained in the single-necked flask is dried at 60°C for 12h to 14h to remove the reaction solvent ethanol; The quality of described melamine and the volume ratio of dehydrated alcohol are 1g:(5mL~6mL); The concentration of described glyoxal aqueous solution is 8.8mol / L; In described glyoxal aqueous solution, glyoxal and melamine The m...

specific Embodiment approach 2

[0024] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is: in step 1, condense and reflux in an oil bath at 80° C. for 1 hour. Others are the same as the first embodiment.

specific Embodiment approach 3

[0025] Specific embodiment three: the difference between this embodiment and specific embodiment one is: the volume ratio of the mass of melamine described in step one to absolute ethanol is 1g:5mL. Others are the same as the first embodiment.

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Abstract

Relating to a preparation method of graphite phase carbon nitride and application thereof, the invention provides a preparation method of crumpled graphite phase carbon nitride and application thereof. The invention aims to solve the technical problem of low activity of graphite phase carbon nitride used as a carrier for photocatalysis of formic acid to produce hydrogen at present. The preparation method includes: 1. mixing of melamine with glyoxal, and condensation reflux; 2. sintering; and 3. pickling, condensation reflux and centrifugation. The crumpled graphite phase carbon nitride prepared by the method provided by the invention can be used as a catalyst carrier. The invention employs a simple thermal decomposition method to synthesize the crumpled graphite phase carbon nitride catalyst carrier, the crumpled graphite phase carbon nitride not only maintains the photocatalytic performance of the graphite phase carbon nitride material itself, and also can be used as the catalyst carrier to improve the photocatalytic performance of the catalyst. The method has the characteristics of simple preparation and low raw material cost, and is easy for industrial production. The obtained crumpled graphite phase carbon nitride has potential application value in the fields of photolysis of water, artificial photosynthesis, organic pollutant degradation, carbon dioxide reduction, catalyst carriers and the like.

Description

technical field [0001] The invention relates to a preparation method and application of graphite phase carbon nitride. Background technique [0002] With the emergence of the energy crisis and the deterioration of the global environment, finding clean energy to replace fossil energy is the biggest challenge for the development of modern science. In the past ten years, great efforts are being made to explore and develop new energy sources and find ways to improve energy utilization. Among the many new energy sources, solar energy has been continuously converted into the energy needed by human beings. However, the existing technology is too low for solar energy utilization. Therefore, the use of non-metallic elements (such as C, N, O, etc.) The clean conversion method can easily convert solar energy into storable chemical energy, electrical energy and other convenient energy sources. Graphite carbon nitride (g-C 3 N 4 ) is a unique two-dimensional layered material semicon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/082B01J32/00B01J27/24
CPCB01J27/24C01B21/0605C01P2002/72C01P2004/03C01P2004/04
Inventor 于永生刘虎杨微微
Owner HARBIN INST OF TECH
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