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Method for quickly preparing quasi-graphite-structure carbon nitride material by adopting microwave heating

A technology of graphite structure and carbon nitride, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of time-consuming and energy-consuming, and achieve simple process, high-efficiency and rapid preparation, and high-degradation organic The effect of pollutant performance

Inactive Publication Date: 2015-03-18
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above process is very time-consuming and energy-consuming. In order to meet the needs of future industrial applications, it is very urgent to develop a fast, energy-saving and efficient process for preparing carbon nitride.

Method used

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  • Method for quickly preparing quasi-graphite-structure carbon nitride material by adopting microwave heating
  • Method for quickly preparing quasi-graphite-structure carbon nitride material by adopting microwave heating
  • Method for quickly preparing quasi-graphite-structure carbon nitride material by adopting microwave heating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Rapid preparation of graphite-like structure carbon nitride material by microwave heating

[0033] Weigh 6g of urea into a 25mL alumina crucible, cover the 25mL crucible mouth-to-mouth with a 50mL alumina crucible, and then seal the junction of the two crucibles with aluminum silicate felt. Put the sealed crucible containing urea into a 200mL large alumina crucible, then bury the crucible containing urea with copper oxide, react for 18 minutes at a microwave power of 1000W, take out the buried crucible after cooling, that is Carbon nitride materials are available.

[0034] The XRD diffraction pattern of the carbon nitride material prepared in the present embodiment is as follows figure 1 , indicating that the prepared material is carbon nitride.

[0035] The infrared spectrogram (FT-IR) of the carbon nitride material prepared in the present embodiment is as follows figure 2 As shown, it shows that the prepared material is carbon nitride material.

[0036...

Embodiment 2

[0039] Example 2: Rapid preparation of graphite-like structure carbon nitride material by microwave heating

[0040] Weigh 6g of urea into a 25mL alumina crucible, cover the 25mL crucible mouth-to-mouth with a 50mL alumina crucible, and then seal the junction of the two crucibles with aluminum silicate felt. Put the sealed crucible containing urea into a large alumina crucible of 200mL, then bury the crucible containing urea with copper oxide, react at a microwave power of 660W for 18 minutes, take out the buried crucible after cooling, that is Carbon nitride materials are available.

[0041] The XRD diffraction pattern of the carbon nitride material prepared in the present embodiment is as follows Figure 6 , indicating that the prepared material is carbon nitride.

Embodiment 3

[0042] Example 3: Rapid Preparation of Carbon Nitride with Graphite Structure by Microwave Heating

[0043] Weigh 3g of melamine and put it into a 25mL alumina crucible, cover the 25mL crucible mouth-to-mouth with a 50mL alumina crucible, and then seal the junction of the two crucibles with aluminum silicate felt. Put the sealed crucible containing urea into a 200mL large alumina crucible, then bury the crucible containing urea with copper oxide, react for 15 minutes at a microwave power of 1000W, take out the buried crucible after cooling, that is Carbon nitride materials are available.

[0044] The XRD diffraction pattern of the carbon nitride material prepared in the present embodiment is as follows Figure 7 , indicating that the prepared material is carbon nitride.

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Abstract

The invention relates to a quick, energy-saving and high-yield preparation method of quasi-graphite-structure carbon nitride catalysis materials and application of the materials, belonging to the field of preparation and application of catalysis materials. According to the preparation process, one or multiple nitrogen-rich small organic molecules of urea, melamine, thiourea, cyanamide, dicyanamide, cyanuric chloride and cyanuric acid is / are taken as raw materials, a simple metal substance, a metallic oxide, a metal sulfide and a metal chloride are taken as microwave absorbers, microwave is taken as a heating source, and under the condition of radiation of microwave, the quasi-graphite-structure carbon nitride material can be quickly prepared. The prepared carbon nitride material has a large specific area and crystallinity and has high photocatalytic water decomposition hydrogen production performance and organic pollutant degradation performance. The preparation method provided by the invention is short in time, small in energy consumption, high in production efficiency and simple in process, does not have harsh preparation conditions, is easy to operate and has wide application prospect.

Description

technical field [0001] The invention relates to a rapid, energy-saving and high-yield material synthesis method for preparing graphite-like structure carbon nitride, which belongs to the technical field of catalytic material preparation and application. Background technique [0002] Energy shortage and environmental pollution have become global problems restricting the sustainable development of human society. Photocatalysis can directly use solar energy to decompose water to produce hydrogen and degrade organic pollutants. It has the potential to meet the large-scale industrial use of hydrogen in the future and solve environmental pollution problems. One of the ultimate approaches to energy and environmental issues. Since the technology was discovered in 1972, developed countries in the East and the West have invested a lot of money and manpower, which has led to the rapid development of photocatalytic science. [0003] Over the past 30 years, research on photocatalytic m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02B01J37/34
Inventor 袁玉鹏裘灵光徐更生彭夫敏徐文涛马琳
Owner ANHUI UNIVERSITY
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