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Preparation method of mesoporous graphite-phase carbon nitride material

A graphite phase carbon nitride and mesoporous technology, applied in the direction of nitrogen and non-metallic compounds, can solve the problems of large sheet thickness and small specific surface area, and achieve the effect of improving activity, large specific surface area, and broadening the application field

Inactive Publication Date: 2015-06-10
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

g-C prepared by conventional methods 3 N 4 Most of them are in the form of layers and blocks, with small specific surface area and large sheet thickness, which limits the g-C 3 N 4 Applications

Method used

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  • Preparation method of mesoporous graphite-phase carbon nitride material
  • Preparation method of mesoporous graphite-phase carbon nitride material
  • Preparation method of mesoporous graphite-phase carbon nitride material

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as Figure 5 Shown, a kind of preparation method of mesoporous graphite phase carbon nitride material comprises the following steps:

[0031] (1) Weigh 10 g of nano colloidal SiO 2 Put into 5 g concentration and be in the cyanamide aqueous solution of 50 wt%, stir 4 h at room temperature and make it fully mix;

[0032] (2) Let the mixed solution in step (1) stand, remove the supernatant and dry it in an oven at 60°C to obtain a white solid;

[0033] (3) Grind the white solid obtained in step (2), place it in a muffle furnace for calcination at 500 °C for 6 h, and then grind it to obtain a light yellow powder;

[0034] (4) Disperse the light yellow powder obtained in step (3) in 400 mL of NH with a concentration of 2 mol / L 4 HF 2 Stir in the solution for 64 h, wash with deionized water and ethanol once, and dry at 70 °C for 1 h to obtain mpg-C 3 N 4 Material.

[0035] The mpg-C prepared by embodiment 1 3 N 4 Material, observed by Fourier transform infrared ...

Embodiment 2

[0037] Such as Figure 5 Shown, a kind of preparation method of mesoporous graphite phase carbon nitride material comprises the following steps:

[0038] (1) Weigh 30 g of nano colloidal SiO 2 Put into 10 g concentration and be in the cyanamide aqueous solution of 50 wt%, stir 2 h at room temperature and make it fully mix;

[0039] (2) Let the mixed solution in step (1) stand, remove the supernatant and dry in an oven at 50°C to obtain a white solid;

[0040] (3) Grind the white solid obtained in step (2), place it in a muffle furnace for calcination at 550 °C for 4 h, and then grind it to obtain a light yellow powder;

[0041] (4) Disperse the light yellow powder obtained in step (3) in 200 mL of NH with a concentration of 4 mol / L 4 HF 2 Stir in the solution for 48 h, wash twice with deionized water and ethanol, and dry at 50 °C for 2 h to obtain mpg-C 3 N 4 Material.

[0042] With the material prepared by the method of embodiment 2, after X-ray diffractometer scannin...

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Abstract

The invention discloses a preparation method of a mesoporous graphite-phase carbon nitride material. The material is prepared by using a monocyanamide water solution as a raw material and nano colloid SiO2 as a template by a hard template process. The preparation method comprises the following steps: adding nano colloid oxidized SiO2 into a monocyanamide water solution, stirring uniformly, drying and calcining to obtain light yellow powder; putting the powder into an NH4HF2 solution, and stirring to remove the SiO2 template; and washing, and drying to obtain the mesoporous graphite-phase carbon nitride (mpg-C3H4) material. Compared with the common blocky graphite-phase carbon nitride (g-C3H4) material, the mesoporous graphite-phase carbon nitride (mpg-C3H4) material has larger specific area, and thus, has better catalytic effect on thermal decomposition of ammonium perchlorate. The preparation method has the advantages of simple technical operation, wide raw material sources and high preparation efficiency.

Description

technical field [0001] The present invention relates to a kind of mesoporous graphite phase carbon nitride (mpg-C 3 N 4 ) material preparation method, which belongs to the field of material preparation and energetic materials. Background technique [0002] Graphite-like carbon nitride (g-C 3 N 4 ) because of its special physical and chemical properties, has attracted extensive attention of scientific researchers, and has broad application prospects in the fields of photocatalysis, solar energy utilization, environmental protection, heterogeneous catalysis, etc. Functional Materials. However, g-C 3 N 4 The pore structure and specific surface of the material greatly affect its performance. Generally speaking, g-C 3 N 4 The higher the specific surface area, the more active sites are provided and the better the catalytic performance. g-C prepared by conventional methods 3 N 4 Most of them are in the form of layers and blocks, with small specific surface area and large...

Claims

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Application Information

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IPC IPC(8): C01B21/082
Inventor 谈玲华徐建华寇波杭祖圣王善斌颜松周家明
Owner NANJING INST OF TECH
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