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CuO/mpg-C3N4 composite material as well as preparation method and application thereof

A technology of mpg-c3n4 and composite materials, which is applied in chemical instruments and methods, offensive equipment, chemical/physical processes, etc., can solve problems such as small specific surface area, reduced composite effect, and large sheet thickness to achieve large specific surface area, The effect of widening the application field and high production efficiency

Inactive Publication Date: 2015-05-27
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

traditional block g-c 3 N 4 The specific surface area is small and the sheet thickness is large, which greatly reduces the composite effect

Method used

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  • CuO/mpg-C3N4 composite material as well as preparation method and application thereof
  • CuO/mpg-C3N4 composite material as well as preparation method and application thereof
  • CuO/mpg-C3N4 composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 Preparation of mpg-C 3 N 4

[0035] Weigh 30 g of nano colloidal silica into 10 g of 50 wt% cyanamide aqueous solution, stir at room temperature for 2 h to mix well, and dry at 50 °C for 12 h. The obtained white solid was pulverized, then placed in a muffle furnace for 4 h at 550 °C, and then cooled and ground to obtain a yellow powder sample. Disperse the above powder in 200 mL of NH with a concentration of 4 mol / L 4 HF 2 solution, stirred for 48 h to remove SiO 2 template. Wash twice with deionized water and ethanol, and then vacuum-dry for 2 h to obtain mpg-C 3 N 4 .

[0036] With the material prepared by the method of embodiment 1, after X-ray diffractometer scanning, see figure 1 , prepared mpg-C 3 N 4 and g-C 3 N 4 Same, with graphite-like structure.

[0037] By the material prepared by the method of embodiment 1, observe through transmission electron microscope, see figure 2 , the prepared material is mpg-C with both worm-like pore str...

Embodiment 2

[0038] Embodiment 2 prepares CuO / mpg-C 3 N 4 composite material

[0039] like Figure 7 As shown, a CuO / mpg-C 3 N 4 The preparation method of composite material, comprises the following steps:

[0040] (1) According to the method of Example 1, mesoporous graphite phase carbon nitride (mpg-C 3 N 4 );

[0041] (2) Add 1.9 g of mpg-C prepared in step (1) 3 N 4 Ultrasonic dispersion in 50 ml deionized water for 10 min;

[0042] (3) Add 0.095 g sodium dodecyl sulfonate (C 12 h 25 NaO 3 S) adding to the dispersion obtained in step (2) and continuing ultrasonic dispersion for 10 min;

[0043] (4) 0.3025 g copper nitrate trihydrate (Cu(NO 3 ) 2 ·3H 2 O) Add to the dispersion liquid obtained in step (3) and stir, continuously add 2 mol / L sodium hydroxide solution dropwise during the stirring process, the dropping speed is 2 drop / s, the addition amount is 1.25 ml, and continue stirring for 1 h after completion ;

[0044] (5) Filter and wash the product obtained in ste...

Embodiment 3

[0046] Embodiment 3 prepares CuO / mpg-C 3 N 4 composite material

[0047] like Figure 7 As shown, a CuO / mpg-C 3 N 4 The preparation method of composite material, comprises the following steps:

[0048] (1) According to the method of Example 1, mesoporous graphite phase carbon nitride (mpg-C 3 N 4 );

[0049] (2) Add 0.9 g of mpg-C prepared in step (1) 3 N 4 Ultrasonic dispersion in 50 ml deionized water for 60 min;

[0050] (3) Add 0.045 g sodium dodecyl sulfonate (C 12 h 25 NaO 3 S) adding to the dispersion liquid obtained in step (2) and continuing ultrasonic dispersion for 30 min;

[0051] (4) 0.3025 g copper nitrate trihydrate (Cu(NO 3 ) 2 ·3H 2 O) Add to the dispersion liquid obtained in step (3) and stir, continuously add 0.5 mol / L sodium hydroxide solution dropwise during the stirring process, the dropping speed is 0.5 drop / s, the addition amount is 5 ml, and continue stirring for 3 h after completion ;

[0052] (5) Filter and wash the product obtaine...

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Abstract

The invention discloses a CuO / mpg-C3N4 composite material as well as a preparation method and an application thereof. The composite material is compounded by mpg-C3N4 and nano CuO at the mass ratio of (95:5) to (80:20). The preparation method comprises the following preparation steps: ultrasonically dispersing mpg-C3N4 into an ethanol solution; adding C12H25NaO3S, and further ultrasonically dispersing; adding Cu(NO3)2.3H2O, stirring, and continuously dropwise adding a NaOH solution in the stirring process, and then further stirring and reacting for a certain period of time; and filtering, washing and drying the product, and burning in a tube furnace to obtain the CuO / mpg-C3N4 composite material. Two substances of the CuO / mpg-C3N4 composite material prepared by the method have relatively tight contact, and relatively large specific surface area, so as to display relatively good catalysts effect on thermal decomposition of ammonium perchlorate.

Description

technical field [0001] The invention belongs to the field of material preparation and energetic materials, in particular to a CuO / mpg-C 3 N 4 Preparation method of the composite material and its use for catalytic decomposition of ammonium perchlorate (AP) as CuO / mpg-C with specific morphology 3 N 4 The composite material provides a new approach to provide an efficient catalyst for the thermal decomposition of ammonium perchlorate (AP). Background technique [0002] Ammonium perchlorate (AP) is a high-energy component in composite propellants, and it accounts for about 60% to 80% of the propellant. The combustion performance of AP-containing propellants can be inferred by studying the thermal decomposition characteristics of AP. Studies have shown that metal elements, metal oxides, and composites can reduce the decomposition temperature of ammonium perchlorate or increase the decomposition rate, and have a good catalytic effect on the thermal decomposition of ammonium perc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C06D5/04
Inventor 谈玲华徐建华寇波杭祖圣陈宇颜松吕静
Owner NANJING INST OF TECH
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