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A kind of preparation method of mesoporous graphitic carbon nitride/rectorite composite material

A composite material and rectorite technology is applied in the field of preparation of mesoporous graphitic carbon nitride/rectorite composite materials, which can solve the problems of reduced photocatalytic activity, easy winding and collapse, etc., and achieves easy control of process parameters and environmental protection. Friendly, low-cost effects

Active Publication Date: 2019-06-21
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the g-C of the porous fibrous structure 3 N 4 In practical applications, it is easy to wind and collapse, close the mesoporous channels, reduce the photocatalytic activity, and limit the g-C 3 N 4 Application in water treatment

Method used

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  • A kind of preparation method of mesoporous graphitic carbon nitride/rectorite composite material
  • A kind of preparation method of mesoporous graphitic carbon nitride/rectorite composite material
  • A kind of preparation method of mesoporous graphitic carbon nitride/rectorite composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A mesoporous g-C 3 N 4 The preparation method of / rectorite composite material, its step is:

[0032] 1. Pretreatment of rectorite:

[0033] Take 10g of natural rectorite, soak in distilled water, separate 3 times to remove scum, soak for 24 hours, separate the scum in the upper layer, filter with suction, dry at 50°C, grind, pass through a 200-mesh sieve, and set aside.

[0034] 2. Configuration of dicyandiamide solution:

[0035] Weigh 0.5g of dicyandiamide and dissolve it in 25mL of deionized water, place the mixed solution in an ultrasonic bath and vibrate for 30min at room temperature to obtain a 2% (mass ratio) dicyandiamide solution.

[0036] 3. Preparation of dicyandiamide / rectorite mixture:

[0037] Place the 2% (mass ratio) dicyandiamide solution obtained in step 2 in a water bath at 55° C. and stir for 15 minutes, and slowly add 0.5 g of rectorite obtained in step 1. The suspension was stirred in a water bath at 55°C for 7 hours, and then the stirring was...

Embodiment 2

[0042] A mesoporous g-C 3 N 4 The preparation method of / rectorite composite material, its step is:

[0043] 1. Pretreatment of rectorite:

[0044] Take 10g of natural rectorite, soak in distilled water, separate 3 times to remove scum, soak for 20 or 23 or 26 hours, separate the scum in the upper layer, filter with suction, dry at 45 or 48 or 52 or 55°C, and grind , through a 180 or 210 or 220 mesh sieve, and set aside.

[0045] 2. Configuration of dicyandiamide solution:

[0046] Weigh 1 g of dicyandiamide and dissolve it in 50 mL of deionized water, place the mixed solution in an ultrasonic bath and vibrate for 28 or 31 or 32 min at room temperature to obtain a 2% (mass ratio) dicyandiamide solution.

[0047] 3. Preparation of dicyandiamide / rectorite mixture:

[0048] Place the 2% (mass ratio) dicyandiamide solution obtained in step 2 in a water bath at 55°C or 58 or 62 or 65°C, seal and stir for 10 or 14 or 18 or 20min, and slowly add 0.5g of the reductor obtained in s...

Embodiment 3

[0053] A mesoporous g-C 3 N 4 The preparation method of / rectorite composite material, its step is:

[0054] 1. Pretreatment of rectorite:

[0055] Take 10g of natural rectorite, soak in distilled water, separate 3 times to remove scum, soak for 20 or 22 or 24 or 26 hours, separate the upper layer of scum, filter with suction, and dry at 45 or 48 or 50 or 55°C , ground, passed through a 180 or 190 or 220 mesh sieve, and set aside.

[0056] 2. Configuration of dicyandiamide solution:

[0057] Weigh 2g of dicyandiamide and dissolve it in 100mL of deionized water, place the mixed solution in an ultrasonic bath and vibrate for 28 or 30 or 32min at room temperature to obtain a 2% (mass ratio) dicyandiamide solution.

[0058] 3. Preparation of dicyandiamide / rectorite mixture:

[0059] Place the 2% (mass ratio) dicyandiamide solution obtained in step 2 in a water bath at 55° C. or 59 or 63 or 65° C., seal and stir for 10 or 13 or 17 or 20 minutes, and slowly add 0.5 g of the redu...

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Abstract

The invention discloses a method for preparing a mesoporous graphitic carbon nitride / rectorite composite material. The steps are: 1. Pretreatment of rectorite: take natural rectorite, soak it in distilled water, and separate and remove scum. , filter and grind for later use; 2. Preparation of dicyandiamide solution: Dissolve dicyandiamide in deionized water to obtain dicyandiamide solution; 3. Preparation of dicyandiamide / rectorite mixture: Dissolve dicyandiamide solution in a water bath After stirring, add rectorite, stir, dry, and grind for later use; 4. Preparation of mesoporous graphitic carbon nitride / rectorite composite material: Calculate, wash, and grind the dicyandiamide / rectorite mixture to obtain mesoporous Graphite carbon nitride / rectorite composite. The process is fast and simple, the process parameters are easy to control, the raw materials are cheap, the composite material is efficient and environmentally friendly, and it realizes the loading of semiconductor nanomaterials. It gives full play to the photocatalytic performance of semiconductor materials and solves the problems of easy collapse, entanglement and difficulty in recycling of semiconductor materials.

Description

technical field [0001] The invention relates to the technical field of synthesis of natural clay mineral composite materials, more specifically to a mesoporous graphitic carbon nitride (g-C 3 N 4 ) / rectorite composite material preparation method, the synthesized mesoporous g-C 3 N 4 The / rectorite composite material is environmentally friendly and has visible light response, which can be used for photocatalytic degradation of azo dyes in water and can be used for practical wastewater treatment. Background technique [0002] Graphite carbon nitride (g-C 3 N 4 ) is a two-dimensional layered compound formed by C-N covalent bonds forming atomic layers and stacking layers. g-C 3 N 4 It does not contain metal elements and is a unique semiconductor material. It has stable chemical stability, is not easy to be corroded by light, visible light response and adjustable electronic band structure and other properties. It is considered to be the most potential photocatalytic materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J35/10C02F1/30C02F101/38
CPCC02F1/30B01J27/24C02F2101/40C02F2101/38C02F2101/308C02F2305/10B01J35/613B01J35/39
Inventor 周培疆朱珑珑
Owner WUHAN UNIV