A kind of carbon nitride/kaolinite composite material and its preparation method and application

A composite material, kaolinite technology, applied in chemical instruments and methods, chemical/physical processes, special compound water treatment, etc. degree of effect

Active Publication Date: 2019-07-30
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method usually takes more than ten days, the process is complex and cumbersome, the resource consumption is high, and it is difficult to achieve large-scale production

Method used

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  • A kind of carbon nitride/kaolinite composite material and its preparation method and application
  • A kind of carbon nitride/kaolinite composite material and its preparation method and application
  • A kind of carbon nitride/kaolinite composite material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Step 1: Measure dimethyl sulfoxide and deionized water and mix together a total of 100 mL into a beaker, the ratio of which is 10:1 (mass ratio).

[0042] Step 2. Weigh 10g of kaolinite and add it to the above mixed solvent, and stir it in a water bath at 60°C for 4 hours to obtain a viscous turbid liquid. After cooling to room temperature, wash it repeatedly with deionized water and absolute ethanol. intercalation solvent (the total washing time is 2 h), and the washed sample is dried at 60° C. for 24 h to obtain kaolinite intercalated with dimethyl sulfoxide.

[0043] Step 3: Weigh 1 g of kaolinite intercalated with dimethyl sulfoxide, grind it with 5 g of urea and 0.5 mL of deionized water for 15 min, and then keep it at 95° C. for 12 h to obtain kaolinite intercalated with urea.

[0044] Step 4: Put the kaolinite intercalated with urea into the crucible and cover it tightly with a lid, then put the crucible into the muffle furnace for roasting, cool down to room tem...

Embodiment 2

[0048] Step 1: Measure dimethyl sulfoxide and deionized water and mix together a total of 100 mL into a beaker, the ratio of which is 10:1 (mass ratio).

[0049] Step 2. Weigh 10g of kaolinite and add it to the above mixed solvent, and stir it in a water bath at 60°C for 4 hours to obtain a viscous turbid liquid. After cooling to room temperature, wash it repeatedly with deionized water and absolute ethanol. intercalation solvent (the total washing time is 1.5 h), and the washed sample was dried at 60° C. for 24 h to obtain kaolinite intercalated with dimethyl sulfoxide.

[0050] Step 3: Weighing 1 g of kaolinite intercalated with dimethyl sulfoxide, grinding it with 10 g of urea and 0.5 mL of deionized water for 15 minutes, and then keeping it at 95° C. for 12 hours to obtain kaolinite intercalated with urea.

[0051] Step 4: Put the kaolinite intercalated with urea into the crucible and cover it tightly with a lid, then put the crucible into the muffle furnace for roasting, ...

Embodiment 3

[0055] Step 1: Measure dimethyl sulfoxide and deionized water and mix together a total of 100 mL into a beaker, the ratio of which is 10:1 (mass ratio).

[0056] Step 2. Weigh 10g of kaolinite and add it to the above mixed solvent, and stir it in a water bath at 60°C for 4 hours to obtain a viscous turbid liquid. After cooling to room temperature, wash it repeatedly with deionized water and absolute ethanol. intercalation solvent (the total washing time is 2 h), and the washed sample is dried at 60° C. for 24 h to obtain kaolinite intercalated with dimethyl sulfoxide.

[0057] Step 3: Weigh 1 g of kaolinite intercalated with dimethyl sulfoxide, grind it with 15 g of urea and 0.5 mL of deionized water for 15 minutes, and then keep it at 95° C. for 12 hours to obtain kaolinite intercalated with urea.

[0058] Step 4: Put the kaolinite intercalated with urea into the crucible and cover it tightly with a lid, then put the crucible into the muffle furnace for roasting, cool down to...

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Abstract

The invention discloses a carbon nitride / kaolinite composite material as well as a preparation method and application thereof. In the carbon nitride / kaolinite composite material, carbon nitride is distributed onto the surface and inside of the kaolinite; cyano groups are carried on the carbon nitride and / or kaolinite. The kaolinite is used as raw materials; the urea intercalated kaolinite is firstly prepared; then, the carbon nitride / kaolinite composite material is prepared by a roasting one-step method. The designed and prepared carbon nitride / kaolinite composite material contains defect state carbon nitride and cyano groups distributed onto the surface of the kaolinite and / or carbon nitride; through the groups and the defects, when the obtained product is used for photocatalytic decomposition of organic matters, the excellent catalyst performance and circulation use performance are shown. The substances have the reasonable structural design; the preparation process is simple; the control is easy; the obtained product has excellent performance; the large-scale industrial production and application are convenient.

Description

technical field [0001] The patent of the invention belongs to the field of non-metallic mineral materials, and specifically relates to a carbon nitride / kaolinite composite material and its preparation method and application. Background technique [0002] With the rapid development of social industry, the discharge of industrial wastewater is increasing day by day, and the resulting environmental problems have attracted widespread attention. As a green and environmentally friendly method, catalytic technology has potential application value in solving environmental problems. Catalysts are the core of catalytic technology. Semiconductor catalysts can effectively degrade organic pollutants in sewage because of their green and mild characteristics. [0003] Kaolinite is rich in reserves in my country and has become an important natural non-metallic mineral resource, but the added value of natural kaolinite is low, and there are few basic researches on the deep processing and ap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24C02F1/00C02F1/30C02F101/30C02F101/34C02F101/38
CPCB01J27/24B01J35/004C02F1/00C02F1/30C02F2101/308C02F2101/34C02F2101/38C02F2101/40C02F2305/10
Inventor 杨华明赵啟行欧阳静张毅傅梁杰
Owner CENT SOUTH UNIV
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