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Preparation method of strong-coupling type attapulgite-KHX-g-C3N4 composite material

A technology of attapulgite and composite materials, which is applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problem that the catalytic activity cannot meet the large-scale application, and achieves good loading effect and firm loading. , the effect of low cost of raw materials

Active Publication Date: 2016-12-07
HUAIYIN TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, photogenerated electrons and holes are easy to recombine, making g-C 3 N 4 The catalytic activity cannot meet the needs of large-scale applications

Method used

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  • Preparation method of strong-coupling type attapulgite-KHX-g-C3N4 composite material
  • Preparation method of strong-coupling type attapulgite-KHX-g-C3N4 composite material
  • Preparation method of strong-coupling type attapulgite-KHX-g-C3N4 composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: ATT-KH550-g-C is synthesized according to the following steps 3 N 4 -0.5 composite material:

[0016] (a) Weigh 3g of attapulgite and 100mL of toluene into the four-necked flask in turn, stir evenly, heat up to 60°C, after 0.5h, add 2.5mL KH550 while stirring, stir for 4 hours, and the reaction product is separated by filtration After that, it was washed with toluene and absolute ethanol in sequence, and dried at 60°C to obtain ATT-KH550, which was ground and passed through a 200-mesh (74 μm) sieve for later use;

[0017] (b) Weigh 0.302g ATT-KH550 and disperse it in 100mL deionized water, ultrasonically disperse; then add 0.601g melamine, stir, condense and reflux at 80°C for 2h; then freeze-dry for 48h, grind and add to the quartz boat, and the quartz The boat was placed in a tube furnace, and the temperature was programmed in the tube furnace under an air atmosphere. The temperature rise program was as follows: room temperature was raised to 500 °C fo...

Embodiment 2

[0029] Embodiment 2: ATT-KH560-g-C is synthesized according to the following steps 3 N 4 -0.25 Composite:

[0030] (a) Weigh 3g of attapulgite and 100mL of toluene into the four-necked flask in turn, stir evenly, heat up to 60°C, after 0.5h, add 2.5mL of KH560 while stirring, stir for 4 hours, and the reaction product is separated by filtration After that, it was washed with toluene and absolute ethanol in sequence, and dried at 60°C to obtain ATT-KH560, which was ground and passed through a 200-mesh (74 μm) sieve for later use;

[0031] (b) Weigh 0.302g ATT-KH560 and disperse it in 100mL deionized water, ultrasonically disperse; then add 1.208g melamine, stir, condense and reflux at 80°C for 2h; then freeze-dry for 48h, grind and add to the quartz boat, and the quartz boat Placed in a tube furnace, the temperature was programmed to rise in the tube furnace under the air atmosphere. The temperature rise program was as follows: at room temperature, the temperature was raised ...

Embodiment 3

[0032] Embodiment 3: ATT-KH570-g-C is synthesized according to the following steps 3 N 4 -0.5 composite material:

[0033] (a) Weigh 3g of attapulgite and 100mL of toluene into the four-necked flask in turn, stir evenly, raise the temperature to 60°C, after 0.5h, add 2.5mL KH570 while stirring, stir for 4 h, and the reaction product is separated by filtration After that, it was washed with toluene and absolute ethanol in sequence, and dried at 60°C to obtain ATT-KH570, which was ground and passed through a 200-mesh (74 μm) sieve for later use;

[0034] (b) Weigh 0.302g ATT-KH570 and disperse it in 100mL of deionized water, ultrasonically disperse; then add 0.601g melamine, stir, condense and reflux at 80°C for 2h; then freeze-dry for 48h, grind and add to the quartz boat, and the quartz The boat was placed in a tube furnace, and the temperature was programmed to rise in the tube furnace under an air atmosphere. The temperature rise program was as follows: at room temperature...

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Abstract

The invention discloses a preparation method of a strong-coupling type attapulgite-KHX-g-C3N4 composite material. The preparation method comprises the following steps: adding attapulgite and toluene with the weight which is 30 to 40 times as much as that of the attapulgite into a four-neck flask in sequence; uniformly stirring and raising the temperature to 60 DEG C; after 0.5h, adding a certain amount of a silane coupling agent while stirring to react for 4h; after filtering and separating a reaction product, washing the reaction product with the toluene and absolute ethyl alcohol in sequence; drying at 105 DEG C to obtain KHX modified attapulgite; grinding and sieving by a 200-mesh (74mu.m) sieve for later use; weighing a certain amount of the modified attapulgite and dispersing the modified attapulgite into de-ionized water with the weight which is 200 to 300 times as much as that of the modified attapulgite; carrying out ultrasonic dispersion and adding a certain amount of melamine; stirring and condensing and reflowing at 80 DEG C for 2h; freeze drying for 48h; after grinding, adding an obtained mixture into a quartz boat; adding the quartz boat into a tubular furnace and carrying out programmed temperature rising under the air atmosphere; keeping for 2h, and then naturally cooling; sufficiently grinding a product into powder to obtain the attapulgite-KHX-g-C3N4 composite material. The strong-coupling type attapulgite-KHX-g-C3N4 composite material disclosed by the invention has a good catalytic performance, and cost reduction and pollution reduction can also be realized, so that the strong-coupling type attapulgite-KHX-g-C3N4 composite material has relatively good application prospect and economic benefits.

Description

technical field [0001] The invention belongs to attapulgite (ATT) modified with silane coupling agent (KHX=KH550, KH560, KH570) Phase carbon nitride (g-C 3 N 4 ) to form a chemical bond to realize g-C 3 N 4 Uniform loading on the surface of attapulgite to prepare strongly coupled attapulgite-KHX-g-C 3 N 4 Composite materials, specifically related to strongly coupled attapulgite-KHX-g-C 3 N 4 Methods of preparation of composite materials. Background technique [0002] Graphite-like carbon nitride (g-C 3 N 4 ) has a graphite-like layered structure and is a polymeric non-metallic semiconductor. In various semiconductor studies, g-C 3 N 4 Due to their excellent chemical stability and unique electronic band structure, they have attracted extensive attention. g-C 3 N 4 The preparation method is simple, the preparation raw materials are cheap and easy to obtain, and can be used as a cheap catalyst in the fields of photocatalytic water splitting to produce hydrogen an...

Claims

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Application Information

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IPC IPC(8): B01J27/24
CPCB01J21/16B01J27/24B01J35/39
Inventor 张莉莉许永帅陈佳琪周守勇赵宜江汪信姚超
Owner HUAIYIN TEACHERS COLLEGE
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