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ATP/g-C3N4-Ag composite material with high visible-light activity, and preparation method and application thereof

A composite material, g-c3n4-ag technology, applied in chemical instruments and methods, light water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as the degradation efficiency needs to be improved, and achieve excellent photoelectric catalytic performance. , Easy to obtain raw materials, good coating effect

Inactive Publication Date: 2017-11-10
HUAIYIN TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Lei Ge et al prepared Ag / g-C by photodecomposition deposition and calcination 3 N 4 Composite material, which has a good degradation effect on methyl orange (MO) under visible light, which is achieved by increasing the g-C 3 N 4 The separation efficiency of the generated photogenerated electrons and holes can be used to improve the photocatalytic performance, but the degradation efficiency needs to be improved.

Method used

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  • ATP/g-C3N4-Ag composite material with high visible-light activity, and preparation method and application thereof
  • ATP/g-C3N4-Ag composite material with high visible-light activity, and preparation method and application thereof
  • ATP/g-C3N4-Ag composite material with high visible-light activity, and preparation method and application thereof

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preparation example Construction

[0038] Another aspect of the present invention provides a preparation method for this material. The first step is the modification of attapulgite: mix attapulgite with an organic solvent, then add a silane coupling agent for modification, and the product is washed and dried Finally, the modified attapulgite is obtained; the second step is to load g-C 3 N 4 Preparation of the attapulgite: Disperse the modified attapulgite in deionized water, then add melamine for reflux reaction, freeze-dry the reaction solution and grind it, and then calcinate the ground product to obtain the loaded g-C 3 N 4 of attapulgite; step 3, loading of Ag: will load g-C 3 N 4 The attapulgite was dispersed in deionized water, and AgNO was added dropwise 3 solution, and NaBH was added dropwise 4 The solution was reacted and the product was filtered off and dried to obtain ATP / g-C 3 N 4 -Ag composite material.

[0039] In the first step described, the organic solvent is toluene; the silane couplin...

Embodiment 1

[0046] Embodiment 1: ATP / g-C is synthesized according to the following steps 3 N 4 -Ag-2 composite material:

[0047] (a) Weigh 12.0g of attapulgite and 140mL of toluene into the four-neck flask in turn, stir at 60°C for 0.5 h, add 10mL of KH560, and react at constant temperature for 4 h under stirring, then wash with toluene and absolute ethanol in sequence, And dry at 60°C to obtain ATP-KH560. (b) Weigh 0.400g of ATP-KH560 and ultrasonically disperse in deionized water for 1 hour to obtain solution A. Heat and dissolve 0.800g melamine in deionized water, mix it with solution A and condense and reflux at 80°C for 4h; freeze-dry the mixed solution after cooling to room temperature for 24h, grind and roast at 520°C in an air atmosphere to obtain ATP / g-C 3 N 4 Thin layer material. (c) Weigh 0.400g ATP / g-C 3 N 4 Thin layer material was dispersed in deionized water, after ultrasonic dispersion for 1h, 0.643mL 0.01g / mL AgNO was added dropwise 3 solution, after stirring for ...

Embodiment 2

[0048] Embodiment 2: ATP / g-C is synthesized according to the following steps 3 N 4 -Ag-4 composite material:

[0049] (a) Weigh 6.0g of attapulgite and 70mL of toluene into the four-neck flask in turn, stir at 60°C for 0.5 h, add 5mL of KH560, and react at constant temperature for 4 h under stirring, then wash with toluene and absolute ethanol in turn, And dry at 60°C to obtain ATP-KH560. (b) Weigh 0.800g of ATP-KH560 and ultrasonically disperse in deionized water for 1 hour to obtain solution A. Heat and dissolve 1.600g of melamine in deionized water, mix it with solution A and condense and reflux at 80°C for 4h; freeze-dry the mixed solution for 24h after cooling to room temperature, grind and roast at 520°C in an air atmosphere to obtain ATP / g-C 3 N 4 Thin layer material. (c) Weigh 0.800gATP / g-C 3 N 4 After ultrasonic dispersion in deionized water for 1 h, 2.625 mL of 0.02 g / mL AgNO was added dropwise 3 solution, after stirring for 1h, add 3.333 mL 0.06g / mL NaBH dro...

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Abstract

The invention discloses an ATP / g-C3N4-Ag composite material with high visible-light activity, and a preparation method and application thereof. According to the invention, attapulgite having undergone coating modification by a g-C3N4 thin layer is used as a substrate; Ag nano-particles are deposited on the prepared ATP / g-C3N4 thin layer in situ via a chemical reduction method; and due to good synergism among attapulgite, the g-C3N4 thin layer and the Ag nano-particles, the novel efficient stable ATP / g-C3N4-Ag composite material is obtained. The composite material prepared in the invention presents excellent photocatalysis performance, can reduce cost and pollution and has good application prospects and economic benefits in treatment of water pollution.

Description

technical field [0001] The invention belongs to the field of composite materials, in particular to a high visible light activity ATP / g-C 3 N 4 -A preparation method of the Ag composite material. Background technique [0002] With the rapid development of modern industry, the problem of energy crisis and environmental pollution is becoming more and more serious. It is an important topic in the field of environment to seek more cost-effective pollution control technology. Because of its strong oxidation ability, mild reaction conditions and no secondary pollution, semiconductor photocatalysis technology has attracted wide attention from all walks of life and has become an ideal environmental treatment technology. Semiconductor materials like graphitic carbon nitride (g-C 3 N 4 ) because of its visible light response (band gap Eg is 2.7eV), non-toxicity, high photocatalytic activity, etc., and the preparation process is simple, and the preparation raw materials are cheap ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/30A62D3/17C02F101/38A62D101/28
CPCA62D3/17C02F1/30B01J27/24C02F2305/10C02F2101/40A62D2101/28B01J35/39
Inventor 张莉莉许永帅陈佳琪付永胜周守勇赵宜江汪信
Owner HUAIYIN TEACHERS COLLEGE
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