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Method for preparing AgX@g-C3N4 composite photocatalytic material

A technology of agxg-c3n4 and g-c3n4 is applied in the field of preparing AgXg-C3N4 composite photocatalytic materials, which can solve problems such as unreported, and achieve the effect of simple and easy-to-control reaction process, low cost and high visible light catalytic activity.

Inactive Publication Date: 2012-12-26
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While supported by silver halide on g-C 3 N 4 A new type of AgXg-C was prepared on 3 N 4 Composite photocatalytic materials have not been reported so far

Method used

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  • Method for preparing AgX@g-C3N4 composite photocatalytic material

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Weigh 0.026g of g-C 3 N 4 powder, added to 35ml of deionized water, ultrasonicated for 30 minutes, then weighed 0.595g of silver nitrate and dissolved in the above dispersion, and kept stirring for 4 hours. Then, 35ml of KCl aqueous solution with a concentration of 0.1M was slowly added dropwise to the above mixed solution, and the reaction was continued for 24 hours, and the product was washed and dried to obtain the corresponding AgClg-C 3 N 4 Composite photocatalytic materials. Test the AgClg-C 3 N 4 -5% for the photocatalytic properties of methyl orange, as figure 1 shown.

Embodiment 2

[0019] Weigh 0.056g of g-C 3 N 4 powder, added to 9ml of deionized water, ultrasonicated for 1 hour, then weighed 0.459g of silver nitrate and dissolved in the above dispersion, and kept stirring for 4 hours. Then, 9 ml of KBr aqueous solution with a concentration of 0.3 M was slowly added dropwise to the above mixed solution, and the reaction was continued for 18 hours, and the product was washed and dried to obtain the corresponding AgBrg-C 3 N 4 -10% composite photocatalytic material.

Embodiment 3

[0021] Weigh 0.129g of g-C 3 N 4 powder, added to 22ml of deionized water, ultrasonicated for 1 hour, then weighed 0.374g of silver nitrate and dissolved in the above dispersion, and kept stirring for 3 hours. Then, 22ml of KI aqueous solution with a concentration of 0.1M was slowly added dropwise to the above mixed solution, and the reaction was continued for 24 hours, and the product was washed and dried to obtain the corresponding AgIg-C 3 N 4 -20% composite photocatalytic material.

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Abstract

The invention discloses a method for preparing an AgX@g-C3N4 composite photocatalytic material. The method comprises the steps of: firstly treating g-C3N4 with a laminated structure in a silver salt solution under the action of ultrasound so that silver ions are loaded on the surface of the g-C3N4; and adding a halide salt solution to carry out precipitation reaction on the silver ions and halide ions, so as to obtain the AgX@g-C3N4 composite material. The method is low in cost, and simple and easy in preparation process and the visible photocatalytic activity of products is high.

Description

technical field [0001] The present invention relates to a kind of g-C that utilizes halide ion and has lamellar structure 3 N 4 Precipitation reaction between surface-supported silver ions to support silver halide on g-C 3 N 4 AgXg-C 3 N 4 A method for composite photocatalytic materials, specifically involving silver ions in g-C 3 N 4 Surface loading, loading of halide ions and other processes. Background technique [0002] Energy crisis and environmental pollution are major problems faced by mankind in the new century, and photocatalytic technology is of great significance in alleviating or even solving these two problems. As the core of photocatalytic technology, the exploration of photocatalyst becomes the key. [0003] Due to its photosensitivity, silver halides tend to have visible-light responsive properties, however, precisely because of photosensitivity, pure silver halides are often unstable and difficult to use as stable (visible) photocatalysts without othe...

Claims

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Application Information

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IPC IPC(8): B01J27/24
Inventor 赵崇军兰永焕钱秀珍徐云龙张金朝
Owner EAST CHINA UNIV OF SCI & TECH
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