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Method for improving photocatalytic activity of silver phosphate

A catalytic activity, silver light technology, applied in the field of photocatalytic materials, can solve the problems of complex process, time-consuming and labor-intensive, increase production cost, etc., and achieve the effect of simple process, low production cost, and improved photocatalytic performance

Active Publication Date: 2015-12-30
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it must be noted that there are some disadvantages in these two methods: if you want to prepare Ag with new morphology 3 PO 4 , it is often necessary to add a surfactant or a template, which increases the production cost and complicates the process; if the Ag 3 PO 4 Composite with other materials, you need to choose the appropriate composite material, which often requires a lot of experiments for screening, time-consuming and labor-intensive

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  • Method for improving photocatalytic activity of silver phosphate

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Experimental program
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Effect test

Embodiment 1

[0022] First, prepare Na with a concentration of 0.1mol / L 2 HPO 4 solution for later use. Weigh again 0.5g of silver acetate (CH 3 COOAg), added to 300mL of deionized water, using a magnetic stirrer to continuously stir, so that the powdered silver acetate was completely dissolved in deionized water, and then added dropwise with a concentration of 0.1mol / L Na 2 HPO 4 Solution 10mL, a yellow precipitate formed. Then, the obtained yellow precipitate was centrifuged and washed by a high-speed desktop centrifuge, the centrifugation rate was 10000 rad / min, the centrifugation time was 10 min, the washing solvent used for centrifugation was deionized water, and the centrifugation times were 3 times. The obtained solid was then placed in a blast drying oven and dried overnight at 80°C. Finally, the obtained sample was placed in a quartz tube furnace for calcination. During calcination, both ends of the quartz tube were opened, that is, calcined in an air atmosphere. The calcinati...

Embodiment 2

[0024] First, prepare Na with a concentration range of 0.3mol / L 2 HPO 4 solution for later use. Then weigh 1g of silver acetate (CH 3 COOAg), was added to 200mL of deionized water, and was continuously stirred by a magnetic stirrer, so that the powdered silver acetate was completely dissolved in deionized water, and then added dropwise with a concentration of 0.3mol / L Na 2 HPO 4 Solution 20mL, forming a yellow precipitate. Then, the obtained yellow precipitate was centrifuged and washed by a high-speed desktop centrifuge, the centrifugation rate was 12000 rad / min, the centrifugation time was 5 min, the washing solvent used for centrifugation was deionized water, and the centrifugation times were 3 times. The obtained solid was then placed in a blast drying oven and dried overnight at 100°C. Finally, the obtained sample was placed in a quartz tube furnace for calcination. During calcination, both ends of the quartz tube were opened, that is, calcined in an air atmosphere. ...

Embodiment 3

[0026] First, prepare Na with a concentration range of 0.15mol / L 2 HPO4 solution for later use. Then weigh 1g of silver acetate (CH 3 COOAg), was added to 250mL of deionized water, and was continuously stirred by a magnetic stirrer, so that the powdered silver acetate was completely dissolved in deionized water, and then added dropwise with a concentration of 0.15mol / L Na 2 HPO 4 The solution was 13.5 mL, and a yellow precipitate formed. Then, the obtained yellow precipitate was centrifuged and washed by a high-speed desktop centrifuge, the centrifugation rate was 10000 rad / min, the centrifugation time was 10 min, the washing solvent used for centrifugation was deionized water, and the centrifugation times were 3 times. The obtained solid was then placed in a blast drying oven and dried overnight at 80°C. Finally, the obtained sample was placed in a quartz tube furnace for calcination. During calcination, both ends of the quartz tube were opened, that is, calcined in an ai...

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Abstract

The invention discloses a method for improving the photocatalytic activity of silver phosphate. The method comprises the following steps that 1, silver acetate is weighed, deionized water is added in the silver acetate, and stirring is performed to obtain a silver acetate solution; 2, a Na2HPO4 solution is dropwise added in the silver acetate solution to obtain yellow precipitates; 3, centrifugal separating, washing and drying are performed on the yellow precipitates to obtain dry solids; 4, the dry solids are placed in an air atmosphere to be calcined for 2-5 h, and then a final sample is obtained. Compared with the prior art, the method has the advantages that additional and expensive surfactants or template agents do not need to be added, compounding with other semiconductor materials is not needed, the production cost is low, the technology is simple, and the photocatalytic performance of the Ag3PO4 can be significantly improved.

Description

technical field [0001] The invention relates to a method for improving the photocatalytic activity of silver phosphate, which belongs to the technical field of photocatalytic materials. Background technique [0002] Statistics show that people spend more than 80% of their time indoors on average. With the modernization of lifestyle, more work, sports and entertainment activities can be carried out indoors, and shopping does not need to go to the street every day. In this way, people spend more time indoors, even as high as 93%. Therefore, the relationship between indoor air quality and human health seems closer and more important. However, indoor air quality is often worrying, such as formaldehyde, benzene, ammonia and other pollutants emitted by house decoration materials, causing indoor air pollution. Although concentrations of indoor pollutants tend to be low, cumulative exposures are high due to prolonged contact times. Especially for the elderly, the young, the sick,...

Claims

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Application Information

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IPC IPC(8): C01B25/37B01J27/18C02F1/30
Inventor 董鹏玉侯贵华于方丽关荣锋
Owner YANCHENG INST OF TECH
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