Visible light response photocatalysis material Ag@Ag3VO4 and preparation method thereof

A photocatalytic material and visible light technology, applied in the direction of chemical instruments and methods, separation methods, physical/chemical process catalysts, etc., can solve the problems of many steps, complicated operations, high energy consumption, etc., and achieve simple preparation methods, low cost, The effect of reducing the recombination rate

Inactive Publication Date: 2012-06-20
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These synthetic methods all have the disadvantages of complex operation, numerous steps, and high energy consumption.

Method used

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  • Visible light response photocatalysis material Ag@Ag3VO4 and preparation method thereof
  • Visible light response photocatalysis material Ag@Ag3VO4 and preparation method thereof
  • Visible light response photocatalysis material Ag@Ag3VO4 and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Take 0.1mol / L NaVO 4 Solution 30ml, slowly drop into 30.9ml 0.3mol / L AgNO 3 In the solution, stir while adding dropwise, continue magnetic stirring for 10 minutes after the drop is complete, add 1mol / L NaOH solution to adjust the pH to 8.0, stir at the same time during the adjustment process, the AgNO in the solution 3 :NaVO 4 =3.09:1 molar ratio, after pH adjustment, continue to stir for 30 minutes, then pack into a 100ml polytetrafluoroethylene reactor with a filling degree of 80% volume ratio, and put it in an oven at 180°C for 24 hours. After the reaction, it was naturally cooled to room temperature, filtered with suction, washed repeatedly with deionized water and ethanol three times, and dried in an oven at 60°C for 12 hours. Micronano powder material AgAg 3 VO 4 , electron microscope photo as figure 1 As shown, the diameter of the silver vanadate particles is 6.5-7.5 μm, and the diameter of the silver particles deposited on the surface is 5-25 nm. figure 2...

Embodiment 2

[0034] 0.1mol / L NaVO 4 Solution 30ml, slowly drop into 30.0ml 0.3mol / L AgNO 3 In the solution, stir while adding dropwise. After the drop is completed, stir magnetically for 10 minutes. Add 1mol / L NaOH solution to adjust the pH to 6.5. Stir at the same time during the adjustment process. The AgNO in the solution 3 :NaVO 4 =3:1 molar ratio, after the pH adjustment, continue to stir for 30 minutes, then put it into a 100ml polytetrafluoroethylene reactor with a filling degree of 80% volume ratio, and put it in an oven at 170°C for 20 hours. After the reaction, cool down to room temperature naturally, filter with suction, wash with deionized water and ethanol repeatedly for 3 times, and dry in an oven at 60°C for 10 hours. The obtained sample is Ag 3 VO 4 ,exist figure 2 , image 3 AgAg 3 VO 4 comparison.

Embodiment 3

[0036] 0.1mol / L NaVO 4 Solution 30ml, slowly drop into 31.5ml 0.3mol / L AgNO 3 In the solution, stir while adding dropwise. After the drop is completed, stir magnetically for 10 minutes. Add 1mol / L NaOH solution to adjust the pH to 8.0. Stir at the same time during the adjustment process. The AgNO in the solution 3 :NaVO 4 =3.15:1, after pH adjustment, continue to stir for 30 minutes, then pack into a 100ml polytetrafluoroethylene reactor, fill 70%, and put it into an oven at 180 degrees Celsius for 24 hours. After the reaction, it was naturally cooled to room temperature, filtered with suction, washed repeatedly with deionized water and ethanol three times, and dried in an oven at 60°C for 12 hours. Got AgAg 3 VO 4 .

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Abstract

The invention relates to a visible light responsive photocatalysis material Ag@Ag3VO4 and a preparation method thereof. The Ag@Ag3VO4 photocatalysis material is of a near-spherical composite structure of depositing silver nano granules on the surfaces of silver vanadate granules, wherein the silver vanadate granules have the diameter of 6.5-7.5 mu m, and the surface deposited nano granules have the particle size of 5-25 nm. The invention also provides a preparation method of Ag@Ag3VO4. According to the invention, silver is deposited and loaded on the surface of Ag3VO4, thus the photocatalysis performance of Ag3VO4 is farther improved; and the method has the advantages of simple method, mild reaction conditions, convenience for operation, low energy consumption and the like.

Description

technical field [0001] The invention relates to a micro-nano photocatalytic material AgAg 3 VO 4 The invention and a preparation method thereof belong to the field of micro-nano photocatalytic powder material synthesis. Background technique [0002] In recent years, with the development of the economy, energy and environmental problems have become increasingly prominent. Environmental pollution has brought great harm to human production and life, especially the pollution of water resources has endangered human health. Feasible solutions are urgently needed. method to treat sewage. The traditional method of water pollution control has the disadvantages of high energy consumption, complicated equipment, high cost, and easy to cause secondary pollution. Therefore, the development of a new, efficient and practical environmental protection treatment technology has become a research hotspot. With the deepening of research, it has been found that semiconductor heterogeneous pho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/68C02F1/30B01D53/86B01D53/72A62D3/10C02F101/38C02F101/30A62D101/43
Inventor 展杰王刚
Owner SHANDONG UNIV
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