A preparation of a silver carbonate modified molybdenum selenide composite photocatalyst

A technology of molybdenum diselenide and silver carbonate, which is applied in the field of material synthesis and photocatalysis, can solve the problems of molybdenum diselenide photocatalytic efficiency, stability and repeated use, and achieve good photocatalytic activity and catalytic activity improvement Effect

Inactive Publication Date: 2018-09-04
镇江海利新材料科技有限公司
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  • Application Information

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Problems solved by technology

However, the photocatalytic efficiency, stability and reusability of moly

Method used

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  • A preparation of a silver carbonate modified molybdenum selenide composite photocatalyst
  • A preparation of a silver carbonate modified molybdenum selenide composite photocatalyst

Examples

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Embodiment example 1

[0045] Preparation of a silver carbonate-modified molybdenum diselenide composite photocatalyst.

[0046] Weigh Na 2 MoO 4 1.7g, dissolve in 60mL aqueous solution, stir well; then add 1.6g Se powder into the solution, stir well; then add NaBH 4 0.2595g, stir evenly; put the solution into a reaction kettle for hydrothermal reaction, the reaction temperature is 200°C, and the reaction time is 48h. After the reaction is completed, wash by centrifugation, first wash with ethanol for 4 times, then wash with water for 2 times, the centrifugation speed is 10000rpm, and the time is 6min. Finally, dry in an oven at 60°C and grind to obtain molybdenum diselenide.

[0047] Weigh 0.1g of molybdenum diselenide and disperse it in 50mL of water, add 0.616g of silver nitrate, stir evenly; then add 0.191g of sodium carbonate, and ultrasonicate for 1h. The product is centrifugally washed and dried to obtain a silver carbonate-modified molybdenum diselenide composite photocatalyst.

Embodiment example 2

[0049] Silver carbonate-modified molybdenum diselenide composite photocatalyst degrades methyl orange under visible light irradiation.

[0050] The silver carbonate-modified molybdenum diselenide composite photocatalyst prepared by the method of Example 1 was subjected to the experiment of degrading methyl orange. The concentration of methyl orange solution is 1×10 -5 mol L -1 Take 50 mg of composite material powder, place in 100 mL of the above-mentioned methyl orange solution, stir in a dark room for 60 minutes, then place the solution in a visible light source where ultraviolet light is filtered out, take 5 mL of methyl orange solution every 10 minutes, The characteristic peak of methyl orange in the solution was measured by UV-Vis spectrophotometer.

[0051] Obtain the degradation curve of silver carbonate modified molybdenum diselenide composite photocatalyst visible light degradation methyl orange by implementation case 2, see figure 2 . From figure 2 It can be se...

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Abstract

The invention discloses a preparing method of a silver carbonate modified molybdenum selenide composite photocatalyst and an application in treating environment pollutants and belongs to the researchfield of material preparation and photocatalysis. The photocatalyst has characteristics of two dimension feature and is synthesized by the combination of the molybdenum selenide with the two dimensionstructure and silver carbonate nano particles. During the process of preparing the photocatalyst, the silver carbonate modified molybdenum selenide composite photocatalyst is synthesized by adoptingthe hydrothermal method and precipitation method with simple technology. Under the effect of the silver carbonate, the high photocatalysis property is appeared by the silver carbonate modified molybdenum selenide composite photocatalyst, and the application of the molybdenum selenide photocatalyst is promoted.

Description

technical field [0001] The invention belongs to the technical field of material synthesis and photocatalysis, and mainly relates to the preparation of a silver carbonate-modified molybdenum diselenide composite photocatalyst and the research on its photocatalytic activity. Background technique [0002] With the strengthening of people's awareness of environmental protection, the problem of water pollution has received more and more attention. Traditional sewage treatment methods can no longer meet people's requirements. Finding out a clean, efficient, energy-saving and environmentally friendly sewage treatment method has become a hot research direction. [0003] Since the first discovery of TiO in 1972 2 Since it has photocatalytic activity, the research on photocatalytic technology has always been a hot spot in the field of materials. Photocatalytic technology provides a very good solution for sewage treatment by virtue of its advantages of energy saving, environmental p...

Claims

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Application Information

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IPC IPC(8): B01J27/232B01J35/02B01J37/03B01J37/10C02F1/30C02F101/30
CPCB01J27/232B01J35/004B01J35/02B01J37/031B01J37/10C02F1/30C02F2101/308C02F2305/10
Inventor 梁智萍张松利
Owner 镇江海利新材料科技有限公司
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