Nanometer composite material as well as preparation method and application thereof

A technology of nanocomposite materials and mixed solutions, which is applied in the field of nanomaterials to achieve good degradation efficiency

Inactive Publication Date: 2018-05-25
ZHENJIANG COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However Ag 3 PO 4 The characteristics of slightly soluble in water and poor stability inhibit its wide application, so the development of high stability and high performance Ag 3 PO 4 Matrix composite photocatalytic materials are the current research hotspots in the field of photocatalysis

Method used

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  • Nanometer composite material as well as preparation method and application thereof
  • Nanometer composite material as well as preparation method and application thereof
  • Nanometer composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Add 10% ammonia solution dropwise to 40 mL of AgNO with a concentration of 2 mol / L 3 In the solution, silver ammonia solution is obtained;

[0031] 0.09g g-C 3 N 4 Add above-mentioned silver-ammonia solution, form graphene-silver-ammonia mixed solution after continuous stirring 10h under the condition of avoiding light;

[0032] (2) 0.01mol NaH 2 PO 4 with 0.0012mol Na 2 m o o 4 Dissolve in 50mL of deionized water, sonicate for 1h to form a mixed solution, then add 1g of cetyltrimethylammonium bromide to the solution, and continue magnetic stirring for 3h. Under the condition of maintaining magnetic stirring, the above solution was added dropwise to the graphene-silver ammonia mixed solution in step (1), and the rate of addition was controlled at 2 s / drop. After the reaction was complete, the stirring was continued for 6 hours, the obtained dark green precipitate was repeatedly washed and centrifuged with ethanol and deionized water, and finally the sample w...

Embodiment 2

[0034] (1) Add 10% ammonia solution dropwise to 50mL of AgNO 3 In the solution, the concentration thereof is 1mol / L, and then 0.42g of graphene is added to the above solution, and the graphene-silver ammonia mixed solution is formed after continuous stirring for 10h under the condition of avoiding light.

[0035] (2) 0.01mol(NH 4 ) 2 HPO 4 With 0.002mol (NH4) 2 MoO 4 Dissolve in 50 mL of deionized water, and form a mixed solution after ultrasonication for 1 h, then add 0.4 g of polyethylene glycol to the above solution, and continue magnetic stirring for 3 h. Under the condition of maintaining magnetic stirring, the above solution was added dropwise into the solution (1), and the dropping rate was controlled to be 3 drops / s. After the reaction was complete, the stirring was continued for 6 h, and the obtained dark green precipitate was repeatedly washed and centrifuged with ethanol and deionized water, and finally the sample was placed in a 60 ° vacuum oven and dried over...

Embodiment 3

[0037] (1) Add 10% ammonia solution dropwise to 60mL of AgNO 3 In the solution, the concentration thereof is 1mol / L, and then 0.73g of graphene is added into the above solution, and the graphene-silver ammonia mixed solution is formed after continuous stirring for 10h under the condition of avoiding light.

[0038] (2) 0.01molNa 2 HPO 4 with 0.003mol MoO 3 Dissolve in 50mL of deionized water, sonicate for 1h to form a mixed solution, then add 0.5g of polyvinylpyrrolidone to the above solution, and continue magnetic stirring for 3h. Under the condition of maintaining magnetic stirring, the above solution was added dropwise into the solution (1), and the dropping rate was controlled to be 2 drops / s. After the reaction was complete, the stirring was continued for 6 h, and the obtained dark green precipitate was repeatedly washed and centrifuged with ethanol and deionized water, and finally the sample was placed in a 60 ° vacuum oven and dried overnight for 8 h, and the yield w...

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Abstract

The invention relates to a nanometer composite material as well as a preparation method and application thereof. The composite material is a trinary nanometer compound, wherein an enhancing phase comprises graphitic carbon nitride (g-C3N4) and silver molybdate; the basic ingredient is Ag3PO4, wherein the mass percentage content of the g-C3N4 is 2 to 12 percent; the mass percentage content of the silver molybdate is 10 to 20 percent; the balance is Ag3PO4. The g-C3N4 obtained through solid phase sintering synthesis is uniformly dispersed into a silver ammonia solution to form a g-C3N4 and silver ammonia mixed solution; a dripping mode is used for introducing a mixed solution of phosphate, a molybdenum source and surface active agents; normal temperature reaction is performed for 2 to 4h; products are repeatedly cleaned by deionized water and absolute ethyl alcohol; drying is performed; a finished product is obtained. The photocatalysis performance and the stability of the silver phosphate based composite photocatalysis materials are improved; the yield is high; the application of the material in the fields of industrial waste water treatment through photocatalysis, water producing oxygen decomposition through the photocatalysis and the like can be expanded.

Description

technical field [0001] The invention relates to the field of nanometer materials, in particular to a silver phosphate compound co-modified by carbanitrone and silver molybdate, its preparation method and its use as a nanometer photocatalyst. Background technique [0002] Silver phosphate (Ag 3 PO 4 ) as a typical representative of silver-based photocatalytic materials, due to its narrow band gap energy, strong visible light absorption ability and obvious visible light photocatalytic activity, it is regarded as the most potential for environmental purification and clean energy production using solar energy. One of the photocatalysts. However Ag 3 PO 4 The characteristics of slightly soluble in water and poor stability inhibit its wide application, so the development of high stability and high performance Ag 3 PO 4 Matrix composite photocatalytic materials are the hotspots in the field of photocatalysis. [0003] Currently, Ag 3 PO 4 Based composite photocatalytic mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01D53/86C02F1/30C01B3/04C02F101/34
CPCB01D53/86B01D2255/802B01J27/24B01J35/004C01B3/042C01B2203/1041C02F1/30C02F2101/345C02F2305/10Y02E60/36
Inventor 唐国钢
Owner ZHENJIANG COLLEGE
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