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Graphene oxide/silver molybdate co-doped silver phosphate composite nanometer photochemical material, and preparation method and application thereof

A technology of nanocomposite materials and silver molybdate, applied in the field of nanomaterials, can solve the problems of no research on the degradation of phenols and antibiotics, and achieve good degradation efficiency

Inactive Publication Date: 2018-05-18
ZHENJIANG COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent application document with the publication number CN102580739A reports a graphene / silver molybdate composite visible light catalyst and its preparation method, which can effectively degrade organic dyes, but there is no research on the degradation of phenols and antibiotics in industrial wastewater

Method used

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  • Graphene oxide/silver molybdate co-doped silver phosphate composite nanometer photochemical material, and preparation method and application thereof
  • Graphene oxide/silver molybdate co-doped silver phosphate composite nanometer photochemical material, and preparation method and application thereof
  • Graphene oxide/silver molybdate co-doped silver phosphate composite nanometer photochemical material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (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 formed;

[0027] 0.28 g of graphene oxide was added to the above solution, and the graphene oxide-silver ammonia mixed solution was formed after continuous stirring for 10 h under the condition of avoiding light.

[0028] (2) 0.015mol NaH 2 PO 4 with 0.005mol Na 2 MoO 4 Dissolve in 50mL of deionized water, ultrasonicate for 1h to form a mixed solution, then add 0.5g (2g / L) cetyltrimethylammonium bromide to the above solution, and continue magnetic stirring for 3h.

[0029] Under the condition of maintaining magnetic stirring, the above solution was added dropwise to the mixed solution in step (1), and the dropping speed 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 final...

Embodiment 2

[0031](1) Add 15% ammonia solution dropwise to 50 mL of AgNO with a concentration of 1 mol / L 3 In the solution, silver ammonia solution is formed;

[0032] 60 mg of graphene oxide was added to the above solution, and the graphene oxide-silver ammonia mixed solution was formed after continuous stirring for 10 h under the condition of avoiding light.

[0033] (2) 0.01mol(NH 4 ) 2 HPO 4 With 0.0015mol (NH4) 2 MoO 4 Dissolve in 50mL of deionized water, sonicate for 1h to form a mixed solution, then add polyethylene glycol 0.4g (0.8g / L) to the above solution, and continue magnetic stirring for 3h. Under the condition of maintaining magnetic stirring, the above solution was added dropwise to the solution in step (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 dr...

Embodiment 3

[0035] (1) Add 20% ammonia solution dropwise to 60 mL of AgNO with a concentration of 1 mol / L 3 In the solution, silver ammonia solution is formed;

[0036] 80 mg of graphene oxide was added to the above solution, and the graphene oxide-silver ammonia mixed solution was formed after continuous stirring for 10 h under the condition of avoiding light.

[0037] (2) 0.015molNa 2 HPO 4 (0.3mol / L) and 0.005mol MoO 3 (0.1mol / L) was dissolved in 50mL of deionized water, and a mixed solution was formed after ultrasonication for 1h, then 0.5g (1g / L) of polyvinylpyrrolidone was added to the above solution, and magnetic stirring was continued for 3h.

[0038] Under the condition of maintaining magnetic stirring, the above solution was added dropwise to the solution in step (1), and the dropping rate was controlled at 2 drops / s. After the reaction was complete, the stirring was continued for 6 hours, and the obtained dark green precipitate was repeatedly washed and centrifuged with eth...

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Abstract

The invention discloses a graphene oxide / silver molybdate co-doped silver phosphate composite nanometer photochemical material, and a preparation method and application thereof. The matrix material ofthe composite nanometer photochemical material is silver phosphate, and the reinforcing phases of the composite nanometer photochemical material are graphene oxide and silver molybdate. The compositenanometer photochemical material comprises, by mass, 1 to 10% of graphene oxide and 10 to 25% of silver molybdate, with the balance being Ag<3>PO<4>. The preparation method comprises the following steps: (1) preparation of a graphene oxide / silver-ammonia solution; and (2) synthesis of a graphene oxide / silver molybdate / silver phosphate compound: dropwise adding a mixed solution of phosphate, a molybdenum source and a surfactant and carrying out a simple solution reaction so as to synthesize the graphene oxide / silver molybdate / silver phosphate compound. Thus, the photocatalysis performance andstability of silver phosphate are improved, and high yield is realized.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to a graphene oxide and silver molybdate co-modified silver phosphate composite nano photocatalyst, a preparation method and an application thereof. Background technique [0002] Semiconductor photocatalysis technology has become a new type of green technology to solve the current two problems of environmental pollution and energy shortage due to its unique properties such as fast reaction rate, high efficiency and direct use of solar energy to drive the reaction. Silver-based semiconductor materials represented by Ag3PO4 have developed into a highly efficient photocatalyst for degrading pollutants in wastewater and photodegrading water to produce oxygen due to their excellent performance. As reported in related literature, Ag3PO4 decomposes aquatic products under visible light. Quantum efficiencies as high as 90% have been shown for oxygen and photocatalytic degradation of organic dyes...

Claims

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Application Information

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IPC IPC(8): B01J27/19B01J37/03C01B13/02C02F1/30C02F101/34C02F101/38
CPCC01B13/0207C02F1/30B01J23/002B01J27/19B01J37/035C02F2305/10C02F2101/345C02F2101/38C02F2101/34B01J35/39B01J35/23B01J35/399
Inventor 唐国钢
Owner ZHENJIANG COLLEGE
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