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Silver-silver phosphate-zinc oxide ternary heterogeneous composite structure and preparation method thereof

A composite structure, silver phosphate technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as unfavorable materials optoelectronic advantages, unfavorable photo-generated carrier transport, and reduced catalytic activity, etc. Achieve good electron transport properties, superior photocatalytic activity, and broad spectral absorption effects

Inactive Publication Date: 2016-05-04
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, most of the existing multi-component heterogeneous composite structures are obtained by in-situ deposition technology, but there are certain problems in such composite structures.
First of all, layer-by-layer cladding materials have certain requirements on the thickness of the cladding layer. Too thick a cladding layer may limit the exchange and transportation of substances in the reaction and the utilization rate of light energy, which is not conducive to the optoelectronic advantages of different materials; Secondly, due to structural design defects, the contact surface between the metal and the semiconductor is narrow, which is not conducive to the transport of photogenerated carriers, thus reducing the catalytic activity of the material; at the same time, the utilization of light energy in the reported multi-component materials is mainly concentrated in the ultraviolet In the visible range, the utilization rate of light energy in the infrared band is low

Method used

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  • Silver-silver phosphate-zinc oxide ternary heterogeneous composite structure and preparation method thereof
  • Silver-silver phosphate-zinc oxide ternary heterogeneous composite structure and preparation method thereof
  • Silver-silver phosphate-zinc oxide ternary heterogeneous composite structure and preparation method thereof

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Effect test

Embodiment 1

[0020] The preparation method of silver-silver phosphate-zinc oxide ternary heterogeneous composite structure adopts the following steps:

[0021] (1) Take appropriate amount of ethylene glycol (about 6 milliliters) and join in the round bottom flask of 25 milliliters, heat to 160 degrees Celsius, and keep 1 hour at this temperature. Subsequently, 6 milliliters of ethylene glycol solutions of 0.2 mol / L polyvinylpyrrolidone were quickly added, stirred for a while, and 4 mL of silver nitrate (0.15 mol / L) ethylene glycol solutions were added dropwise. The reaction can be carried out for 120 minutes at 160°C. After the product was cooled to room temperature, it was transferred to a 50 ml centrifuge tube, and centrifuged at a speed of 4000 rpm in a centrifuge to remove impurities. Subsequently, they were repeatedly ultrasonically washed and centrifuged with acetone and secondary water for 3-4 times to obtain pure silver nanorods ( figure 1 A). Transfer about 3 milliliters of the...

Embodiment 2

[0023] The preparation method of silver-silver phosphate-zinc oxide ternary heterogeneous composite structure adopts the following steps:

[0024] (1) Take appropriate amount of ethylene glycol (about 6 milliliters) and join in the round bottom flask of 25 milliliters, heat to 160 degrees Celsius, and keep 1 hour at this temperature. Subsequently, 6 milliliters of ethylene glycol solutions of 0.2 mol / L polyvinylpyrrolidone were quickly added, stirred for a while, and 4 mL of silver nitrate (0.15 mol / L) ethylene glycol solutions were added dropwise. The reaction can be carried out for 120 minutes at 160°C. After the product was cooled to room temperature, it was transferred to a 50 ml centrifuge tube, and centrifuged at a speed of 4000 rpm in a centrifuge to remove impurities. Subsequently, the acetone and secondary water were used to repeatedly ultrasonically wash and centrifuge for 3-4 times to obtain pure silver nanorods. Transfer about 3 milliliters of the prepared Ag nan...

Embodiment 3

[0026] The preparation method of silver-silver phosphate-zinc oxide ternary heterogeneous composite structure adopts the following steps:

[0027](1) Take appropriate amount of ethylene glycol (about 6 milliliters) and join in the round bottom flask of 25 milliliters, heat to 160 degrees Celsius, and keep 1 hour at this temperature. Subsequently, 6 milliliters of ethylene glycol solutions of 0.2 mol / L polyvinylpyrrolidone were quickly added, stirred for a while, and 4 mL of silver nitrate (0.15 mol / L) ethylene glycol solutions were added dropwise. The reaction can be carried out for 120 minutes at 160°C. After the product was cooled to room temperature, it was transferred to a 50 ml centrifuge tube, and centrifuged at a speed of 4000 rpm in a centrifuge to remove impurities. Subsequently, the acetone and secondary water were used to repeatedly ultrasonically wash and centrifuge for 3-4 times to obtain pure silver nanorods.

[0028] (2) Get about 3 milliliters of the Ag nanor...

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Abstract

The present invention relates to a silver-silver phosphate-zinc oxide ternary heterogeneous composite structure and a preparation method thereof. The preparation method is as below: synthesizing silver nanorods by using ethylene glycol as a solvent; depositing silver phosphate on the surface of silver nanorods by a solution co-precipitation method byusing silver nanorods as a template to obtain a silver-silver phosphate composite structure; and finally, growing zinc oxide nanorod arrays with broad-band gap on the silver phosphate surface through a seed growth method to obtain the silver-silver phosphate-zinc oxide ternary composite structure product. The product prepared by the present invention has a ternary heterogeneous composite structure; silver nanorods are used as the core, silver phosphate grows and coats on the silver nanorods, and zinc oxide nanorods grow on the silver phosphate shells; and the silver nanorods have diameter of about 500 nanometers, the silver phosphate is in an amorphous shape, and the size of zinc oxide nanorods is controllable.

Description

technical field [0001] The invention relates to a silver-silver phosphate-zinc oxide ternary heterogeneous composite structure and a preparation method thereof, in particular to a silver-silver phosphate-zinc oxide ternary heterogeneous composite structure and a preparation method thereof. Background technique [0002] Nanomaterials with multiple heterogeneous composite structures have novel physical and chemical properties that single nanomaterials do not have. Therefore, the single material can be modified to make it have better performance, so it has broad application prospects in many fields. "PerformanceofmagneticallyRecoverableCore- shellFe3O4Ag3PO4 / AgClforPhotocatalyticRemovalofmethyleneBlueunderSimulatedSolarLight” [Guo, X.; Chen. N. and Feng. C.P. Catalysis Communications, 38, 26–30. (2013)]. Among them, noble metal-semiconductor heterocomposites are currently a research hotspot in the field of nanomaterials due to their unique optical, electrical, and magnetic prop...

Claims

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Application Information

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IPC IPC(8): B01J27/18
CPCB01J27/1817B01J35/396B01J35/39B01J35/40B01J35/33
Inventor 金超杨金虎秦瑶祖连海罗安
Owner TONGJI UNIV
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