Synthesis method and application of titanium dioxide coated metal nano material

A metal nano, titanium dioxide technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, nanotechnology, etc., can solve problems such as difficulty in forming composite nanomaterial structures, and difficulty in controlling the hydrolysis reaction process.

Pending Publication Date: 2021-11-05
曹洋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the hydrolysis reaction rate of such titanium metal salts and titanium alcohol ester species is very fast, it is difficult to control the hydrolysis reaction process, so it is difficult to form a composite nanomaterial structure

Method used

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  • Synthesis method and application of titanium dioxide coated metal nano material
  • Synthesis method and application of titanium dioxide coated metal nano material
  • Synthesis method and application of titanium dioxide coated metal nano material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 100mg AgNO 3 1. Add 0.02 mL of tetrabutyl titanate into 20 g of glycerol, and stir evenly. Then the solution was transferred to a sealed pressure-resistant autoclave, and reacted at 160° C. for 10 h. After heating and reacting, the reaction kettle was left to cool down to room temperature, and the products generated in the reaction were washed with absolute ethanol, dilute hydrochloric acid, and distilled water respectively to obtain a silver nanorod material coated with a thin layer of titanium dioxide on the surface.

[0040] Such as figure 1 As shown, the Ag-coated TiO was tested by scanning electron microscopy 2 , it was found that a uniform nanorod structure product was generated, and Ag-coated TiO was tested by X-ray diffraction 2, it was found that the material exhibited a strong Ag crystal peak, due to the interface modified TiO 2 The amount is small, no obvious TiO 2 crystallization peak.

[0041] Such as figure 2 As shown, through X-ray photoelectron s...

Embodiment 2

[0044] 100mg AgNO 3 1. Add 0.05 mL of tetrabutyl titanate into 20 g of glycerol, and stir evenly. Then the solution was transferred to a sealed pressure-resistant autoclave, and reacted at 160° C. for 12 h. After heating and reacting, the reaction kettle was left to cool down to room temperature, and the products generated in the reaction were washed with absolute ethanol, dilute hydrochloric acid, and distilled water respectively to obtain a silver nanorod material coated with a thin layer of titanium dioxide on the surface.

Embodiment 3

[0046] 100mg AgNO 3 1. Add 0.01 mL of tetrabutyl titanate into 20 g of glycerol, and stir evenly. Then the solution was transferred to a sealed pressure-resistant autoclave, and reacted at 160° C. for 10 h. After heating and reacting, the reaction kettle was left to cool down to room temperature, and the products generated in the reaction were washed with absolute ethanol, dilute hydrochloric acid, and distilled water respectively to obtain a silver nanorod material coated with a thin layer of titanium dioxide on the surface.

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PUM

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Abstract

The invention belongs to the technical field of preparation of metal and titanium dioxide composite nano materials, and discloses a synthesis method and application of a titanium dioxide coated metal nano material. According to the method, metal nanoparticles are generated through reaction between metal salt and organic alcohol, water generated through redox reaction of the metal salt and the organic alcohol provides water needed for generating titanium dioxide, titanium dioxide layers generated on the surfaces of the metal nanoparticles through hydrolysis reaction can be improved and optimized, and the thickness of the generated titanium dioxide layers is small and is 1-5 nanometers. X-ray crystallography characterization shows that according to the synthesized metal titanium dioxide composite structure, metal is crystallized, and the amount of generated titanium dioxide is small. According to the synthesis method, the metal surface can be coated with a thin layer of titanium dioxide, the structure can be used as a photocatalytic active component for a photocatalytic reaction, and in addition, the corrosion resistance of the metal can be improved. Meanwhile, the thickness of a modification layer of titanium dioxide is small, so that metal keeps catalytic reaction activity and can still serve as a catalyst.

Description

technical field [0001] The invention belongs to the technical field of preparation of metal and titanium dioxide composite nanomaterials, and in particular relates to a synthesis method and application of titanium dioxide-coated metal nanomaterials. Background technique [0002] Silver nanomaterials have excellent carrier transport ability and have important applications in transparent conductive electrodes as flexible devices. At present, the preparation of various silver nanostructures has been well developed, and the technology is relatively mature. Platinum nanoparticles have excellent catalytic activity, and show good affinity with oxides, and can be stably combined with oxides, so they are usually used in combination with titanium dioxide to improve the separation of photogenerated electrons and holes of photocatalysts and improve catalytic reactions. active. Composite materials formed by copper, palladium and other metal nanoparticles and titanium dioxide have also ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/50B01J23/44B01J23/42B01J23/52B01J23/72B22F1/00B22F1/02B22F9/24B82Y30/00B82Y40/00C01B3/04C09K9/00
CPCB01J23/50B01J23/52B01J23/72B01J23/42B01J23/44B01J35/004B01J35/0073C01B3/042C09K9/00B22F9/24B82Y40/00B82Y30/00Y02E60/36
Inventor 曹洋
Owner 曹洋
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