Preparation method of silver nano-dendrites

A silver nanometer and silver salt technology, which is applied in nanotechnology, metal processing equipment, transportation and packaging, etc., can solve the problems of toxicity, environmental hazards, and injury to experimenters, and achieve low energy consumption, low synthesis cost, and easy operation. Effect

Inactive Publication Date: 2016-11-16
岳佐星
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The synthetic method needs reducing agent, high temperature or surfactant, and some reducing agents such as sodium borohydride are poisonous, which will not only cause

Method used

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  • Preparation method of silver nano-dendrites
  • Preparation method of silver nano-dendrites
  • Preparation method of silver nano-dendrites

Examples

Experimental program
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Embodiment 1

[0036] This embodiment relates to a method for preparing silver nanodendrites, including the following steps:

[0037] (1) Cleaning treatment of copper rods: The copper rods were cleaned with acetone, ethanol, 2mol / L dilute hydrochloric acid, and distilled water under ultrasonic conditions;

[0038] (2) Preparation of silver nanodendrites: Dissolve 0.85 g of silver nitrate in 100 mL of distilled water at room temperature, stir to fully dissolve the monovalent silver salt, and prepare a 0.05 mol / L silver nitrate solution; clean it well The cross-sectional area is 2.5 mm 2 , A copper rod with a length of 4cm is placed in a 5mL test tube, and 1mL of 0.05mol / L silver nitrate solution is dropped into the test tube with a dropper with a plastic tip, and reacted for 50s at room temperature; after the reaction is over, rinse the growth with distilled water The copper rod is dried naturally to obtain the target product.

[0039] The target product obtained in this embodiment is silver nanode...

Embodiment 2

[0041] This embodiment relates to a method for preparing silver nanodendrites, including the following steps:

[0042] (1) Cleaning treatment of copper rods: The copper rods were cleaned with acetone, ethanol, 2mol / L dilute hydrochloric acid, and distilled water under ultrasonic conditions;

[0043] (2) Preparation of silver nanodendrites: Dissolve 0.17 g of silver nitrate in 100 mL of distilled water at room temperature, stir to fully dissolve the monovalent silver salt, and prepare a 0.01 mol / L silver nitrate solution; clean it well The cross-sectional area is 2.5 mm 2 , Put a 4cm copper rod into a 5mL test tube, take 1mL of 0.01mol / L silver nitrate solution and drop it into the test tube with a dropper with a plastic tip, and react for 50s at room temperature; after the reaction is over, rinse the growing black substance with distilled water The copper rod is dried naturally to obtain silver nano-dendrites.

Embodiment 3

[0045] This embodiment relates to a method for preparing silver nanodendrites, including the following steps:

[0046] (1) Cleaning treatment of copper rods: The copper rods were cleaned with acetone, ethanol, 2mol / L dilute hydrochloric acid, and distilled water under ultrasonic conditions;

[0047] (2) Preparation of silver nanodendrites: Dissolve 0.17 g of silver nitrate in 100 mL of distilled water at room temperature, stir to fully dissolve the monovalent silver salt, and prepare a 0.01 mol / L silver nitrate solution; clean it well The cross-sectional area is 2.5 mm 2 , A copper rod with a length of 4cm is placed in a 5mL test tube, and 1mL of 0.01mol / L silver nitrate solution is dropped into the test tube with a dropper with a plastic tip, and reacts for 120s at room temperature; after the reaction is over, rinse the growth of black substances with distilled water The copper rod is dried naturally to obtain silver nano-dendrites.

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Abstract

The invention provides a preparation method of silver nano-dendrites. The preparation method comprises the following steps that (1) a copper bar is washed, specifically, the copper bar is washed with acetone, ethanol, diluted hydrochloric acid and distilled water under ultrasonic conditions correspondingly; and (2) the silver nano-dendrites are prepared, specifically, at room temperature, univalence silver salt is dissolved into distilled water and completely dissolved through stirring, and a solution with the concentration of 0.01-0.1 mol/L is prepared; the cleaned copper bar is placed into a 5 mL test tube, the univalence silver salt solution is dropped into the test tube with a gum cap dropper to conduct a reaction for 5-120 seconds at norm temperature; after completion of the reaction, the copper bar on which black substances grow is washed with the distilled water and is dried naturally in the air, and then nanocrystals are obtained. The preparation method has the advantages of being high in reproducibility, easy and convenient to operate, low in synthesis cost and suitable for industrialized application. The prepared silver nano-dendrites are large in specific surface area and can make full contact with a substance to be tested to make an electro-catalytic reaction sufficient and efficient.

Description

Technical field [0001] The invention relates to a method for preparing silver nano dendrites. Background technique [0002] Silver is an important precious metal material. So far, many Ag nanocrystals have been prepared, such as nanocubes, nanoplates, nanowires, nanorods, and nanoparticles. Among various special nanostructures, Ag nanodendrites have received wide attention because of their large specific surface area, which can provide good connections and make these connections work in a variety of applications, such as biosensors, chemistry Sensors, surface plasmons and super-hydrophobic membranes, with self-assembled delamination and dendritic materials that repeat the superstructure. [0003] The electrochemical sensor has high sensitivity, the lowest analytical detection limit can reach 10~12mol / L, the instrument equipment is relatively simple, the price is low, the debugging and operation of the instrument are relatively simple, easy to realize automation, the amount of reag...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00B82Y40/00
CPCB82Y40/00B22F9/24B22F1/0553B22F1/07B22F1/054
Inventor 岳佐星
Owner 岳佐星
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