Preparation method of silver nano-dendrites

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...

AI Technical Summary

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 harm to experimenters, but also bring harm to the environment, so we need to find an operation Simple, precise control, low cost, and environmentally friendly method

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