A kind of silver nanometer electrode and preparation method thereof

Abstract

The invention provides a silver nanoelectrode and a preparation method thereof. Compared with the prior art, the silver nanoelectrode and the preparation method thereof have the advantage that the problem that the silver nanoelectrode cannot be prepared through adoption of a laser drawing method is overcome through selection of a glass tube and a metal wire, design of drawing parameters, selectionof an electrode packaging material and selection of electrode polishing parameters. According to the silver nanoelectrode and the preparation method thereof, through utilization of the laser drawingmethod, the silver nanoelectrode with a semidiameter smaller than 50 nm is obtained, a preparation process is simple, a size of the prepared electrode is small, and the cost is relatively low. Compared with other silver electrodes, the electrode prepared by the invention has the advantage of high stability. The prepared silver nanoelectrode is small in size, a mass transfer rate is fast, the detection is sensitive, and an instrument is small, portable and cheap. A state of a silver wire drawing process is observed through adoption of an OLYMPUS biological microscope. The electrode is represented through adoption of methods such as a scanning electron microscope (SEM) and an energy dispersive X-ray spectrometry (EDX). The performance of the silver nanoelectrode itself is researched throughadoption of a cyclic voltammetry.

Description

technical field [0001] The invention belongs to the field of preparation of noble metal electrodes, and in particular relates to a silver nanometer electrode and a preparation method thereof. Background technique [0002] In the past two decades, nanoelectrodes with various shapes have been developed rapidly, especially the preparation of noble metal nanoelectrodes, such as platinum nanodisk electrodes, platinum nanowire electrodes, gold nanodisk electrodes, gold nanowire electrodes and nanopore electrodes. There are many reports on electrodes with other morphology. In terms of its application, these small-sized electrodes are used in electrochemical detection in different environments due to their own materials and geometric shapes, including single particle analyzers, scanning electrochemical microscopy (SECM), atomic force microscopy (AFM) ), electrocatalysis of fuels, analysis of living organisms, dynamic monitoring of single cells and construction of electrochemical DN...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of silver nano-electrode, through the selection of glass tube and metal wire, the design of drawing parameters, the selection of packaging materials of electrodes and the parameter selection of electrode polishing, overcome the problem that cannot be drawn by laser Method for preparing silver nanoelectrodes

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