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Method for preparing gold-nano array electrode

An array electrode, gold nanotechnology, applied in the field of preparation of gold nanoarray electrodes, can solve the problem of no literature report and so on

Inactive Publication Date: 2010-10-06
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no literature report on effective solutions to the above two problems.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The invention uses the polycarbonate filter membrane as a template to prepare gold nanometer array electrodes. The polycarbonate filter membrane is a commercially available commodity, and the following steps are used to prepare gold nanometer array electrodes:

[0024] First, fix the polycarbonate filter membrane on a non-metallic sheet with a certain strength, such as a paper sheet, and fix the paper sheet with a certain strength on the hole on the edge of the polycarbonate filter membrane. During the drilling and fixing process, the thin and soft polycarbonate filter membrane should not be deformed. In the following pretreatment, electroless plating and posttreatment steps, use the paper to ensure that the polycarbonate filter membrane is suspended in the solution, does not stick to the beaker wall, and fully contacts with the solution.

[0025] Then carry out pre-treatment of electroless gold plating. Before electroless gold plating, steps such as sensitization and...

Embodiment 2

[0043] The present invention uses the polycarbonate filter membrane as a template, and the polycarbonate filter membrane is a commercially available commodity, and adopts the following steps to prepare gold nanometer array electrodes:

[0044] (1) Fix the polycarbonate filter membrane on a cardboard with a certain strength to ensure that the polycarbonate filter membrane can be effectively suspended in the solution, not stick to the beaker wall, and fully contact with the solution. Soak the polycarbonate filter membrane in methanol for 5 minutes, supplemented by ultrasonic vibration treatment.

[0045] (2) Put the polycarbonate filter membrane soaked in methanol into SnCl 2 、CF 3 The sensitization pretreatment is carried out in the methanol and water mixture of COOH, and the composition of the sensitization mixture is SnCl 2 0.1M, CF 3 COOH 0.1M, 1:1 (v / v) mixture of methanol and water, supplemented by ultrasonic treatment. The temperature is normal temperature, and the t...

Embodiment 3

[0060] The invention uses a polycarbonate filter membrane as a template, and the polycarbonate filter membrane is a commercial commodity. First, fix the polycarbonate filter membrane on a plastic splint, and ensure that the thin and soft polycarbonate filter membrane is not deformed during the clamping and fixing process. In subsequent pre-treatment, electroless plating and post-treatment steps, use the plastic splint to ensure that the polycarbonate filter membrane is suspended in the solution, does not stick to the beaker wall, and fully contacts with the solution. Then carry out pre-treatment of electroless gold plating. Before electroless gold plating, steps such as sensitization and pre-silvering are required. The specific process of preparing the gold nanoarray electrode is as follows:

[0061] (1) Soak and clean the polycarbonate filter membrane fixed on the plastic splint in methanol for 5 minutes, supplemented by ultrasonic vibration treatment.

[0062] (2) Put the...

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Abstract

The invention relates to a preparation method of gold nanometer array electrode, which the substrate is polycarbonate filter membrane, after the processes of the pretreatment of chemical plating to the polycarbonate filter membrane, chemical plating, chemical plating after acid leaching, such as cleaning and processing, the former treatment, post acid leaching and rinsing, and assisted by the ultrasonic wave process in the steps of pretreatment, acid leaching and rinsing, using degreasing cotton soaked with dilute sodium cyanide to softly wipe the surface of the filter membrane after chemicalplating, then rinsing with methanol, using the combined method of mechanical effect and chemical effect to effectively remove a gold layer on the surface to form the gold nanometer array, then pasting the filter membrane to the collector, assembling into the gold nanometer array electrode. The diameter of a single gold nanometer disk in the array is 10 to 100 nanometers measured by scanning electronic microscope, the component of the array group is pure gold measured with energy dispersive X-ray spectrum. The electrode has the advantages of high mass transfer speed, low double-layer charge current, effectively improving signal-to-noise ratio and the detection limit. The preparation method of gold nanometer array electrode has the advantages of ingenious design, simple operation and good reproduction.

Description

technical field [0001] The invention relates to a preparation method of a nanometer electrode, in particular to a preparation method of a gold nanometer array electrode. Background technique [0002] Nanoelectrode is a type of electrode whose one-dimensional size is nanopole. Due to its small size, it has many advantages compared with conventional size electrodes: it can significantly increase the rate of the mass transfer process, has a very low electric double layer charging current and small time constant and IR drop, etc., which can greatly improve the sensitivity of the measurement And resolution, it can be used to study the mechanism of fast electrochemical reaction that cannot be studied by conventional electrodes. Handling and manipulating individual nanoelectrodes is difficult due to their small size, and requires more sensitive instruments due to their small electrochemical response signals. The nano-array electrode consists of tens of thousands of individual nan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/06C23C18/42C30B29/02C30B7/14G01N27/30
Inventor 曹立新闫培生孙克宁
Owner HARBIN INST OF TECH AT WEIHAI
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