Three-dimensional ordered precious metal nanotube array electrode and preparation method thereof

A nanotube array, three-dimensional orderly technology, applied in the direction of nanotechnology, nanotechnology, metal material coating technology, etc., can solve the problems of poor electrical conductivity, unstable contact, etc., and achieve good electrical conductivity and uniform arrangement of array electrodes Orderly, electrochemically stable and reliable effects

Active Publication Date: 2013-09-18
江苏先进无机材料研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the technical problem that the nano-array electrode in the prior art needs to fix the porous membrane on the conductive current collector with conductive glue, etc.—physical contact, not only the contact is not stable, but also the conductivity is poor, and the purpose is to provide a new three-dimensional Ordered Noble Metal Nanotube Array Electrode

Method used

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  • Three-dimensional ordered precious metal nanotube array electrode and preparation method thereof
  • Three-dimensional ordered precious metal nanotube array electrode and preparation method thereof
  • Three-dimensional ordered precious metal nanotube array electrode and preparation method thereof

Examples

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Effect test

Embodiment 1

[0030] Embodiment 1 Gold nanorod short rod array electrode

[0031] Step A) Fixing Porous Membrane

[0032] (1) Cleaning Cut the porous polycarbonate membrane as a template into a circle with a diameter of about 5 mm (such as figure 1 In 2), ultrasonically clean in ethanol for 5 minutes, and then ultrasonically clean in water three times for 5 minutes. Wherein, the specifications of the porous polycarbonate membrane are: the pore diameter is 400 nm, and the membrane thickness is 10 μm.

[0033] (2) Electrode pretreatment The gold disk electrode ( figure 1 1) Grinding and polishing the flocking sheet with W0.5 diamond abrasive paste, and then using Al with a particle size of 0.05 μm 2 o 3 Polish the suspension of suede, and then ultrasonically clean it in ethanol and three times in water for 3 minutes respectively, and set aside.

[0034] (3) Teflon cap for fixing ( figure 1 In 3) the polycarbonate porous membrane cleaned in step (1) ( figure 1 2) fixed on a gold electro...

Embodiment 2 3

[0037] Example 2 Three-dimensional ordered pore wall gold nanotube array electrode

[0038] Fabrication of Gold Nanostub Rod Array Electrodes

[0039] Using the porous polycarbonate film as the template and the gold electrode as the flat base electrode, the gold nanorod short rod array electrode was prepared according to the electrochemical deposition method in Example 1. After the electrochemical deposition was completed, it was fully rinsed with water and absolute ethanol three times. Electrode, let dry.

[0040] Fabrication of three-dimensional ordered pore-walled gold nanotube array electrodes

[0041] (1) Sensitization. Immerse the above-mentioned short gold nanorod array electrodes in SnCl 2 solution, the sensitizer Sn is adsorbed on the surface of the pore wall of the remaining channel part of the porous polycarbonate membrane 2+ At the same time, the surface of the porous membrane will also be adsorbed to a certain extent. The adsorption is maintained at room tempe...

Embodiment 3 3

[0046] Example 3 Three-dimensional ordered gold nanotube array electrode

[0047] 1. Fabrication of Titanium Nanoshort Rod Array Electrodes

[0048] Using the porous polycarbonate film as a template and the titanium electrode as a flat base electrode, prepare a titanium nano-short rod array electrode according to the electrochemical deposition method in Example 1. After the electrochemical deposition is completed, it is fully rinsed with water and absolute ethanol three times in sequence. Electrode, let dry.

[0049] 2. Preparation of three-dimensional ordered pore wall gold nanotube array electrode

[0050] (1) Modification. The titanium nano short rod array electrode prepared in step 1 is immersed in (2-cyanoethyl) triethoxysilane solution, the pore wall surface of the remaining channel part of porous polycarbonate membrane is modified cyano group, simultaneously the porous membrane The surface will also be modified to a certain extent. The modification is kept at room te...

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Abstract

The invention discloses a three-dimensional ordered precious metal nanotube array electrode which comprises a precious metal nanotube array and a plane substrate electrode, wherein the precious metal nanotube array directly grows and fixed on the surface of the plane substrate electrode. The preparation method of the three-dimensional ordered precious metal nanotube array electrode comprises the steps of: fixing a porous membrane on the surface of the electrode, directly growing a nano short array in a pore passage of the porous membrane on the surface of the electrode through electrochemical deposition, continuously depositing an alloy nonotube in the pore passage of the porous membrane through chemical deposition or electrochemical deposition, performing dealloying on an alloy nonotube array electrode, so as to obtain a precious metal nanotube array electrode with holes in the tube wall, and removing a porous membrane template in membrane removal liquid, so as to obtain the three-dimensional ordered precious metal nanotube array electrode integrated with the electrode. The nanotube array directly grows on the substrate electrode, and a hole wall nanotube has a special structure, so that when the array electrode is applied to electrochemical sensor and biosensor research, stable and credible response signals can be obtained.

Description

technical field [0001] The invention specifically relates to a three-dimensional ordered noble metal nanotube array electrode and a preparation method thereof. Background technique [0002] In addition to the characteristics of general nanomaterials, highly oriented nanoarray structure materials also have more excellent properties than disordered nanomaterials, and their properties can be easily controlled by external fields such as electricity, magnetism, and light, so that they can be Become the basis for designing nano-ultraminiature devices. At present, ordered nanostructure materials have begun to be applied in the fields of perpendicular magnetic recording, microelectrode bundles, optoelectronic components, lubrication, sensors, chemical power sources, heterogeneous catalysis, etc. [0003] As one of the nano-array structure systems, the nano-array electrode is an ordered collection of individual nano-electrodes, which retains the unique advantages of nano-electrodes,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B81C1/00B82Y30/00B82Y40/00C25D5/00
Inventor 祝迎春王云丽
Owner 江苏先进无机材料研究院
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