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Method for preparing platinum nanometer perforated electrodes with electrodeposition

A porous electrode and platinum nanotechnology, applied in the field of material preparation and electrochemical detection, can solve the problems of disappearance of glucose response signal, unsuitable for mass production, complex electrode preparation methods, etc., and achieve easy implementation, small quantity, and good catalytic effect Effect

Inactive Publication Date: 2008-11-12
EAST CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2. Pt 2 Pb[4] alloy electrode can detect glucose without enzymes under neutral conditions, but if the measurement object contains 0.1M sodium ions, the response signal of glucose completely disappears;
However, the preparation method of the electrode is complex, time-consuming, and costly, which is not suitable for mass production

Method used

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  • Method for preparing platinum nanometer perforated electrodes with electrodeposition
  • Method for preparing platinum nanometer perforated electrodes with electrodeposition
  • Method for preparing platinum nanometer perforated electrodes with electrodeposition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In the first step, the substrate 21 of the working electrode 2 is a platinum disc; in the third step, the constant voltage provided by the electrochemical workstation 1 is 70 mV, the average deposition thickness of the PtCu alloy film 22 is 100 nm, and the electrodeposition time is 4min.

Embodiment 2

[0034] Except for the following differences, the rest are the same as in Example 1.

[0035] In the third step, the constant voltage provided by the electrochemical workstation 1 was 60 mV, and the electrodeposition time was 5 min.

Embodiment 3

[0037] Except for the following differences, the rest are the same as in Example 1.

[0038] In the third step, the constant voltage provided by the electrochemical workstation 1 was 80 mV, and the electrodeposition time was 3 min.

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PUM

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Abstract

The invention discloses a method for preparing platinum nano-porous electrode by electrodeposition, which pertains to the technical field of material preparation and electrochemical detection. The method includes that: a layer of platinum alloy is deposited on a substrate of a working electrode by electrodeposition, and then the substrate is carried out inverse alloying by electrochemical etching, so as to form the platinum nano-porous electrode. The method of the invention has the advantages that: a high quality platinum nano-porous electrode can be obtained, with the surface area improved by over 500 times than that of a planar electrode and has good catalytic effect, which can completely satisfy the requirements of measuring glucose without enzyme; the preparation steps of the electrode is simple, with small quantity of reagent, low cost and easy operation; and the operation can be conducted under normal temperature, which has no danger of high temperature and is safe and environment protective.

Description

technical field [0001] In the technology of non-enzyme detection of glucose, platinum nanoporous electrodes are often used as working electrodes. The invention relates to a method for preparing platinum nanoporous electrodes by electrodeposition, and belongs to the technical field of material preparation and electrochemical detection. Background technique [0002] At present, there are several electrochemical sensing blood glucose meters made by the catalysis of glucose oxidase on the domestic and foreign markets, which are used to detect blood sugar in diabetic patients. Although glucose oxidase is the most stable of all biological enzymes, it is still affected and limited by various conditions in the surrounding environment, such as temperature, humidity, oxygen concentration, etc. In mass production, the quantity of enzyme and the fastness of enzyme immobilization are difficult to control, so the repeatability and reproducibility of the sensor are greatly affected. As a...

Claims

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Application Information

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IPC IPC(8): G01N27/327G01N33/48
Inventor 王依婷朱自强张健朱建中
Owner EAST CHINA NORMAL UNIVERSITY
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