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Preparation method and application of foam transition metal phosphide carrying noble metal

A transition metal and phosphide technology, which is applied in the field of electrocatalysis and electrochemical sensors, can solve the problems of few active sites and low electrocatalytic oxidation activity of glucose, and achieve enhanced catalytic activity, accelerated electron transfer rate, and increased specific surface area. big effect

Active Publication Date: 2017-12-15
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Noble metal platinum or palladium is the most commonly used electrode material in enzyme-free glucose sensors, but the electrocatalytic oxidation activity for glucose is not very high due to fewer active sites

Method used

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  • Preparation method and application of foam transition metal phosphide carrying noble metal
  • Preparation method and application of foam transition metal phosphide carrying noble metal
  • Preparation method and application of foam transition metal phosphide carrying noble metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method for foamed nickel phosphide supported palladium, carried out according to the following steps:

[0024] Step 1. Soak the nickel foam in a hydrochloric acid solution with a mass fraction of 20%, and ultrasonically treat it for 10 minutes to remove the oxide layer on the surface, then use ultrapure water to wash it to neutral, and finally dry it for use; follow the protective gas (step In the airflow direction of the argon in the second), the red phosphorus powder and the foamed nickel whose surface has been removed from the oxide layer are respectively placed in the upstream area and the downstream area of ​​the porcelain boat, and the mass ratio of the red phosphorus powder to the foamed nickel is 2:1;

[0025] Step 2. Place the porcelain boat prepared in step 1 in the center of the tube annealing furnace, feed argon gas as a protective atmosphere, and ventilate for 60 minutes to exhaust the air in the tube furnace cavity;

[0026] Step 3. Under the...

Embodiment 2

[0029] A preparation method for foamed copper phosphide loaded platinum, carried out according to the following steps:

[0030] Step 1. Soak the copper foam in a hydrochloric acid solution with a mass fraction of 10%, and ultrasonically treat it for 5 minutes to remove the oxide layer on the surface, then use ultrapure water to wash it to neutral, and finally dry it for later use; follow the airflow of the protective gas Direction, the red phosphorus powder and the foamed copper whose surface is removed from the oxide layer are respectively placed in the upstream area and the downstream area of ​​the porcelain boat, and the mass ratio of the red phosphorus powder to the foamed copper is 1:1;

[0031] Step 2. Place the porcelain boat prepared in step 1 in the center of the tube annealing furnace, feed argon gas as a protective atmosphere, and ventilate for 30 minutes to exhaust the air in the tube furnace cavity;

[0032] Step 3. Under the protection of argon, first raise the t...

Embodiment 3

[0035] A preparation method for foamed iron phosphide loaded platinum, carried out according to the following steps:

[0036] Step 1. Soak the foam iron in a hydrochloric acid solution with a mass fraction of 5%, and ultrasonically treat it for 5 minutes to remove the oxide layer on the surface, then use ultrapure water to wash it until it is neutral, and finally dry it for later use, and follow the airflow of the protective gas Direction, the red phosphorus powder and the foamed iron whose surface is removed from the oxide layer are respectively placed in the upstream area and the downstream area of ​​the porcelain boat, and the mass ratio of the red phosphorus powder to the foamed iron is 3:1;

[0037] Step 2. Place the porcelain boat prepared in step 1 in the center of the tube annealing furnace, feed nitrogen gas as a protective atmosphere, and ventilate for 60 minutes to exhaust the air in the tube furnace cavity;

[0038] Step 3. Under the protection of nitrogen, first r...

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Abstract

The invention relates to the technical field of electrochemical sensors and the field of electro-catalysis, in particular to a preparation method and application of a foam transition metal phosphide carrying noble metal. The preparation method comprises the following steps: putting a foam transition metal into a tubular annealing furnace, placing red phosphorus powder at an uptake, wherein under gas flow driving of protective gas, phosphorus steam can be in contact with a test sample and react with the test sample, thus generating a three-dimensional multihole transition metal phosphide carrier; by adopting a three-electrode system in which the foam transition metal phosphide, a Pt slice and a saturated calomel electrode are respectively used as a working electrode, an auxiliary electrode and a reference electrode, applying constant working voltage, and finally preparing a self-supporting three-dimensional foam transition metal phosphide carrying noble metal nano particle electrode which is used for performing enzyme-free detection on glucose and has high activity and low detection limit.

Description

technical field [0001] The invention relates to the technical field of electrochemical sensors and the field of electrocatalysis, in particular to a preparation method and application of a foamed transition metal phosphide loaded noble metal. Background technique [0002] Glucose is an extremely important substance in organisms. The detection and analysis of glucose is of great significance to human health and the diagnosis, treatment and control of diseases. [0003] At present, there are many methods widely used in the detection of glucose, such as spectrophotometry, fluorescence detection, chemiluminescence, electrochemical analysis and so on. Among them, the electrochemical analysis method has high sensitivity, less sample amount, simple instrument and relatively cheap price, and has gradually become a very competitive glucose detection method. Electrochemical sensors are divided into enzymatic glucose electrochemical sensors and enzyme-free glucose electrochemical sens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/26
CPCG01N27/26G01N27/30
Inventor 王孝广王美马自在孟会杰张飞
Owner TAIYUAN UNIV OF TECH
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