A kind of preparation method of nano platinum titanium electrode

A technology of titanium electrodes and nano-platinum, which is applied in the field of preparation of nano-platinum titanium electrodes, can solve the problems of insufficient bonding between nano-platinum and electrode substrates, high requirements for preparation conditions, and complex preparation systems, and achieve high adsorption capacity of platinum nanometers , The structure of the system is simple and the combination is firm

Active Publication Date: 2021-03-26
中国人民解放军空军勤务学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrochemical method has the problem that the preparation system is relatively complex and the preparation conditions are relatively high.
The above-mentioned preparation methods all have the problem that the combination of nano-platinum and the electrode substrate is not tight, and it is easy to fall off.

Method used

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  • A kind of preparation method of nano platinum titanium electrode
  • A kind of preparation method of nano platinum titanium electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) preparation concentration is the potassium hexachloroplatinate solution of 0.02mM;

[0024] (2) Mechanically polish the pure titanium electrode substrate with metallographic sandpaper, immerse it in boiling ethanol for 10 minutes after polishing, take it out and rinse it with water, and wash it in warm 7:3 (v / v) NH 3 / H 2 o 2 Immerse in the aqueous solution for 10 minutes, then rinse the substrate in pure water three times for 2 minutes each time, and dry in the air;

[0025] (3) Use the pure titanium electrode substrate treated in step (2) as the anode, and the graphite rod as the cathode, immerse in the potassium hexachloroplatinate solution prepared in step (1), apply a microvoltage of 15mV, and let it stand for 20min ;

[0026] (4) Add reducing agent ascorbic acid in solution, make ascorbic acid concentration be 0.04M, keep system reaction time 2 hours;

[0027] (5) The obtained nano-platinum-titanium electrode was placed in a muffle furnace, the heat treatm...

Embodiment 2

[0030] (1) preparation concentration is the potassium hexachloroplatinate solution of 0.06mM;

[0031] (2) Mechanically polish the pure titanium electrode substrate with metallographic sandpaper, immerse it in boiling ethanol for 10 minutes after polishing, take it out and rinse it with water, and wash it in warm 7:3 (v / v) NH 3 / H 2 o 2 Immerse in the aqueous solution for 10 minutes, then rinse the substrate in pure water three times for 2 minutes each time, and dry in a nitrogen stream;

[0032] (3) Use the pure titanium electrode substrate treated in step (2) as the anode, and the graphite rod as the cathode, immerse in the potassium hexachloroplatinate solution prepared in step (1), apply a microvoltage of 40mV, and let it stand for 30min ;

[0033] (4) Add reducing agent ascorbic acid in solution, make ascorbic acid concentration be 0.12M, keep system reaction time 4.5 hours;

[0034] (5) The obtained nano-platinum-titanium electrode was placed in a muffle furnace, the...

Embodiment 3

[0037] (1) preparation concentration is the sodium hexachloroplatinate solution of 0.01mM;

[0038] (2) Mechanically polish the pure titanium electrode substrate with metallographic sandpaper, immerse it in boiling ethanol for 5 minutes after polishing, take it out and rinse it with water, and wash it in warm 7:3 (v / v) NH 3 / H 2 o 2 Immerse in the aqueous solution for 15 minutes, then rinse the substrate in pure water three times for 2 minutes each time, and dry in a nitrogen stream;

[0039] (3) Use the pure titanium electrode substrate that has been surface-treated in step (2) as the anode, and the graphite rod as the cathode, immerse in the sodium hexachloroplatinate solution prepared in step (1), apply a microvoltage of 10mV, and let it stand for 30min ;

[0040] (4) Add reducing agent citric acid in solution, make citric acid concentration be 0.02M, keep system reaction time 1 hour;

[0041] (5) The obtained nano-platinum-titanium electrode was placed in a muffle furn...

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Abstract

The invention discloses a manufacturing method for a nano-platinum-titanium electrode. Firstly, a pure titanium electrode substrate through surface treatment is immersed in a certain concentration ofchloroplatinate ion-containing solution, and a two-electrode system is established and micro-voltage is applied; then, a reductant is added to the solution, and in-situ reduction is carried out on thepure titanium electrode substrate and platinum nanoparticles are deposited; and finally, through high-temperature treatment, a nano-platinum-titanium electrode is obtained. The manufacturing method has the advantages that the manufacturing is fast, the system is simply and conveniently formed, the platinum nano adsorption capacity is strong, the nano platinum is firmly bonded with the electrode substrate, and the manufactured nano-platinum-titanium electrode can withstand strong acid and other harsh environments.

Description

technical field [0001] The invention belongs to the technical field of electrode materials, and relates to a preparation method of a nano-platinum-titanium electrode. Background technique [0002] When platinum and platinum alloys are used as catalysts for various reactions, they have the characteristics of high catalytic performance, high corrosion resistance, and high temperature resistance, and have been widely used in chemical industry, petrochemical industry, automobile exhaust treatment, chemical sensors, fuel cells, Biology, medicine and other fields. Platinum nanomaterials have better application prospects than conventional platinum materials due to their unique physical and chemical properties, such as large specific surface area, strong adsorption capacity, surface reactivity, high catalytic ability, and good electrical conductivity. [0003] The preparation methods of nano-platinum include chemical reduction method, microemulsion method, hydrogen absorption multi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30
CPCG01N27/30
Inventor 郭力胡建强徐新杨士钊
Owner 中国人民解放军空军勤务学院
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