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Super-long platinum tellurium mesoporous nano-tube electrocatalyst and preparation method thereof

An electrocatalyst, tellurium mesoporous technology, applied in the field of ultra-long platinum tellurium mesoporous nanotube electrocatalyst and its preparation, can solve the problems of mesoporous metal irregularity, complexity, high temperature, etc., and achieve outstanding activity and stability, The effect of simple preparation method and high application prospect

Inactive Publication Date: 2019-03-12
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mesoporous metals obtained in this way usually only have a network structure or random morphology
And these synthetic steps require a multi-step, complex, highly corrosive, oil-phase, high-temperature process

Method used

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  • Super-long platinum tellurium mesoporous nano-tube electrocatalyst and preparation method thereof
  • Super-long platinum tellurium mesoporous nano-tube electrocatalyst and preparation method thereof
  • Super-long platinum tellurium mesoporous nano-tube electrocatalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A preparation method of ultra-long platinum-telluride mesoporous nanotube electrocatalyst, said method comprising the steps of:

[0040] 1) Dissolve 0.092g of sodium tellurite and 1g of PVP in 35.22mL of water under magnetic stirring, then add 1.43mL of hydrazine hydrate and 3.35mL of ammonia water, mix well; place the reaction solution in a high-pressure reactor at 180°C for reaction 3 hours; after the reaction is completed, cool to room temperature, centrifuge with acetone, and wash with water three times to obtain tellurium nanowires; disperse the synthesized tellurium nanowires in 15 mL of water for later use;

[0041] 2) Potassium platinite with a concentration of 20mM and ascorbic acid solution with a concentration of 0.1M were prepared respectively;

[0042] 3) Dissolve 20mg of surfactant F127 in 2mL of potassium platinite solution, then add 0.2mL of tellurium nanowires and 2mL of ascorbic acid solution; the mixture is stirred and reacted at 25°C for 2 hours; aft...

Embodiment 2

[0046] A preparation method of ultra-long platinum-tellurium mesoporous nanotube oxygen reduction catalyst, said method comprising the steps of:

[0047] 1) Dissolve 0.092g of sodium tellurite and 1g of PVP in 35.22mL of water under magnetic stirring, then add 1.43mL of hydrazine hydrate and 3.35mL of ammonia water, mix well; place the reaction solution in a high-pressure reactor at 180°C for reaction 3 hours; after the reaction is completed, cool to room temperature, centrifuge with acetone, and wash with water three times to obtain tellurium nanowires; disperse the synthesized tellurium nanowires in 15 mL of water for later use;

[0048] 2) Potassium platinite with a concentration of 20mM and ascorbic acid solution with a concentration of 0.1M were prepared respectively;

[0049] 3) Dissolve 20mg of surfactant PVP in 2mL of potassium platinite solution, then add 0.2mL of tellurium nanowires and 2mL of ascorbic acid solution; the mixture is stirred and reacted at 25°C for 2 h...

Embodiment 3

[0053] A preparation method of ultra-long platinum-tellurium mesoporous nanotube oxygen reduction catalyst, said method comprising the steps of:

[0054] 1) Dissolve 0.5g of sodium tellurite and 3g of PVP in 50mL of water under magnetic stirring, then add 5mL of hydrazine hydrate and 5mL of ammonia water, and mix well; place the reaction solution in an autoclave at 200°C for 5 hours; After the reaction is completed, cool to room temperature, centrifuge with acetone, and wash with water three times to obtain tellurium nanowires; disperse the synthesized tellurium nanowires in 30 mL of water for later use;

[0055] 2) Potassium platinite with a concentration of 50mM and ascorbic acid solution with a concentration of 0.5M were prepared respectively;

[0056] 3) Dissolve 30mg of surfactant F127 in 5mL of potassium platinite solution, then add 1mL of tellurium nanowires and 5mL of ascorbic acid solution; the mixture is stirred and reacted at 60°C for 5 hours; after the reaction is ...

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Abstract

The invention discloses a super-long platinum tellurium mesoporous nano-tube electrocatalyst and a preparation method thereof. The method includes the steps: preparing a tellurium nano-wire, dispersing the synthesized tellurium nano-wire into 10-30mL of water for standby application; matching potassium platinum oxide with the concentration of 1-50mM and ascorbic acid solution with the concentration of 0.01-0.5M; dissolving 10-50mg of F127 in 1-5mL of potassium platinum oxide solution, and adding 0.1-1mL of tellurium nano-wires and 1-5mL of ascorbic acid solution; stirring mixed solution for 1-5 hours at the temperature of 20-60 DEG C; washing, centrifuging and drying mixture after reaction to obtain the super-long platinum tellurium mesoporous nano-tube electrocatalyst. According to the electrocatalyst and the preparation method of the electrocatalyst, a preparation process is simple, reaction time is short, and a material prepared at normal temperature and under normal pressure has excellent electrochemical oxidation-reduction performance.

Description

(1) Technical field [0001] The invention relates to an ultra-long platinum-telluride mesoporous nanotube electrocatalyst and a preparation method thereof. The catalyst can be used for research on electrochemically catalyzed oxidation-reduction reactions. (2) Background technology [0002] Proton exchange membrane fuel cells can convert chemical energy stored in organic matter and hydrogen into electrical energy, which has great potential to replace fossil fuels. Due to the wide operating voltage range, proton membrane fuel cells have been widely developed in various applications, such as portable computers, new energy vehicles, and small power stations. However, catalysts largely play a crucial role in the performance of PEMFCs, such as lifetime and energy effects. Among the particularly common catalysts for redox reactions, noble metal catalysts, especially platinum nanomaterial catalysts, have received extensive attention. It is generally believed that the precise contro...

Claims

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Application Information

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IPC IPC(8): B01J27/057H01M4/92
CPCH01M4/925B01J27/0576B01J35/33Y02E60/50
Inventor 王鸿静尹淑丽王自强许友薛海荣王亮
Owner ZHEJIANG UNIV OF TECH
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