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Nitrogen-doped carbon nanotube-loaded Pt catalyst based on eutectic solvent, preparation method and application thereof

A technology of deep eutectic solvent and nitrogen-doped carbon, applied in electrochemical generators, final product manufacturing, sustainable manufacturing/processing, etc., to achieve excellent electrochemical performance, simple process, and good application prospects

Active Publication Date: 2018-11-23
GUANGXI NORMAL UNIV
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  • Application Information

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Problems solved by technology

However, the above-mentioned N-doped carbon nanotube materials are all prepared by chemical vapor deposition (CVD) or N-containing small molecule substances (such as ammonia, urea, melamine) as precursors, etc., through deep eutectic solvent (DES ) One-step solvothermal treatment of carbon nanotubes to prepare N-doped carbon nanotube composites and apply them to fuel cell anode electrocatalyst supports has not yet been reported in literature and patents

Method used

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  • Nitrogen-doped carbon nanotube-loaded Pt catalyst based on eutectic solvent, preparation method and application thereof
  • Nitrogen-doped carbon nanotube-loaded Pt catalyst based on eutectic solvent, preparation method and application thereof
  • Nitrogen-doped carbon nanotube-loaded Pt catalyst based on eutectic solvent, preparation method and application thereof

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Embodiment

[0019] refer to figure 1 , a method for preparing a nitrogen-doped carbon nanotube-loaded Pt catalyst based on a deep eutectic solvent, comprising the steps of:

[0020] 1) Add 20 mg of acidified multi-walled carbon nanotubes MWCNTs into a container with 20 mL of deep eutectic solvent, sonicate for 1 hour at room temperature, then magnetically stir for 1 hour, transfer to a 25 mL reaction kettle, and react at 110°C-230°C After 1 hour to 10 hours, the obtained product is centrifuged, washed and vacuum-dried to obtain nitrogen-doped MWCNTs composite material (N-MWCNTs);

[0021] 2) Add 10mg nitrogen-doped MWCNTs and 19.3mM H in 20mL ethylene glycol at a certain mass ratio (Pt / nitrogen-doped MWCNTs=1 / 4) 2 PtCl 6 The solution was ultrasonically treated for 2 hours and then transferred into a 25mL reactor, and reacted at 90°C-200°C for 24 hours. After the reaction product was centrifuged, washed and vacuum-dried, a nitrogen-doped MWCNTs supported Pt catalyst (Pt / N-MWCNTs) was obt...

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Abstract

The invention discloses a nitrogen-doped carbon nanotube-loaded Pt catalyst based on a eutectic solvent, a preparation method and application thereof. The method comprises the following steps: 1) taking choline chloride / urea eutectic solvent as a medium, and processing MWCNTs through a solvothermal method to prepare nitrogen-doped MWCNTs composite material; 2) then, depositing Pt nano particles by taking the nitrogen-doped MWCNTs as a carrier, so as to prepare the nitrogen-doped MWCNTs-loaded Pt catalyst. The method is simple in process, mild and environment-friendly in operation process andlow in cost; the prepared Pt nano particle catalyst is excellent in electrochemical performance and has a good application prospect. The Pt nano-particle catalyst prepared by the method can improve the electrocatalytic activity and stability of methanol oxidation, and the CO poisoning resistant capability.

Description

technical field [0001] The invention relates to the fields of electrocatalysis and fuel cells, in particular to a nitrogen-doped carbon nanotube-supported Pt catalyst based on a deep eutectic solvent, a preparation method and application thereof. Background technique [0002] The high cost and slow reaction kinetics of electrocatalysts have been the key factors restricting the development of electrocatalysis-related fields (such as fuel cells, electrochemical sensing, etc.). Therefore, how to improve the utilization efficiency and electrocatalytic performance of the noble metal Pt in the catalyst has received extensive attention. The dispersion, utilization efficiency and reactivity of the noble metal Pt nanoparticles in the electrocatalyst are closely related to the catalyst support and its surface properties. At present, various carbon nanomaterials such as carbon black, carbon nanotubes, carbon nanofibers, and graphene are widely used as carrier materials for anode electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92H01M4/88H01M8/1011
CPCH01M4/88H01M4/926H01M8/1011Y02E60/50Y02P70/50
Inventor 樊友军黄聪聪项胜唐华果钟静萍李丽
Owner GUANGXI NORMAL UNIV
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