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Electrochemical method for catalytic oxidation of methanol with polygonal PtCoFe nano-catalyst

A nano-catalyst and catalytic oxidation technology, which is applied in electrochemical generators, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problems of low catalytic activity, high price, and short life of catalysts, and achieve wide application Prospect, effect of high active site density and excellent electrocatalytic activity

Inactive Publication Date: 2018-03-16
UNIV OF JINAN
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  • Abstract
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Problems solved by technology

[0005] Aiming at the above-mentioned technical problems, the present invention solves the technical problems that current Pt nanostructure catalysts are prone to poisoning, short life, high price, and low catalytic activity of catalysts in the prior art, and prepares a PtCoFe alloy with a polygonal morphology with high-density active sites Nanocatalysts to enhance the methanol electrooxidation performance of Pt nanostructured catalysts

Method used

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  • Electrochemical method for catalytic oxidation of methanol with polygonal PtCoFe nano-catalyst
  • Electrochemical method for catalytic oxidation of methanol with polygonal PtCoFe nano-catalyst
  • Electrochemical method for catalytic oxidation of methanol with polygonal PtCoFe nano-catalyst

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Embodiment 1

[0022] Measure 1.0mL chloroplatinic acid (19.3mmol / L), 4.0mL concentration is the cobalt chloride of 1.66mmol / L and 3.0mL concentration is the iron trichloride aqueous solution of 1.66mmol / L in the 30ml reactor, then add poly Vinylpyrrolidone K30, hexadecyltrimethylammonium bromide CTAB and NaBr are stirred and dissolved with a magnetic stirrer, and then the air in the reactor is exhausted with hydrogen, and 0.8MPa hydrogen is introduced into the reactor, and then heated at 200°C The reaction is carried out under heating, and after the reaction is completed, through ethanol centrifugal washing, freeze-drying and other processing steps to obtain polygonal PtCoFe alloy nanoparticles (such as figure 2 Shown), wherein, the consumption scope of polyvinylpyrrolidone K30 is 210mg, and the consumption scope of cetyltrimethylammonium bromide is 60mg, and the consumption of NaBr is identical with the consumption of cetyltrimethylammonium bromide.

[0023] Methanol fuel cell electro-oxi...

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Abstract

The invention relates to a polyhedral PtCoFe nano-catalyst and study about the electro-catalytic performance thereof on methanol. Prepared polygonal PtCoFe is adopted as the catalyst, the catalyst isprepared from chloroplatinic acid, cobalt chloride and ferric trichloride as the raw materials, PVP is adopted as the reducing agent and protective agent, and CTAB and NaBr of specific content are added to prepare the polygonal PtCoFe nano-catalyst with high selectivity in a hydrogen reducing atmosphere, the preparation method is green and clean, the obtained polygonal PtCoFe alloy catalyst particles have a lot of stepped atoms and high active site density, cyclic voltammetry is employed for methanol electrooxidation testing in 0.5M H2SO4+2M CH3OH electrolyte, the polygonal PtCoFe nano-catalyst shows excellent electrocatalytic activity in electrooxidation catalytic experiments of methanol, and has wide application prospects.

Description

technical field [0001] The present invention relates to the field of electrochemical catalysts. Specifically, the present invention uses the prepared PtCoFe nano-catalyst to catalyze the electrochemical oxidation of methanol. Background technique [0002] Due to its excellent catalytic performance and thermal stability, noble metal Pt nanostructure catalysts are widely used in industrial catalysis, biomimetic, electrocatalysis and other fields. However, due to some restrictive factors in practical applications, such as easy poisoning, short life and high price, this excellent nano-catalyst cannot be further promoted and applied. In order to solve these problems, researchers often use low-cost 3d transition metal elements to partially replace Pt to form Pt-based binary / multi-element alloy catalysts, and explore its morphology, composition and catalytic performance stability through condition control. relation. [0003] Among the many transition metal elements, Co and Fe ar...

Claims

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Application Information

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IPC IPC(8): H01M4/92H01M8/1011B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/921H01M4/928H01M8/1011Y02E60/50
Inventor 高道伟吕一品李书娜陈国柱
Owner UNIV OF JINAN
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