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A kind of polygonal morphology ptcofe alloy nanoparticles and preparation method thereof

A technology of alloy nanoparticles and morphology, applied in nanotechnology, nanotechnology, metal processing equipment, etc., can solve the problems of high price, short life, and easy poisoning of Pt nanostructure catalysts, and achieve high active site density and wide application foreground effect

Inactive Publication Date: 2019-05-03
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the above-mentioned technical problems, the present invention solves the technical problems such as easy poisoning, short service life and high price of current Pt nanostructure catalysts, and prepares a kind of PtCoFe alloy nanoparticles with high-density active sites to improve the performance of Pt nanostructure catalysts.

Method used

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  • A kind of polygonal morphology ptcofe alloy nanoparticles and preparation method thereof
  • A kind of polygonal morphology ptcofe alloy nanoparticles and preparation method thereof
  • A kind of polygonal morphology ptcofe alloy nanoparticles and preparation method thereof

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Embodiment 1

[0023] 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, the polygonal PtCoFe alloy nanoparticles (such as figure 2 Shown), wherein, the consumption range of polyvinylpyrrolidone K30 is 210mg, the consumption range of cetyltrimethylammonium bromide is 60mg, and the consumption of NaBr is identical with the consumption of cetyltrimethylammonium bromide.

[0024] Methanol (formic acid) electro-oxidatio...

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Abstract

The invention relates to a polygonal PtCoFe alloy nano particle and a preparation method thereof. In the present invention, chloroplatinic acid, cobalt chloride and ferric chloride are used as raw materials, PVP is used as reducing agent and protective agent, CTAB and NaBr with specific content are added, and a highly selective polygonal morphology is prepared under a hydrogen reducing atmosphere. PtCoFe alloy nanoparticles, the preparation method is green and clean. The obtained polygonal PtCoFe alloy nanoparticles have many step atoms and high active site density, which have broad application prospects.

Description

technical field [0001] The invention belongs to the field of functional nano alloys. Specifically, the present invention uses a hydrothermal synthesis method to prepare a PtCoFe alloy nanoparticle with a polygonal shape. 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 many transition metal elements, Co and Fe are respect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B22F1/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B22F9/24B22F1/0553B22F1/054
Inventor 高道伟吕一品李书娜陈国柱
Owner UNIV OF JINAN
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