Multi-metal one-dimensional nano material, preparation method and catalyst

A nanomaterial and polymetallic technology, applied in the field of catalytic material preparation, can solve the problems of complicated operation process, and achieve the effects of high yield, simple and efficient preparation method and experimental operation, superior catalytic activity and stability

Inactive Publication Date: 2020-04-28
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation strategy based on the seed crystal method has the disadvantages of cumbersome operation process, and due to the difference in reduction potential between different metal cations, the process controllability of nanocrystal nucleation and growth has brought severe challenges.

Method used

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  • Multi-metal one-dimensional nano material, preparation method and catalyst
  • Multi-metal one-dimensional nano material, preparation method and catalyst
  • Multi-metal one-dimensional nano material, preparation method and catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0025] In this embodiment, a one-dimensional platinum-rhodium-cobalt-nickel quaternary alloy ultrafine nanowire is prepared, and its preparation method includes the following steps:

[0026] 1) In a 25 ml reaction flask, add 30 mg platinum acetylacetonate, 6 mg rhodium acetylacetonate, 7 mg cobalt acetylacetonate, 7 mg nickel acetylacetonate, 60 mg cetyltrimethylammonium chloride, 5 mL oleylamine, and stir at room temperature for 10 minutes, ultrasound for 10 minutes;

[0027] 2) Add 30 mg of molybdenum hexacarbonyl, place in an oil bath at 180°C for 6 hours, cool naturally to room temperature after the reaction, wash and centrifuge several times with a mixture of ethanol and n-hexane for later use.

[0028] The morphology, composition and microstructure of the product are systematically studied by HAADF-STEM, TEM, XRD and other modern nano-testing and analysis techniques. HAADF-STEM, TEM( figure 1 a, b) The characterization product is a one-dimensional ultrafine nanowire st...

Embodiment 2

[0030] The difference between embodiment 2 and embodiment 1 is:

[0031] 1) In a 25 ml reaction flask, add 30 mg platinum acetylacetonate, 4 mg rhodium acetylacetonate, 7 mg cobalt acetylacetonate, 7 mg nickel acetylacetonate, 60 mg cetyltrimethylammonium chloride, 5 mL oleylamine, and stir at room temperature for 10 minutes, ultrasound for 10 minutes;

[0032] 2) Add 30 mg of molybdenum hexacarbonyl, place in an oil bath at 180°C for 6 hours, cool naturally to room temperature after the reaction, wash and centrifuge several times with a mixture of ethanol and n-hexane for later use.

Embodiment 3

[0034] The difference between embodiment 3 and embodiment 1 is:

[0035] 1) In a 25 ml reaction flask, add 30 mg platinum acetylacetonate, 2.4 mg rhodium acetylacetonate, 7 mg cobalt acetylacetonate, 7 mg nickel acetylacetonate, 60 mg cetyltrimethylammonium chloride, 5 mL oleylamine, and stir at room temperature 10 minutes, ultrasound for 10 minutes;

[0036] 2) Add 30 mg of molybdenum hexacarbonyl, place in an oil bath at 180°C for 6 hours, cool naturally to room temperature after the reaction, wash and centrifuge several times with a mixture of ethanol and n-hexane for later use.

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Abstract

The invention discloses a multi-metal one-dimensional nano material, a preparation method and a catalyst, and the method comprises the following steps: adding soluble metal salt and hexadecyl trimethyl ammonium chloride into oleylamine, stirring for 5-30 minutes at room temperature, and carrying out ultrasonic treatment for 5-30 minutes; then adding molybdenum hexacarbonyl, reacting at 180 DEG C for 6-12 hours, finally naturally cooling to room temperature, washing with ethanol and n-hexane, and carrying out centrifugal treatment so as to obtain the multi-metal one-dimensional nano material, wherein the soluble metal salt comprises platinum acetylacetonate, and further comprises at least two of rhodium acetylacetonate, cobalt acetylacetonate and nickel acetylacetonate.

Description

technical field [0001] The invention belongs to the technical field of preparation of catalytic materials, and in particular relates to a multi-metal one-dimensional nanometer material, a preparation method and a catalyst. Background technique [0002] The first report of carbon nanotubes by Iijima's research group in 1991 prompted people to break through the traditional understanding of the structure of matter at the nanoscale and opened up extensive research on similar one-dimensional (1D) nanostructures. One-dimensional nanomaterials represented by platinum group metals are widely used in research fields such as new energy conversion and utilization due to their excellent physical and chemical properties. As a clean, efficient, green, safe, and environment-friendly energy conversion device, direct alcohol fuel cells are considered to be a promising research direction that can solve problems such as energy crisis and environmental pollution. However, the slow reaction kin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89C25B3/02C25B11/08C25B11/12C25B3/23
CPCB01J23/8993B01J35/0033C25B3/23C25B11/051C25B11/091
Inventor 谢水奋王伟陈孝为甑超
Owner HUAQIAO UNIVERSITY
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