Preparation method of Pt3Ni@PtNi2 core-shell structure nanowire

A core-shell structure, nanowire technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of harsh reaction conditions, high cost of large-scale production, cumbersome imine steps, etc., and achieve high selectivity, high The generation method is simple and the catalytic effect is good.

Active Publication Date: 2017-04-26
YANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Before the present invention was made, the steps of the traditional imine preparation method were cumber

Method used

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  • Preparation method of Pt3Ni@PtNi2 core-shell structure nanowire
  • Preparation method of Pt3Ni@PtNi2 core-shell structure nanowire
  • Preparation method of Pt3Ni@PtNi2 core-shell structure nanowire

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Embodiment 1

[0027] Select 9mg of platinum acetylacetonate, 2mg of nickel acetylacetonate, 60mg of glucose, 30mg of cetyltrimethylammonium chloride and add 5mL of oleyl ammonia to dissolve; ultrasonicate the above solution in an ultrasonic machine for 1 hour until it is completely dissolved, and then dissolve the above solution Put it in an oil bath at 200° C. for 1 hour to react; wash and dry the reaction product with a mixed solvent of ethanol and n-hexane to obtain the nanowire.

Embodiment 2

[0029] Select 9mg of platinum acetylacetonate, 2mg of nickel acetylacetonate, 60mg of glucose, 30mg of cetyltrimethylammonium chloride and add 5mL of oleyl ammonia to dissolve; ultrasonicate the above solution in an ultrasonic machine for 1 hour until it is completely dissolved, and then dissolve the above solution Put it in an oil bath at 200° C. for 5 hours to react; wash and dry the reaction product with a mixed solvent of ethanol and n-hexane to obtain the nanowire.

Embodiment 3

[0031] Select 9mg of platinum acetylacetonate, 2mg of nickel acetylacetonate, 30mg of glucose, 30mg of cetyltrimethylammonium chloride and add 5mL of oleyl ammonia to dissolve; ultrasonicate the above solution in an ultrasonic machine for 1 hour until it is completely dissolved, and then dissolve the above solution Put it in an oil bath at 200° C. for 1 hour to react; wash and dry the reaction product with a mixed solvent of ethanol and n-hexane to obtain the nanowire.

[0032] Such as figure 1 , figure 2 , image 3 As shown, using D8ADVANCE type XRD (Cu kαradiation, , German Bruker-AXS company) to determine the crystal phase structure of the prepared samples. The morphology of the prepared samples was observed by S4800II FESEM (FESEM, s-4800II, Hitachi). The Tecnai F30 field emission transmission electron microscope (HRTEM, Tecnai F30, FEI) from philips-FEI in the Netherlands was used to detect and characterize the structure of the samples intuitively.

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Abstract

The invention relates to a preparation method of a Pt3Ni@PtNi2 core-shell structure nanowire. The method comprises the steps that platinum bis(acetylacetonate), nickel acetylacetonate, glucose and cetyltrimethylammonium chloride are added into 5 ml of oil-ammonia for dissolving, the solution is subjected to ultrasonic treatment in an ultrasonic machine to be mixed to be uniform, the mixed solution reacts in an oil bath at the temperature of 200-220 DEG C, an oil bath reaction product is cleaned, and the core-shell structure nanowire is obtained. According to the method, the defects that a traditional imine preparation method is tedious in step, the reaction condition is strict, and the large-scale production cost is high are overcome. According to the core-shell structure nanowire, the catalyst generation method is simple, the catalytic effect is god, and the selectivity is high. A catalytic reaction can be conducted at room temperature and completed at one step, the stability is good, the defects that traditional distillation, reflux and other methods have tedious steps and are high in cost are overcome, the synthesized catalyst can generate aminobenzene by conducting addition on nitrobenzene through hydrogen, the phenomenon that imine is subjected to hydrogenation to generate amine is not likely to occur, and the excellent selectivity of the catalyst on hydrogen addition is embodied.

Description

technical field [0001] The invention relates to the field of selective catalysis, in particular to a Pt 3 Ni@PtNi 2 Preparation method of core-shell structure nanowire. Background technique [0002] The noble metal platinum has shown excellent performance in industrial catalysis, especially as a catalyst in fuel cells and hydrogenation reactions. In addition, platinum has many different morphologies and platinum alloys with various components, which exhibit excellent performance in all aspects. Platinum has a good catalytic ability for many organic hydrogenation reactions, but this also limits its application in selective catalysis. The existing method is to wrap very small platinum particles in MOF materials, and use the gaps of MOF for selective catalysis. But this greatly limits the performance and application range of platinum catalysis, because only small organic molecules can be catalyzed, and the gaps of MOF are generally relatively small. However, organic materi...

Claims

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Application Information

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IPC IPC(8): B01J23/89B82Y30/00B82Y40/00
CPCB01J23/892B01J35/0073B82Y30/00B82Y40/00
Inventor 吴显政武楠吴航吕鹏飞沈小双
Owner YANGZHOU UNIV
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