Method for preparing noble metal alloy nano material with three-dimensional porous network structure

A technology of alloy nanomaterials and network structure, which is applied in the field of preparation of noble metal alloy nanomaterials with three-dimensional porous network structure, and can solve the problems of not being widely applicable to a variety of precious metals and cumbersome preparation methods

Active Publication Date: 2011-08-17
苏州科昂泰材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these preparation methods are relatively cumbersome, and only for one kind of precious metal, and cannot be widely applied to many kinds of precious metals, so they have great limitations.

Method used

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  • Method for preparing noble metal alloy nano material with three-dimensional porous network structure
  • Method for preparing noble metal alloy nano material with three-dimensional porous network structure
  • Method for preparing noble metal alloy nano material with three-dimensional porous network structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Weigh 0.005 gram of palladium acetate and 0.02 gram of DTAB (dodecyltrimethylammonium bromide) (the mass ratio of palladium acetate and DTAB is 1: 4) and put it into a 25 ml reaction kettle, add 0.04 milliliters of 0.09194 moles per liter of chloroplatinic acid (the molar ratio of Pd:Pt is 2:1) and 10 milliliters of ethylene glycol (the mass fraction of palladium acetate is 0.0448%), and magnetically stirred to form a homogeneous suspension.

[0028] (2) Add 0.1 ml of formaldehyde to the stirred suspension, and magnetically stir for 5 minutes.

[0029] (3) The reaction kettle was sealed, placed in an oven, and reacted at 150° C. for 8 hours.

[0030] (4) Take out the reactor and cool it down to room temperature naturally.

[0031] (5) Transfer the reacted product from the reaction kettle to a centrifuge tube, alternately centrifuge and ultrasonically wash the product with acetone and absolute ethanol, repeat 5 times, and obtain a three-dimensional network structure p...

Embodiment 2

[0034] The steps are the same as in Example 1, except that 0.04 in the 0.04 ml of 0.09194 moles per liter of chloroplatinic acid in the first step is replaced with 0.064, and the other reaction conditions remain unchanged, and the resulting product is a three-dimensional network structure palladium-platinum alloy.

[0035] The SEM photo of embodiment 2 is similar to that of embodiment 1, and the EDX photo of embodiment 2 is attached figure 1 b) photo.

Embodiment 3

[0037] The steps are the same as in Example 1, except that the 0.04 in the 0.04 ml of 0.09194 moles per liter of chloroplatinic acid in the first step is replaced by 0.08, and the other reaction conditions remain unchanged, and the resulting product is a three-dimensional network structure palladium-platinum alloy.

[0038] The SEM photo of embodiment 3 is similar to that of embodiment 1, and the EDX photo of embodiment 3 is attached figure 1 c) Photo.

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Abstract

The invention discloses a method for preparing a noble metal alloy nano material with a three-dimensional porous network structure. By adopting a one-step hydrothermal method, the method comprises the following steps of: firstly adding glycol, a metal precursor and a surfactant into a reaction kettle, stirring uniformly, then adding formaldehyde into the reaction kettle and stirring uniformly; sealing the reaction kettle, and then putting the reaction kettle in an oven with the temperature of 130-200 DEG C, and reacting for 6-10 hours; and finally, cooling the reaction kettle to room temperature naturally, cleaning centrifugally to finally obtain the noble metal alloy nano material with the three-dimensional porous network structure. In the method, the attributive advantages of noble metal and the three-dimensional porous network structure are combined, and the one-step hydrothermal method is adopted. Compared with the traditional methods, the method has the characteristics of simple operation method, strong universality, high yield and high repeatability and the like, and the prepared noble metal alloy has uniform appearance, strong stability, high purity and is adjustable in size and component.

Description

technical field [0001] The invention relates to the technical field of functional materials, more specifically, to a preparation method of a noble metal alloy nanomaterial with a three-dimensional porous network structure. Background technique [0002] Precious metal elements include ruthenium, rhodium, palladium, gold, silver, platinum and other elements. Precious metal alloys are based on one of the precious metals and added other elements. Most of the alloying elements used in precious metal alloys are metals (mainly transition metals), and a few are semi-metals and non-metals, with a total of about 50. Precious metal alloys have the main characteristics of precious metals. In terms of their specific uses, they have better comprehensive physical, chemical and mechanical properties than single precious metals, as well as high reliability, stability and long life. The initial preparation of precious metal alloys can be traced back to the gold-platinum alloy made in 1763. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24C22C1/08C22C5/00
Inventor 张兵崔建华张晋武萱赵为为汪欢
Owner 苏州科昂泰材料科技有限公司
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