Simple-substance amorphous palladium and preparing method and application thereof

An elemental palladium and amorphous technology, applied in the field of elemental amorphous palladium and its preparation, can solve the problems of high cooling rate and certain requirements for material size, and achieve high stability and good application prospects

Active Publication Date: 2018-08-21
深圳热电新能源科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] Although the corresponding amorphous states of body-centered cubic pure metals such as Ta, W, V, and Mo were successfully prepared by the rapid cooling method, this preparation method requires a high cooling rate and has certain requirements on the size of the material.

Method used

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  • Simple-substance amorphous palladium and preparing method and application thereof
  • Simple-substance amorphous palladium and preparing method and application thereof

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preparation example Construction

[0021] In one aspect of the present invention, the present invention provides a preparation method of elemental amorphous palladium. According to an embodiment of the present invention, refer to figure 1 , the method includes:

[0022] S100: Loading elemental palladium powder on a silicon nitride substrate

[0023] In this step, the elemental palladium powder can be purchased from commercial sources or synthesized by physical and chemical methods, and the crystal structure of the elemental palladium powder can be a face-centered cubic structure, for example, the elemental palladium powder of the face-centered cubic structure can be prepared by adopting the following steps Obtained: At room temperature, 0.1050g of PVP, 0.0600g of citric acid, and 0.0600g of L-ascorbic acid were dissolved in 8mL of deionized water, and the mixed aqueous solution was transferred to a three-necked flask and heated to 120°C for 5 minutes. At the same time, weigh 0.0650g K at room temperature 2 P...

Embodiment

[0037] At room temperature, 0.1050g of PVP, 0.0600g of citric acid, and 0.0600g of L-ascorbic acid were dissolved in 8mL of deionized water, and the mixed aqueous solution was transferred to a three-necked flask and heated to 120°C for 5 minutes. At the same time, weigh 0.0650gK at room temperature 2 PdCl 4 Dissolve in 3mL of deionized water, and inject it into a three-necked flask of mixed aqueous solution at a rate of 360mL / h, and react at 120°C for 3 hours. The obtained product is washed with acetone and deionized water to remove residual PVP. Obtain metal elemental palladium powder with a face-centered cubic structure; then mix the obtained elemental palladium powder with ethanol and ultrasonically disperse for 15 minutes to obtain a dispersion, then use a pipette gun to take the dispersed liquid droplet on the NanoEx-i-v MEMS chip produced by Thermo Fisher above; and the sample was heated to 800 ° C and kept for 5 min, and then rapidly cooled to room temperature at a coo...

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Abstract

The invention discloses simple-substance amorphous palladium and a preparing method and application thereof. The preparing method comprises the steps that firstly, simple-substance palladium powder isloaded to a silicon nitride substrate; secondly, the silicon nitride to which the simple-substance palladium powder is loaded is heated to 800-1,100 DEG C, and heat preservation is conducted for at least 3 min, wherein the silicon nitride to which the simple-substance palladium powder is loaded is obtained in the first step; thirdly, a palladium and silicon nitride system obtained in the second step is cooled to the room temperature with the apparent cooling rate larger than 103 DEG C / s, and the simple-substance amorphous palladium is obtained. Accordingly, the simple-substance amorphous palladium can be prepared with the low cooling rate through the preparing method, due to singleness of components of the prepared simple-substance amorphous palladium, complexity of multi-component metalglass is avoided, guidance can be better provided for study on the metal glass rheological property, mechanical performance, electrical properties, heat performance and other physical characters, andhigh stability is achieved. Meanwhile, the amorphous palladium has good application prospects in the fields of hydrogen storage, hydrogen separation films and the like.

Description

technical field [0001] The invention belongs to the field of amorphous materials, in particular, the invention relates to elemental amorphous palladium and its preparation method and application. Background technique [0002] Solid amorphous material is a condensed material with short-range order, long-range disorder, and no defects inside. The traditional preparation methods of amorphous mainly include liquid phase quenching and condensation from dilute gaseous state. Among them, the liquid phase quenching method is to heat and melt the material mixture of the required components into a liquid state, and then rapidly cool them in a certain way, so that the disordered structure of the liquid state can be preserved to form an amorphous state. Condensation from the diluted state refers to the dissociation of atoms or ions in the material in gaseous form by different processes, and then they are quickly and irregularly deposited on the cooling base plate to form an amorphous m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/10
CPCC22C45/10C22C2202/04C22C1/11
Inventor 何佳清何东升黄亦周毅
Owner 深圳热电新能源科技有限公司
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