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Method for synthesizing platinum atom cluster based on complexation and thermal reduction

A technology of atomic clusters and complexation, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problem of low platinum atom utilization and achieve high Activity and stability, high cost reduction, good catalytic performance

Inactive Publication Date: 2018-11-13
JIANGSU INST OF ECONOMIC & TRADE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the utilization of platinum atoms in these catalysts is very low because the Pt active sites are only located on the surface of the catalyst particles.

Method used

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  • Method for synthesizing platinum atom cluster based on complexation and thermal reduction

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Embodiment 1

[0016] Dissolve chloroplatinic acid in a mixed solution of diethylene glycol and bishydroxyethylamine, and the concentration of platinum ions in the resulting solution is 0.1mol / L. The solution was stirred vigorously at a temperature of 60°C for 5 hours, and then at a high temperature of 200°C for 5 hours. After the obtained product is cooled, it is centrifuged and washed with deionized water several times to obtain the corresponding product. The obtained product of the present invention is characterized by a transmission electron microscope (TEM), see figure 1 .

Embodiment 2

[0018] Dissolve chloroplatinic acid in a mixed solution of diethylene glycol and bishydroxyethylamine, and the concentration of platinum ions in the resulting solution is 1mol / L. The solution was stirred vigorously at a temperature of 60°C for 5 hours, and then at a high temperature of 200°C for 5 hours. After the obtained product is cooled, it is centrifuged and washed with deionized water several times to obtain the corresponding product.

Embodiment 3

[0020] Dissolve chloroplatinic acid in a mixed solution of diethylene glycol and bishydroxyethylamine, and the concentration of platinum ions in the resulting solution is 0.1mol / L. The solution was vigorously stirred at a temperature of 60° C. for 1 h, and then at a high temperature of 200° C. for 5 h. After the obtained product is cooled, it is centrifuged and washed with deionized water several times to obtain the corresponding product.

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Abstract

The invention discloses a method for synthesizing a platinum atom cluster based on complexation thermal reduction. The method comprises the step: carrying out complexation and thermal reduction reaction through diglycol, dihydroxyethyl amine and platinum ions, thus preparing the platinum atom cluster. According to the method disclosed by the invention, the defects in the prior art that the particle size is difficult to control, particle distribution is non-uniform, and a platinum nano-material is difficult to well form the platinum atom cluster are overcome, and the platinum atom cluster in large specific surface area, uniform particle diameter and good catalytic performance is prepared; the platinum atom cluster prepared by the invention has very good catalytic performance, and high activity and high stability of a single platinum atom and the platinum atom cluster are improved; the method for synthesizing the platinum atom cluster is simple and easy, a new method is provided for designing of the next generation of catalysts, and huge potential of reducing the high cost of a commercial platinum catalyst is obtained.

Description

technical field [0001] The invention relates to a platinum atomic cluster having good catalytic performance, and the platinum atomic cluster can improve the catalytic activity of platinum, and specifically relates to a synthesis method of the platinum atomic cluster. Background technique [0002] The research on metal nanoclusters has become one of the research hotspots in the world in recent years. Nano-metal clusters exhibit different physical and chemical properties from metal atoms or macroscopic metals in terms of electromagnetic properties, nonlinear optical properties, and catalytic properties. Platinum is considered to be the most efficient catalyst for the hydrogen evolution reaction in water splitting and has long been used in the field of industrial catalysis. However, the platinum atom utilization in these catalysts is very low because the Pt active sites are only located on the surface of the catalyst particles. So, clusters of platinum atoms shrink the cataly...

Claims

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Application Information

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IPC IPC(8): B01J23/42B01J37/16
CPCB01J23/42B01J37/16B01J35/23
Inventor 吴晓红
Owner JIANGSU INST OF ECONOMIC & TRADE TECH
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