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Method for synthesizing series alloy nanometer crystals

An alloy nanocrystal and a series of technologies, applied in nanotechnology, nanotechnology, nanostructure manufacturing and other directions, can solve the problems of unfavorable popularization and high cost of alloy nanocrystals, and achieve adjustable size, narrow particle size distribution, and uniform morphology. Effect

Active Publication Date: 2010-06-02
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most methods use toxic and expensive organometallic salts as reactants, such as platinum acetylacetonate, carbonyl iron, copper acetylacetonate, etc., which makes the cost of preparing alloy nanocrystals relatively high, which is not conducive to popularization.

Method used

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  • Method for synthesizing series alloy nanometer crystals
  • Method for synthesizing series alloy nanometer crystals
  • Method for synthesizing series alloy nanometer crystals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Take 10ml of octadecylamine and heat it to 260°C, put into it the molar ratio of 1:1, copper nitrate and chloroplatinic acid with a total mass of 0.1g, react for 10 minutes, pour out the octadecylamine solvent and wash the precipitate with ethanol, Dry at 40°C to obtain CuPt alloy nanocrystals.

Embodiment 2

[0034] Take 10ml tetradecylamine and heat it to 180°C, put into it copper acetate and chloroplatinic acid with a molar ratio of 0.1:1 and a total mass of 0.01g, react for 60 minutes, pour out the oleylamine solvent and wash the precipitate with ethanol, 80 ℃ drying, CuPt alloy nanocrystals can be obtained.

Embodiment 3

[0036] Take 10ml of hexadecylamine and heat it to 200°C, put into it the molar ratio of 10:1, copper nitrate and chloroplatinic acid with a total mass of 1g, react for 60 minutes, pour out the hexadecylamine solvent and wash the precipitate with ethanol, 60 ℃ drying, CuPt alloy nanocrystals can be obtained.

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Abstract

The invention provides a method for synthesizing series alloy nanometer crystals and belongs to the technical field of inorganic material preparation processes. In a long chain amine solvent, metallic inorganic salt serving as a raw material is reacted at the temperature of between 180 and 300 DEG C for 10 to 60 minutes, and by controlling the test parameters of a mol ratio of the reactants, a concentration of the reactants and a reaction temperature, a series of alloy nanometer crystals with controllable composition, structure, shape and size are formed. The method has the advantages of low-priced and readily available raw materials, short reaction time, repeatedly usable solvent, simple equipment, easy control, high process repeatability, stable product quality, safe and reliable operation and the suitability for mass industrialized production.

Description

technical field [0001] The invention relates to a method for synthesizing alloy nanocrystals, which belongs to the technical field of inorganic material preparation technology. Background technique [0002] In today's society, the demand for energy and resources for human development is increasing and the contradiction with the environment is becoming more and more obvious. Catalysts and related catalytic technologies have become the key to energy, the environment and their sustainable development. Among them, noble metal catalysts play a pivotal role in many important chemical and chemical processes, such as: platinum catalysts for petroleum reformation; palladium catalysts for selective hydrogenation; platinum catalysts for isomerization reactions ; Gold catalysts for low-temperature oxidation of carbon monoxide; palladium catalysts for methane combustion; platinum catalysts for direct methanol fuel cell electrode reactions, etc. However, noble metals are not only expensi...

Claims

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Application Information

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IPC IPC(8): B82B3/00B01J23/89B01J23/60B01J23/62
Inventor 李亚栋王定胜
Owner TSINGHUA UNIV
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