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AuPd alloy nano-cluster and synthesis method thereof

A technology of alloy nanometer and synthesis method, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of cumbersome steps and complicated operation, and achieve the effect of simple operation and easy control.

Active Publication Date: 2021-06-04
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there are more and more studies on the spatial structure and application of metal alloy nanoclusters. A series of bimetallic alloy nanoclusters have been synthesized. For example, Wu Zhikun's group successfully synthesized Au 24 Pd and Au 24 Pt alloy clusters and their crystal structure (Chem.Commun., 2016, 52, 9873–9876), but the synthesis of AuPd alloy nanoclusters with different sizes and precise atomic numbers is still a challenge
For some nanocluster synthesis methods, the steps are cumbersome and the operation is complicated

Method used

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  • AuPd alloy nano-cluster and synthesis method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Synthesis of AuPd Alloy Nanoclusters

[0038] 40mg of HAuCl 4 and 200 mg of TOAB (tetraoctyl ammonium bromide) were dissolved in 5 mL H 2 In O and 10mL toluene, 15mg ammonium tetrachloropalladate and 65mg triphenylphosphine were dissolved in 3mL methanol, after stirring for 30 minutes, the reactant in the methanol solution was mixed with the reactant in the toluene system, and added with chlorine Auric acid ratio is 5:1 tert-butyl thiol ligand, stir at room temperature for 30 minutes, then dissolve 90 mg of sodium borohydride in 4 mL of water at 4 ° C, add to the above solution for reduction, the solution slowly turns reddish brown, Indicates the generation of AuPd nanoparticles. Finally, the alloy nanocluster is purified, the product is spin-dried, washed with methanol three times, and finally extracted with dichloromethane and spin-dried.

[0039] During the reaction process, the absorption peaks of the product were characterized by ultraviolet-visible absorption s...

Embodiment 2

[0042] Synthesis of AuPd Alloy Nanoclusters

[0043] 40mg of AuCl 3 and 200 mg of TOAB (tetraoctyl ammonium bromide) were dissolved in 5 mL H 2 In O and 10mL toluene, 15mg of palladium chloride and 65mg of triphenylphosphine were dissolved in 3mL of methanol, after stirring for 30 minutes, the reactant in the methanol solution was mixed with the reactant in the toluene system, and added with chloroauric acid The phenylethylmercaptan with a ratio of 5:1 was stirred at room temperature for 30 minutes, then 90 mg of sodium borohydride was dissolved in 4 mL of water at 4°C, and added to the above solution for reduction. The solution slowly turned reddish brown, indicating that the AuPd nanoparticles generate. Finally, the alloy nano-cluster is purified, the product is spin-dried, washed with methanol for three times, finally extracted with dichloromethane, and spin-dried to finally obtain the AuPd alloy nano-cluster.

Embodiment 3

[0045] Synthesis of AuPd Alloy Nanoclusters

[0046] 40mg of AuCl 3 and 200 mg of tetrabutylammonium chloride were dissolved in 5 mL of H 2 In O and 10mL toluene, 15mg of palladium chloride and 65mg of triphenylphosphine were dissolved in 3mL of methanol, after stirring for 30 minutes, the reactant in the methanol solution was mixed with the reactant in the toluene system, and added with chloroauric acid The tert-butylmercaptan with a ratio of 5:1 was stirred at room temperature for 30 minutes, then 90 mg of sodium borohydride was dissolved in 4 mL of water at 4 ° C, and added to the above solution for reduction, the solution slowly turned reddish brown, indicating that the AuPd nano Particle generation. Finally, the alloy nano-cluster is purified, the product is spin-dried, washed with methanol for three times, finally extracted with dichloromethane, and spin-dried to finally obtain the AuPd alloy nano-cluster.

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Abstract

The invention provides an AuPd alloy nano-cluster and a synthetic method thereof. The synthetic method specifically comprises the following steps that gold salt and a phase transfer agent are dissolved in water and an organic solvent, stirring is conducted for a period of time, and a water phase is removed; palladium salt and a phosphine ligand are dissolved in an alcohol solvent, stirring is conducted for a period of time, the two above solutions are mixed, a ligand is added for reacting, after reacting is conducted for a period of time, a reducing agent is added to conduct reducing to obtain AuPd alloy nano-particles, and the AuPd alloy nano-cluster with the accurate atom number is obtained along with the prolonging of the reaction time; and the AuPd alloy nano-clusters with the accurate number of atoms and different sizes are obtained by adjusting the proportion of gold atoms to palladium atoms. The method has feasibility and is simple to operate, and the AuPd nano-clusters with different sizes can be obtained by changing the proportion of gold atoms and palladium atoms.

Description

technical field [0001] The invention relates to the technical field of metal alloy nano-cluster synthesis, in particular to an AuPd alloy nano-cluster and a synthesis method thereof. Background technique [0002] In recent years, metal nanoclusters with precise atomic numbers have become a frontier topic in nanoscience research. Metal nanoclusters are generally composed of metals and ligands, with metal atoms as the core and ligands as the shell to form different core-shell structures. The size of metal nanoclusters is less than 2nm and has a specific number of metal atoms and ligands. Due to its good stability and physical and chemical properties, it plays an important role in many aspects, such as catalysis, bioimaging, sensing, and drug delivery. and cancer treatment. Therefore, understanding how the atoms in nanoclusters are arranged and how to protect the surface is of great significance for exploring the properties and applications of metal nanoclusters. [0003] At...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00B82Y30/00B82Y40/00
CPCB22F9/24B82Y40/00B82Y30/00B22F1/07B22F1/054
Inventor 付雪梅黄家辉刘超林欣章
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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