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A kind of preparation method of bimetallic janus structure nanoparticle

A nanoparticle and bimetallic technology is applied in the field of preparation of bimetallic Janus structure nanoparticles, which can solve the problems of high reaction conditions, difficult synthesis, long time, etc., and achieves the effects of low price, simple process and low cost.

Active Publication Date: 2017-07-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems of high reaction condition requirements, difficult synthesis, high cost and long time in the existing method for preparing Janus structure particles, and provides a method for preparing bimetallic Janus structure nanoparticles

Method used

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  • A kind of preparation method of bimetallic janus structure nanoparticle
  • A kind of preparation method of bimetallic janus structure nanoparticle
  • A kind of preparation method of bimetallic janus structure nanoparticle

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specific Embodiment approach 1

[0018] Specific embodiment one: the preparation method of a kind of bimetallic Janus structure nano particle of this embodiment is to carry out according to the following steps:

[0019] 1. Mix noble metal nanoparticles with a particle size of 2nm to 100nm with water to obtain an aqueous solution of noble metal nanoparticles with a concentration of 0.01mmol / L to 1mmol / L, and then mix the solution with a concentration of 5mmol / L to 50mmol / L sodium citrate aqueous solution and 11-mercaptoundecanoic acid / ethanol solution with a concentration of 1mmol / L~20mmol / L are dropped into the noble metal nanoparticle aqueous solution with a concentration of 0.01mmol / L~1mmol / L, drop After the addition is completed, the reaction system is obtained, and the reaction system is stirred for 20min to 60min under the condition of a rotating speed of 50rpm to 400rpm, and then a noble metal salt solution with a concentration of 5mmol / L to 50mmol / L is added dropwise to the reaction system, and the Aft...

specific Embodiment approach 2

[0026] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the noble metal nanoparticles with a particle diameter of 2nm to 100nm described in step one are gold nanoparticles, silver nanoparticles, platinum nanoparticles or palladium nanoparticles; step A salt solution of noble metal with a concentration of 5mmol / L~50mmol / L is a salt solution of gold, silver, platinum or palladium; and the particle size in step 1 is 2nm~100nm The noble metal nanoparticles and the noble metal in the noble metal salt solution with a concentration of 5mmol / L-50mmol / L in step 1 cannot be the same kind of noble metal. Others are the same as the first embodiment.

specific Embodiment approach 3

[0027] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the sodium citrate aqueous solution with a concentration of 5mmol / L~50mmol / L and a concentration of 1mmol / L~20mmol are mixed under the condition of rotating speed of 50rpm~300rpm The / L 11-mercapto undecanoic acid / ethanol solution is dropped into the aqueous solution of noble metal nanoparticles with a concentration of 0.01mmol / L˜1mmol / L. Others are the same as those in Embodiment 1 or 2.

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Abstract

A preparation method of bimetallic Janus structure nanoparticle relates to a preparation method of bimetallic Janus structure nanoparticle. The present invention is to solve the problems of high requirement of reaction conditions, difficult synthesis, high cost and long time in the existing method for preparing Janus structure particles. Method: 1. Mix precious metal nanoparticles with water to obtain an aqueous solution of precious metal nanoparticles, drop the aqueous sodium citrate solution and 11-mercaptoundecanoic acid / ethanol solution into the aqueous solution of precious metal nanoparticles, stir, and then add the precious metal dropwise 2. Add tert-butylamine borane complex aqueous solution dropwise to the mixed solution, stir, and centrifuge to obtain a solid, and disperse the solid in water to obtain a bimetallic Janus structure Nanoparticle solution. The present invention is used to catalyze organic reactions.

Description

technical field [0001] The invention relates to a preparation method of bimetallic Janus structure nanoparticles. Background technique [0002] Since Gennes first highlighted Janus-structured particles in his Nobel Prize Lecture, such structures have received extensive attention in materials science. Generally speaking, Janus-structured particles refer to the combination of two different functionalized surfaces or two components with different physicochemical properties in the same particle structure. The Janus structure integrates multiple functions in one body, so it has good application prospects in the fields of optics, catalysis, sensing and biomarkers. However, the expensive ligands such as DNA or amino acids used in the traditional preparation make the preparation cost higher. Contents of the invention [0003] The invention aims to solve the problems of high requirement on reaction conditions, difficult synthesis, high cost and long time in the existing method fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F9/24B82Y40/00
CPCB82Y40/00B22F9/24B22F1/14B22F1/054
Inventor 于淼孙磊孙晔向松涛李宁宁
Owner HARBIN INST OF TECH