Alloy nano-particle preparation method based on protein reduction method

Abstract

The invention belongs to an alloy nano-particle preparation method based on a protein reduction method. Firstly, 3-50mg ML<-1> of purified protein solution is prepared; 10-30 mM of precious metal salt solution formed by one of silver, gold, platinum or palladium or mixing any two of the silver, the gold, the platinum or the palladium is prepared; 20-30 mM of metal salt solution of copper, nickel, ferrous iron or aluminum is prepared; the purified protein solution, the precious metal salt solution and the metal salt solution are mixed to prepare a nano alloy precursor solution, the pH of the nano alloy precursor solution is adjusted to an alkaline range through a sodium hydroxide solution, the precursor solution is evenly mixed and then high-purity nitrogen is introduced for deoxygenization, then the mixture is placed in water bath to be heated, and nano alloy quickly reduced by protein can be obtained. Time for preparing precious metal nano-particles reduced by the protein is shortened from 1-5 h to 5-30 min, nano alloy with properties of target nano-particles can be quickly and effectively synthesized, the synthesis rate is greatly increased, and commercial application is facilitated.

Description

technical field [0001] The invention belongs to the field of preparation of metal nanoparticle materials, and relates to a method for preparing alloy nanoparticle based on a protein reduction method. Background technique [0002] Binary or multi-component alloy nanoparticles have broad application prospects in catalysis, optics, biosensing, drug delivery, etc. due to their excellent physical and chemical properties. Alloys can not only have the unique properties of a single metal, but may also produce synergistic effects. Therefore, various new nano-alloy particle combinations have emerged in an endless stream in recent years. [0003] The synthesis of nanoparticles requires reducing and stabilizing agents. Since the addition of chemical reducing agents may have negative impacts on the environment, which is not in line with the development direction of green chemistry, more and more green synthesis methods have emerged as the times require. This includes the use of various...

AI Technical Summary

Problems solved by technology

However, the use of copper, nickel, ferrous, aluminum and other ions that are easily reduced by proteins to form zero-valent nanoclusters to accelerate the reduction of silver, gold, platinum, palladium and other noble metals and synthesize alloys or even ternary alloys has rarely been reported.

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