Photochemical preparation method of amphiphilic silver nanometer granules

Abstract

The invention discloses a photochemical preparation method of amphiphilic silver nanometer granules, which uses water as a solvent, an amphiphilic macromolecule thiomichler's ketone photo initiator asa reducing agent and a stabilizing agent and silver nitrate as a raw material, and the materials are simply mixed and form silver nanometer granules with uniform granular size distribution under ultraviolet light irradiation. The silver nanometer granules prepared by the invention have amphiphilic property and can be dissolved into various polarity and non-polarity solvents. The whole preparationprocess has simplicity and environmental protection.

Description

technical field [0001] The invention relates to a photochemical preparation method of amphiphilic silver nanoparticles, belonging to the technical field of photochemistry. Background technique [0002] Metal nanoparticles have attracted extensive attention due to their unique physical and chemical properties and potential applications in biosensors, optoelectronic nanodevices, and heterogeneous catalysts. Among them, silver nanoparticles have great application prospects in the fields of nanosensors, optoelectronic devices, nanocoating materials, and nanocatalysis. Commonly used methods for preparing nanoparticles include chemical reduction, phase transfer, electrochemical, sonochemical, and photochemical methods. Many preparation methods need to use mercapto compounds, dendritic polymers, amine compounds, etc. as stabilizers for nanoparticles, and the obtained silver nanoparticles greatly reduce their stability due to the surface coating of more long-chain thiols or long-ch...

AI Technical Summary

Problems solved by technology

Many preparation methods need to use mercapto compounds, dendritic polymers, amine compounds, etc. as stabilizers for nanoparticles, and the obtained silver nanoparticles greatly reduce their stability due to the surface coating of more long-chain thiols or long-chain amines. Safety in everyday life

Moreover, most of these methods need to use a large amount of organic solvents, which cause different degrees of pollution to the environment, and the post-processing process is also relatively troublesome.

In comparison, the photochemical method is a relatively simple method for preparing metal nanoparticles, which has the advantages of high reactivity and controllable particle morphology (Marin, M.L.; McGilvray, K.L.; Scaiano, J.C.J.Am.Chem. Soc., 2008, 130, 16572-16584), but commonly used photochemical methods also generally require a large amount of organic solvents and stabilizers, causing pollution to the environment. The relatively large impact is not conducive to the unique properties of metal nanoparticles, and the relatively complicated post-processing also limits the development of photochemical methods.

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