Method for preparing Au nanoflower through microwave auxiliary method and Au nanoflower

Abstract

The invention relates to the technical field of nanometer material preparation, in particular to a method for preparing an Au nanoflower through a microwave auxiliary method and the Au nanoflower. Themethod comprises the following steps that 1, a HAuCl4 solution of a certain concentration is added into a round-bottom flask, and then octadecylamine, KBr and PVP are added to form a mixed solution a; 2, tetraethylene glycol (TEG) as a reducing agent is added into the mixed solution a to be mixed and stirred to form a mixed solution b; 3, the mixed solution b is put into a microwave reactor to besubjected to a heating reaction; and 4, the product obtained in the step 3 is processed by acetone to obtain the Au nanoflower. The microwave auxiliary method is adopted, the method is novel, and theAu nanoflower which is single in morphology, good in dispersity and uniform in size is prepared.

Description

technical field

[0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a microwave-assisted method for preparing Au nanoflowers. Background technique

[0002] Microwave is an electromagnetic wave between radio waves and infrared rays, with a wavelength range of 1mm to 1m and a frequency range of 0.3 to 300GHz. It has the characteristics of short wavelength, high frequency, and strong penetrating ability, and obeys the law of light. In 1986, Gedy and others carried out chemical reactions such as esterification and hydrolysis in a microwave oven, and used microwaves for the synthesis of materials. Since then, microwave technology has gradually penetrated into various fields of chemistry and has become a new heat source. The principle of microwave heating is to use the action of microwave electromagnetic field to make polar molecules change from the original thermal motion state to alternate orientation according to the di...

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