Preparation method of nano Cu2O with flower-like structure and application thereof

Abstract

The invention discloses a preparation method of nano Cu2O with a flower-like structure and application thereof and belongs to the fields of nano material preparation technologies and catalytic property application. The preparation method comprises the following specific steps: under a room-temperature condition, adopting copper acetate as a main raw material, adding proper amounts of catalyst, reducing agents and protective agents, magnetically stirring and reacting for 45-180 minutes under a room temperature, centrifugally separating suspension liquid, using deionized water to wash for 3-5 times, carrying out air drying at a room temperature to obtain an ideal nano Cu2O with the flower-like structure. The nano Cu2O with the flower-like structure can be used as a catalyst to be applied toreaction of preparing 1H-1,2,3-benzotriazole and derivatives by 1,3-dipolar cycloaddition reaction, has the characteristics of high selectivity and good cycling performance, and shows good catalytic performance. The whole preparation method disclosed by the invention is carried out in a pure water solution system under a room temperature, the experimental operation process is simple, the yield ofa target product is high, the preparation process is stable, the requirements on instruments and equipment are low and the energy-saving and environment-friendly effects are achieved.

Description

technical field [0001] The invention belongs to the field of nano-material preparation technology and catalytic performance application, and specifically relates to a kind of green synthesis of nano-Cu at room temperature 2 O flower-like structure, nano-Cu 2 O materialization application provides technical support. Background technique [0002] 1H-1,2,3-Benzenetriazole and its derivatives have excellent properties such as anti-virus, anti-cancer, and anti-allergic. At present, the main preparation method is the 1,3-dipolar cycloaddition reaction of azide and alkyne (Huisgen reaction). However, the non-catalytic reaction has a high reaction temperature and a low yield of the target product. Therefore, how to improve the efficiency of the 1,3-dipolar cycloaddition reaction of azide and alkyne has become a difficult problem in current research. Considering that the Cu(I)-catalyzed Huisgen cycloaddition reaction, especially in the preparation of 1H-1,2,3-benzenetriazole deri...

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Problems solved by technology

Considering that the Cu(I)-catalyzed Huisgen cycloaddition reaction, especially in the preparation of 1H-1,2,3-benzenetriazole derivatives, has a high selectivity for 1 and 4 substitutions, the Cu(I) + It is usually obtained by in situ reduction of Cu(II) or oxidation of Cu(0), and its catalytic selectivity is often improved by loading, but it is still selective and catalytic for the 1,3-dipolar cycloaddition reaction of Huisgen reaction Activity is still not ideal

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