Abstract:

In order to let students understand the general synthesis method of nanomaterials and instill the concept of controllable synthesis of nanomaterials, the green synthesis method is used to prepare Cu₂O microparticles of different colors by the liquid phase reduction method. In this experiment, glucose was used as the reducing agent, and the Bancol reagent was used to react under alkaline conditions. The cuprous oxide sol of different sizes and morphologies was successfully synthesized, and the morphology of the sample was characterized by a biological microscope. The control mechanism of Cu₂O morphology was explored by shape model of Cu₂O to realize the effective control of the morphology and particle size. The degradation performance of Cu₂O as a visible light catalyst on the organic dye methylene blue was evaluated. This experiment involves the synthesis, control and application of nanomaterials, which is conducive to cultivating students' ability to observe, analyze and solve problems. At the same time, the application of nanomaterials to the sewage treatment of organic dyes will help cultivate students' environmental awareness and professional power.

Key words: Cuprous oxide, Biological microscope, Controllable synthesis, Photo-catalysis, Methylene blue