Application Of Ultrasonic Extraction Equipment in Graphene Preparation

When ultrasonic vibration is transmitted to the liquid, due to the high sound intensity, a strong cavitation effect will be excited in the liquid, resulting in a large number of cavitation bubbles in the liquid. With the generation and rupture of these air bubbles, micro jets will be generated to break up the liquid and major solid particles. At the same time, due to the vibration of ultrasonic, the solid-liquid is more fully mixed, which promotes most of the differentiation reaction. In the medical field, for example, when phospholipids and cholesterol are mixed and dispersed by ultrasonic extraction equipment, smaller particles can be obtained for intravenous injection.

The application of ultrasonic extractor in the preparation of graphene is mainly in the solvothermal intercalation method and redox method. These two methods are relatively simple to operate and the cost is lower than other preparation methods. They are the main production methods for the large-scale preparation of nano graphene powder. Because ultrasonic wave will produce cavitation in liquid, forming physical phenomena such as micro jet and vibration, it plays a role of high-speed stirring, crushing, separation and dispersion of suspended particles in liquid. In short, ultrasound extraction can play a role of anti acceleration and catalysis in the preparation of graphene solution. In the process of use, choose the beaker as large as the number of samples, which is also conducive to the convection of samples in ultrasound and improve the crushing efficiency.