Ultrasonic graphene treatment details

Ultrasonic graphene treatment details

Ultrasonic sonochemical dispersion principle:

Acoustic chemistry is an emerging interdisciplinary subject that uses ultrasound to accelerate chemical reactions or trigger new reaction pathways to increase chemical reaction yields or acquire new chemical reaction products. The main driving force of the sonochemical reaction comes from acoustic cavitation, extreme physical conditions such as high temperature (greater than 5 000 000 K), high pressure (greater than 2.03 x 108 Pa), shock wave or micro jet accompanying the cavitation bubble implosion.

2. Application of ultrasonic chemistry? The application of sonochemistry is very broad and can be roughly classified into 9 categories: biochemistry, analytical chemistry, catalytic chemistry, electrochemistry, photochemistry, environmental chemistry, mineral chemical treatment, extraction and separation. Synthesis and degradation.

When ultrasonic waves are in liquid media, mechanical, thermal, optical, electrical, and chemical effects are produced by mechanical action, cavitation, and heat. In particular, high-powered ultrasonic waves produce intense cavitation, which locally forms transient high temperatures, high pressures, vacuum and microjets. As a physical tool and tool, ultrasonic technology can produce a series of near-extreme conditions in a medium commonly used in chemical reactions. This energy can not only stimulate or promote many chemical reactions, accelerate the speed of chemical reactions, and even change certain The direction of the chemical reaction produces some unexpected effects and miracles. It is generally believed that the above phenomena occur mainly due to the mechanical action and cavitation of the ultrasound, which are the result of changing the conditions and environment of the reaction. Mechanical action - Ultrasonic waves are introduced into the chemical reaction system. Ultrasonic waves can force the material to move vigorously. The one-way force accelerates the transfer and diffusion of the material. Instead of mechanical agitation, the material can be peeled off from the surface, thus renewing the interface. Cavitation - In some cases, the generation of ultrasonic effects is related to the cavitation mechanism, which refers to the series of dynamics of tiny bubbles (holes) present in the liquid under the action of sound waves. Learning process: oscillation, expansion, contraction and even collapse. In the event of cavitation, the local state of the liquid changes greatly, resulting in extreme high temperatures and high pressures. It provides a new and very special physical and chemical environment for chemical reactions that are difficult or impossible to achieve under normal conditions.