Synergistic Effect of High Irradiation Power and Antisolvent Addition for Enhanced Microwave Assisted Nanoparticle Synthesis Process

Abstract

To promote nucleation in nanoparticle synthesis, high-power operation is desirable. However, at high power, heat generation due to the rapid microwave absorbance of particles often results in rapid bubble growth, unstable nucleation, and superheating. Therefore, a trade-o between suppressing superheating and producing stable and ner nanoparticles is necessary. This study aims to investigate and con rm the synergistic e ect between the high power of microwaves and addition of different types of antisolvents. Results show that the addition of an antisolvent prevents superheating and produces ne-sized particles at high-power operation. In addition, it was observed that glycerin is a better antisolvent than ethylene glycol.