(299e) Quantum Dots Synthesis in Continuous Supercritical Micro-Millireactors

The development of nanosciences and nanotechnologies in the 21th century is linked to the progresses made with the nanomaterials preparation methods. Control, reproducibility, scalability and sustainability are the key issues for the design of advanced nanostructured materials. Among the synthesis approaches, the supercritical fluids based flow process presents an efficient alternative for the continuous, controlled, scalable and sustainable synthesis of nanomaterials.

Coupling chemistry and chemical engineering approaches in supercritical fluids conducts to the design of high quality and unique nanostructures. This will be in particular illustrated in this oral presentation through the continuous production of quantum dots (inorganic nanocrystals) made of selenide, sulfide and nitrides (CdSe, core-shell CdSe@CdS, GaN, etc.).

Besides the advantages of microscale flows for the precise control of the obtained nanostructures characteristics, scaling up is also of great interest for realizing the promise of these nanomaterials in devices structures. We will therefore detail briefly some example of scaling (production of CdSe QDs in millifluidic supercritical reactors) demonstrating production rates of up to 1g/day.