Green Method to Make Nanoparticles and Ultrafine Powder
A novel freeze-dissolving approach has been devised that offers greater efficiency and sustainability compared to the classic freeze-drying process to make superfine powder or nanoparticles. In the research published in the journal ACS Sustainable Chemistry & Engineering, sphere-shaped ice particles were formed in an aqueous mixture of NH4H2PO4 or NaHCO3 to produce their respective nanoparticles. What is the Freeze-Drying Method? [...]