A Green Method for Recycling 2-Propanol from Water during Purification Process of Aqueous Nanocrystals

During traditional 2-propanol-based purification of aqueous nanocrystals (NCs), it is very difficult to recycle 2-propanol from the aqueous solution, which brings great consumption of 2-propanol during the purification process. A major contribution of this work is to provide a simple way to reduce the consumption via recycling of 2-propanol during the purification process. The recycled 2-propanol is available for precipitating NCs from aqueous solution in a new round of NC purification process. Due to the recycling of 2-propanol, the great consumption of 2-propanol can be avoided, which makes the purification process of aqueous NCs much greener and at a much lower cost.