Cryomilling: An environment friendly approach of preparation large quantity ultra refined pure aluminium nanoparticles

The preparation of aluminium nanoparticles in large quantity is a challenge for most of the synthesis processes available. The present investigation reports a top down approach, known as cryomilling to synthesize large quantity of aluminium nanoparticles (Al NPs). The cryomilling is known to be for ultra refinement of particles size as well as suppress of the rate of oxidation during synthesis. Aluminum is a reactive metal and highly prone to oxidization/nitridation in nanoscale. Therefore, a novel cryomill has been used to prepare large quantity Al NPs in which, the powder has been milled at extremely low temperature (