Seed-mediated synthesis of silver nanocrystals with controlled sizes and shapes in droplet microreactors separated by air.

摘要: Silver nanocrystals with uniform sizes were synthesized in droplet microreactors through seed-mediated growth. The key to the success of this synthesis is use air as a carrier phase generate droplets. not only separates reaction solution into droplets but also provides O2 for generation reducing agent (glycolaldehyde). It serves buffer space diffusion NO, which formed situ due oxidative etching Ag twin defects. For first time, we able controlled and shapes continuous production by using microreactors. nanocubes, their edge lengths could be readily range 30-100 nm varying amount seeds, concentration AgNO3 Furthermore, demonstrated octahedra We believe that air-driven device can extended other noble metals shapes.