Fig. 1From: Fast Synthesis of Pt Nanocrystals and Pt/Microporous La2O3 Materials Using Acoustic LevitationHRTEM images of a, b Pt nanoparticles prepared by the reduction by NaBH4 without acoustic levitation (0.5 g/L), c–e Pt clusters prepared by the acoustic levitation (0.5 g/L), and f particle size distributions for the above two Pt colloids (green for NaBH4 reduction, red for acoustic levitation)Back to article page