Figure 5.

a High-resolution TEM images of the samples prepared by NaBH₄ = 1,100 μL and PVP = 6 mL. The sample was pre-adsorbed on the amino-terminated silica film–coated copper grids to increase the adhesion of anionic nanoprisms. The subplots b–d show the individual nanostructure with a triangular shape. The insets show the electron diffraction pattern taken from the individual nanostructure. e HRTEM image of a silver nanoprism by directing the electron beam perpendicular to the flat face.