Fig. 2. Temperature-dependence of NP size and shape. TEM micrographs of Co3O4 nanoparticles synthesized with a precipitation step performed at temperatures of (a) 50 °C, (b) 60 °C, (c) 70 °C, (d) 80 °C, (e) 90 °C and (f) 100 °C (same scale bar). Trends in the temperature-dependent modulation of particle size and shape are indicated by grey arrows.
