Journal of Nanomaterials / 2017 / Article / Fig 4

Research Article

The Effects and Role of Polyvinylpyrrolidone on the Size and Phase Composition of Iron Oxide Nanoparticles Prepared by a Modified Sol-Gel Method

Figure 4

TEM micrograph of the P6 (a), P12 (b), P18 (c), and P24 (d) samples and a unique crystallite of P24 (e) with hexagonal projections, indicating well developed facets (JEOL JEM-1400 at 120 kV).