Research Article

Magnetic Cobalt and Cobalt Oxide Nanoparticles in Hyperbranched Polyester Polyol Matrix

Figure 6

UV/vis spectra of aqueous solutions containing CoNPs after Co8(BH20) reduction (a), CoNPs after Co10(BH20) reduction (b), CoNPs after Co12(BH20) reduction (c), and CoNPs after Co16(BH20) reduction (d).