Figure 6.

a UV–vis spectra of gelatin-AuNPs and gelatin-AuNPs degraded by 2 M chlorhydric acid (Cgelatin: 0.4 wt%). The inset in a is the digital image of Curve 1 (left) and 2 (right) colloids; b TEM image of incompletely degraded gelatin-AuNPs colloid.

Liu et al. Nanoscale Res Lett 2011 6:22   doi:10.1007/s11671-010-9756-1