Figure 1.

Photographs of (a) GO dispersion in water, (b) rGO dispersion in SDS solution, c rGO-Au nanocomposites in SDS solution. d UV–Vis absorptions of rGO (black line) and rGO-Au nanocomposites (red line) in SDS solution.

Dong et al. Nanoscale Res Lett 2011 6:60   doi:10.1007/s11671-010-9806-8