Optical extinction spectra of colloid solutions with Pd (dashed line) and Pt NPs (full line). The peak at 280 nm is caused by surface plasmon resonance in Pd NPs. The peak at 265 nm is caused by surface plasmon resonance in Pt NPs. The peak at 230 nm is caused by absorption in the surfactant AOT organic compound.
Zdansky Nanoscale Research Letters 2012 7:415 doi:10.1186/1556-276X-7-415