Respected scholar, I have synthesized bare silver nanoparticles using sodium borohydride reduction at room temperature and measured their UV-Vis absorption spectrum. The spectrum showed two distinct peaks - a sharp peak at 260nm and a broader, lower intensity peak at 411nm. What could account for the presence of these two separate surface plasmon resonance signals?
Any insights you could provide regarding the origin and assignment of multiple SPR peaks would be greatly appreciated.
Do not worry, everything is correct in your data, but there is only one surface plasmon resonance peak at 411nm, the other one is attributed to the stabilizing agent absorption . Some of our recent research in the fieldArticle Green synthesis of silver nanoparticles using paper wasp‘s h...
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Respected Sir @Dmitriy Berillo, I didn't use any stabilizing agent for AgNPs.
No one should be working with metallic nanosystems without knowing about stabilization agents, zeta potential, surface charge, oxidized ions, dissolved oxygen, electrostatic stabilization, steric stabilization, etc.
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