We synthesize silver nanoparticles using silver nitrate salts, while synthesis of SNPs absorbance increases but Surface Plasmon Resonance (SPR) peak was same but size of SNPs changes, is there any possible explanation...
Surface plasmon resonance appears as a result of the size effect. It can be affected by an adsorbable substance. If the amount of adsorbed substance that absorbs in the visible region of the spectrum increases, then this substance can influence absorption as a result of SPR.