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. Author manuscript; available in PMC: 2013 May 30.
Published in final edited form as: Chem Eng J. 2011 Jun 1;170(2-3):547–554. doi: 10.1016/j.cej.2011.01.099

Fig. 3.

Fig. 3

(a) XRD patterns of the 25Ag/SiO2 composite nanoparticles resulting from FSP of three different precursor compositions. Sharp Ag peaks with broad base indicate a bimodal crystal size distribution [29] and come here from FSP of Ag-nitrate solutions. (b) Optical absorption spectra of aqueous suspensions containing the 25Ag/SiO2 nanoparticles made by FSP from all precursor solutions. The peak position of the plasmon absorption band is red-shifted for larger nanosilver particles and the bands are broader for nanosilver with bimodal size distributions made by FSP of inexpensive Ag-nitrate precursors (dotted and broken lines).