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Ultraviolet-visible absorption spectra of silver/montmorillonite/chitosan bionanocomposite suspension for different AgNO3 concentrations: (A1) 0.5%, (A2) 1.0%, (A3) 1.5%, (A4) 2.0%, (A5) 5.0%, and (A0) silver nitrate/montmorillonite/chitosan bionanocomposite suspension in the absence of sodium borohydride.
