I want to know the best method to use in washing biosynthesized silver nanoparticles to achieve the best purity level before it is taken for instrumental characterization.
Use aloe-vera, as a green source for silver nano particles as reported by several researchers and dialyze the synthesized solution to attain high purity level.
Try doing the TGA analysis followed by sintering the synthesized nanoparticles at the observed high temperature. Sintering helps in attaining the demanded crystalinity and phase. In addition, all the organic impurities will be washed away.