Effect of pH on the Size of Gold Nanoparticles
نویسندگان
چکیده
The effect of pH on the size of gold nanoparticles was observed in this paper. We synthesized biocompatiable gold nanoparticles by reducing gold chloride with ascorbic acid. Colloidal gold nanoparticles produced in this method were stabilized by non toxic gum arabic. Formation of gold nanoparticles was confirmed with the help of UVvisible spectrophotometer. Peak wavelength was observed between 530 and 540 nm. We achieved size variations between 10 and 23 nm when the concentration of ascorbic acid was varied. Morphology and mean diameter of the particles were observed with the help of Scanning electron microscope and particle size analyzer respectively. Capping of gum arabic on gold naoparticles was confirmed with the help of FTIR spectroscopy.
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