Abstrakt

Synthesis and optical properties study of colloidal silver nanoparticles at different AgNO3 concentration by chemical reduction method

Surender Duhan


Colloidal silver nanoparticles were obtained by chemical reduction of silver nitrate in water with sodium borohydride (NaBH4) in the presence of sodium dodecyl sulfate (SDS) as a stabilizer. The obtained nanoparticles were characterized by their UV-VIS-NIR absorption spectra, Transmission electron micrograph (TEM) and Scanning electron micrograph (SEM) images. The UV-VIS-NIR absorption spectra showed that NaBH4 served not only as a reducing agent but also as a stabilizer, which protects the aggregation of silver nanoparticles. The TEM and SEM images showed that the particles were dispersed better with increasing the NaBH4 concentration.


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