Synthesis of silver nanoparticles from fish scale extract of cyprinus carpio and its decolorization activity of textile dyes

There is an increasing commercial demand for nanoparticles due to their wide applicability in various areas such as electronics, catalysis, chemistry, energy, and medicine. This work deals with the synthesis and characterization of silver nanoparticles (AgNPs) using Cyprinus carpio fish scale extract to de-colorization of textile dyes. The synthesized nanoparticles were characterized by using UV-Vis absorption spectroscopy, FT-IR and SEM analysis. The reaction mixture turned to a brownish gray color after 5 hrs of incubation and exhibits an absorbance peak around 450 nm characteristic of AgNPs. The SEM analysis showed AgNPs were pure and polydisperse and the size were ranging from 200 nm. The approach of biosynthesis seems to be cost efficient, ecofriendly and easy alternative to conventional methods of AgNPs synthesis. Dye degrading efficiency of AgNPs was assayed against azo dyes. At the end of 24 hrs AgNPs showed 48.38% of degradation. As the days of incubation increases from 1 day to 7 days, the degradation efficiency was also i ncreased from 48.38% to 93.54% at the end of 7th day of incubation. Further, the FT-IR results confirmed that, the complex, toxic azo dyes are degraded into simple, non-toxic compounds