Green Synthesis of Silver Nanoparticles Using Cyanobacteria and Evaluation of Their Photocatalytic and Antimicrobial Activity

Keskin N. O. S., Kilic N. K., DÖNMEZ G., Tekinay T.

JOURNAL OF NANO RESEARCH, vol.40, pp.120-130, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 40
  • Publication Date: 2016
  • Doi Number: 10.4028/
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.120-130
  • Keywords: Antimicrobial activity, Biosynthesis, Dye decolorization, Synechococcus sp., Silver nanoparticle, EXTRACELLULAR SYNTHESIS, MAGNETIC NANOPARTICLES, LEAF EXTRACTS, GOLD, BIOSYNTHESIS, ALGA, MORPHOLOGY, BACTERIA
  • Ankara Haci Bayram Veli University Affiliated: No


Nowadays, green and efficient synthetic strategies have been gaining great interest for the synthesis of nanoparticles. In this study, the biosynthesis of silver nanoparticles and its photocatalytic activity for photodegradation of organic dye and antimicrobial property was studied. The initial syntheses of Ag nanoparticles were characterized by UV-Vis spectrophotometer and showed the surface plasmon resonance band at 430-450 nm. Attenuated Total Reflection Fourier Transform Infrared Spectroscopy (ATR-FTIR) study showed evidence that proteins are possible reducing agents. The structure of AgNPs was determined by Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM). SEM and TEM studies revealed the synthesized AgNPs to be spherical. The AgNPs exhibited photocatalytic activity for photodegradation of organic dye such as Methylene Blue. Approximately 18% degradations of methylene blue within 4 h was observed with biosynthesized Ag nanoparticles in the photocatalytic degradation process.