Journal
APPLIED NANOSCIENCE
Volume 10, Issue 8, Pages 2835-2841Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s13204-019-00990-x
Keywords
Gold nanoparticles; Phytosynthesis; Juniper; Plasmonic materials; Transmission electron microscopy
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In this study, we report the green synthesis of gold nanoparticles (AuNPs) with the use of easily available, safe to handle juniper extract (Juniperus communisL.) as a reducing and stabilizer agent. The AuNPs were characterized by UV-Vis absorption spectroscopy, atomic force microscopy (AFM), and transmission electron microscopy (TEM). Their growth was examined by UV-Vis spectroscopy over 24 h during storage at room temperature. Absorption measurements showed that the plasmon resonance wavelength appears around 530 and 700 nm. Electron-dispersive X-ray analysis (EDX) and selected area electron diffraction (SAED) of AuNPs evidenced the presence of Au (fcc) phases. TEM analysis showed spherical AuNPs and gold triangular nanoprisms. Differences in size and shape of the AuNPs were observed. ATR-FTIR confirmed the typical functional groups of polyphenols and their oxidation products on the AuNPs' surface.
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