10.1007/s40097-016-0212-3

Characterization and optical studies of PVP-capped silver nanoparticles

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  • Ali Mirzaei*1,
  • Kamal Janghorban1,
  • Babak Hashemi1,
  • Maryam Bonyani1,
  • Salvatore Gianluca Leonardi2,
  • Giovanni Neri2,
  1. Department of Materials Science and Engineering, Shiraz University, Shiraz, IR
  2. Department of Engineering, University of Messina, Messina, 98166, IT
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Published in Issue 24-11-2016

How to Cite

Mirzaei, A., Janghorban, K., Hashemi, B., Bonyani, M., Leonardi, S. G., & Neri, G. (2016). Characterization and optical studies of PVP-capped silver nanoparticles. Journal of Nanostructure in Chemistry, 7(1 (March 2017). https://doi.org/10.1007/s40097-016-0212-3
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Abstract

Abstract In this study, the size-controlled synthesis of silver nanoparticles (Ag NPs) via chemical reduction method by NaBH 4 as a reducing agent and poly(vinyl pyrrolidone) or PVP as a stabilizing agent is reported. Changing of ratios between reducing agent and stabilizing agent relative to AgNO 3 -optimized conditions for synthesis of stable Ag NPs was studied. The formation of Ag NPs was tracked by UV–Vis spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and photoluminescence (PL) spectroscopy. Particle size distribution was studied by particle size analyzer, and the morphology was examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The optical properties of the synthesized Ag NPs were also investigated. The optimized Ag NPs were very stable even after 1 month that was due to effective stabilization by PVP molecules. The mechanism of Ag NPs formation and stabilization is discussed in detail.

Keywords

  • Ag NPs,
  • PVP,
  • Chemical reduction,
  • Optical properties
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