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Journal of Materials Science

, Volume 44, Issue 23, pp 6325–6332 | Cite as

Nanostructure characterization of polymer-stabilized gold nanoparticles and nanofilms derived from green synthesis

  • Iliana Medina-Ramírez
  • Maribel González-García
  • Jingbo Louise LiuEmail author
Article

Abstract

The fabrication and characterization of gold (Au) nanostructured materials draws significant attention because of their distinctive properties and their technological applications. The first objective of this study is to fabricate polymer-stabilized Au nanoparticles and nanofilms (PAN) through a cost effective and green synthetic methodology. In this study, the gold trication (Au3+) can be spontaneously converted into metallic gold atom using a non-toxic reductant (ascorbic acid). The ultrafine Au clusters were formed and stabilized through metallic bonds in the colloidal suspension, which was then deposited on a micro-glass or polymer-bead substrate to prepare thin films. It was found that ascorbic acid was the best reducing agent due to its rapid rate, spontaneity of reaction, and its non-toxic nature. In order to prevent aggregation of the nanoparticles, a dispersing agent (gum Arabic) was used. The second objective of this study was to analyze the PAN using a number of state-of-the-art instrumentation techniques and analytical approaches, such as X-ray powder diffraction (XRD), atomic force microscopy (AFM), scanning and transmission electron microscopy (SEM and TEM), ultraviolet–visible (UV–Vis) spectroscopy, and ZetaPALS. These techniques were applied to evaluate specific properties of the PAN, such as characterization of its crystalline phase, surface topology, characteristic plasmon, particle size distribution, and stability. From this study, it can be concluded that the ultrafine Au nanoparticles and uniform films were obtained using the green chemistry method. The ultrafine Au particles are highly stabilized and monodispersed as demonstrated by their high absolute value of zeta potential.

Keywords

Atomic Force Microscopy Colloidal Suspension Energy Dispersive Spectrometer Metallic Gold Surface Plasmon Band 

Abbreviations

Au

Gold

GA

Gum arabic

NPs

Nanoparticles

PAN

Polymer-stabilized Au nanoparticle and nanofilm

XRD

X-ray powder diffraction

AFM

Atomic force microscopy

SEM

Scanning electron microscopy

TEM

Transmission electron microscopy

EDS

X-ray energy dispersive spectroscopy

UV–Vis

Ultraviolet visible spectroscopy

Notes

Acknowledgements

The Academia Mexicana de Ciencias (AMC) y Fundación México Estados Unidos para la Ciencia (FUMEC), and the College of Arts and Sciences at Texas A&M University-Kingsville (TAMUK), Research and Development Fund (RDF) are duly acknowledged for their financial assistance. The authors are also grateful for the technical support and facility access provided by the South Texas Environmental Institute, the Department of Chemistry at TAMUK, and the Microscope and Imaging Center and Materials Characterization Facility at Texas A&M University, College Station.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Iliana Medina-Ramírez
    • 1
  • Maribel González-García
    • 2
  • Jingbo Louise Liu
    • 2
    Email author
  1. 1.Department of ChemistryUniversidad Autónoma de AguascalientesAguascalientesMexico
  2. 2.Department of ChemistryTexas A&M University-KingsvilleKingsvilleUSA

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