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Updated: Jun 3, 2026

Gold Nanoparticle Synthesis
13:42

Gold Nanoparticle Synthesis

Published on: July 10, 2021

A biologically friendly single step method for gold nanoparticle formation.

Damyanti Sharma1

  • 1Ian Wark Research Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, Adelaide, SA 5095, Australia. Damyanti@uow.edu.au

Colloids and Surfaces. B, Biointerfaces
|April 5, 2011
PubMed
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This study introduces a novel, eco-friendly method for creating gold nanoparticles using lecithin as a natural reductant. This rapid, single-step process eliminates the need for harsh chemicals, yielding stable nanoparticles.

Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Green Chemistry

Background:

  • Growing demand for biocompatible nanomaterials.
  • Need for sustainable and efficient synthesis methods.
  • Limitations of traditional chemical reductants in nanoparticle synthesis.

Purpose of the Study:

  • To develop a biologically friendly, single-step synthesis of gold nanoparticles.
  • To utilize lecithin (Egg phosphatidylcholine) as both a stabilizing agent and a reductant.
  • To investigate the effect of sonication on the synthesis process and nanoparticle characteristics.

Main Methods:

  • Preparation of gold nanoparticles in lecithin/water systems.
  • Utilizing hydrogen tetrachloroaurate (HAuCl4) as the gold precursor.

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Gold Nanoparticle Synthesis
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A Simple Method for the Size Controlled Synthesis of Stable Oligomeric Clusters of Gold Nanoparticles under Ambient Conditions
08:21

A Simple Method for the Size Controlled Synthesis of Stable Oligomeric Clusters of Gold Nanoparticles under Ambient Conditions

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  • Employing sonication (100 W probe) to accelerate the reduction process.
  • Characterization using UV-Vis spectroscopy, Transmission Electron Microscopy (TEM), and Dynamic Light Scattering (DLS).
  • Stabilization of nanoparticles with sodium dodecylsulfate (SDS).

    • Main Results:

    • Successful synthesis of small gold nanoparticles (5-7 nm) in lamellar lecithin phases within 6-7 hours.
    • Sonication reduced synthesis time to seconds, producing larger particles attached to lecithin structures and vesicles.
    • SDS proved to be an effective stabilizer, maintaining nanoparticle stability for up to six months.
    • Demonstrated lecithin's unique role as a biological reductant, eliminating the need for chemical alternatives.

    Conclusions:

    • Lecithin is an effective and sustainable reductant for gold nanoparticle synthesis.
    • Sonication offers a rapid route to nanoparticle formation with distinct morphological characteristics.
    • The developed method provides a biocompatible and efficient approach for producing stable gold nanoparticles.