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Related Concept Videos

Formation of Complex Ions03:45

Formation of Complex Ions

A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...

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Related Experiment Video

Updated: Jun 20, 2026

Generation of Zerovalent Metal Core Nanoparticles Using n-(2-aminoethyl)-3-aminosilanetriol
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Published on: February 11, 2016

Biosynthesis of silver nanoparticles using Eclipta leaf.

Anal K Jha1, Kamlesh Prasad, Vikash Kumar

  • 1University Dept. of Chemistry, T.M. Bhagalpur University, India.

Biotechnology Progress
|September 3, 2009
PubMed
Summary
This summary is machine-generated.

Green synthesis of silver nanoparticles using Eclipta leaves is reported. This low-cost, reproducible method yields small, spherical nanoparticles, offering an eco-friendly approach for large-scale production.

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Gold Nanostar Synthesis with a Silver Seed Mediated Growth Method
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Last Updated: Jun 20, 2026

Generation of Zerovalent Metal Core Nanoparticles Using n-(2-aminoethyl)-3-aminosilanetriol
08:12

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Published on: February 11, 2016

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Gold Nanostar Synthesis with a Silver Seed Mediated Growth Method
12:39

Gold Nanostar Synthesis with a Silver Seed Mediated Growth Method

Published on: January 15, 2012

Area of Science:

  • Green Chemistry
  • Nanotechnology
  • Materials Science

Background:

  • Silver nanoparticles (AgNPs) exhibit unique properties for various applications.
  • Conventional synthesis methods often involve hazardous chemicals and high costs.
  • Developing eco-friendly and cost-effective synthesis routes is crucial.

Purpose of the Study:

  • To report a green, low-cost, and reproducible synthesis of silver nanoparticles.
  • To characterize the synthesized silver nanoparticles.
  • To explore the potential of Eclipta leaves for nanoparticle synthesis.

Main Methods:

  • Synthesis of silver nanoparticles using Eclipta leaves extract at room temperature.
  • Characterization using X-ray (XRD) and Transmission Electron Microscopy (TEM).
  • UV-visible spectroscopy for optical properties and Williamson-Hall analysis for lattice strain estimation.

Main Results:

  • Successfully synthesized spherical silver nanoparticles with sizes ranging from 2-6 nm.
  • Confirmed the formation of AgNPs through XRD and TEM analyses.
  • Observed surface plasmon resonance at 419 nm and estimated lattice strain of 0.0045.

Conclusions:

  • Eclipta leaves provide an effective and sustainable precursor for green synthesis of silver nanoparticles.
  • The room temperature synthesis is reproducible and amenable to large-scale production.
  • This method offers an environmentally friendly alternative for nanoparticle fabrication.