Green Synthesis of Silver Nanoparticles Decorated With Exfoliated Graphite Nanocomposites

Document Type : Original Article

Authors

1 Technical Engineering College-Baghdad, Middle Technical University, Baghdad, (MTU) Iraq.

2 Radiological Techniques Department, Health and Medical Technology College-Baghdad, Middle Technical University, Baghdad, (MTU) Iraq;

Abstract

Abstract

Silver nanoparticles (AgNPs) were prepared by a rapid, simple, and economic microwave assisted synthetic route using aqueous spent black tea leaves extract and silver nitrate solution. The exfoliated graphite (EG) was rapidly and efficiently prepared from natural graphite using domestic microwave oven. Natural graphite powder was hand mixed with KMnO4 and HNO3 at a weight ratio of 1:1:2 for 5 min to produce graphite intercalation compound (GIC).The GIC was then washed and dried at 110 °C for 6 hrs. The Exfoliated graphite (EG) was prepared by rapid heating of graphite intercalation compound (GIC) in a domestic microwave oven at power of 540 and 700 W for 60sec. Silver nanoparticles was then loaded on the exfoliated graphite to obtain exfoliated graphite decorated with silver nanoparticles nanocomposite (EG/AgNPs). The prepared materials were characterized by ultraviolet−visible spectrophotometry, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). The prepared EG/AgNPs nanocomposites showed uniform dispersion of Ag nanoparticles on the surface of expanded graphite with little agglomeration.

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Egyptian Journal of Chemistry
Volume 65, Issue 132 - Serial Number 13
Special Issue: Chemistry and Global Challenges (Part B)
December 2022
Pages 651-659

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History

  • Receive Date: 27 May 2022
  • Revise Date: 27 June 2022
  • Accept Date: 13 July 2022

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