Antibacterial performance of Ag nanoparticles and AgGO nanocomposites prepared via rapid microwave-assisted synthesis method

Soon Wei Chook, Chin Hua Chia, Sarani Zakaria, Mohd. Khan Ayob, Kah Leong Chee, Nay Ming Huang, Hui Min Neoh, Hong Ngee Lim, A. Rahman A. Jamal, Raha Mohd Fadhil Raja Abdul Rahman

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

Silver nanoparticles and silver-graphene oxide nanocomposites were fabricated using a rapid and green microwave irradiation synthesis method. Silver nanoparticles with narrow size distribution were formed under microwave irradiation for both samples. The silver nanoparticles were distributed randomly on the surface of graphene oxide. The Fourier transform infrared and thermogravimetry analysis results showed that the graphene oxide for the AgNP-graphene oxide (AgGO) sample was partially reduced during the in situ synthesis of silver nanoparticles. Both silver nanoparticles and AgGO nanocomposites exhibited stronger antibacterial properties against Gram-negative bacteria (Salmonella typhi and Escherichia coli) than against Gram-positive bacteria (Staphyloccocus aureus and Staphyloccocus epidermidis). The AgGO nanocomposites consisting of approximately 40 wt.% silver can achieve antibacterial performance comparable to that of neat silver nanoparticles.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalNanoscale Research Letters
Volume7
DOIs
Publication statusPublished - 2012

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Silver
Oxides
Graphene
Nanocomposites
nanocomposites
graphene
silver
Microwaves
Nanoparticles
microwaves
nanoparticles
oxides
synthesis
Microwave irradiation
bacteria
Bacteria
salmonella
Salmonella
irradiation

Keywords

  • Antibacterial properties
  • Graphene oxide
  • Microwave irradiation
  • Nanocomposites
  • Silver nanoparticles

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Antibacterial performance of Ag nanoparticles and AgGO nanocomposites prepared via rapid microwave-assisted synthesis method. / Chook, Soon Wei; Chia, Chin Hua; Zakaria, Sarani; Ayob, Mohd. Khan; Chee, Kah Leong; Huang, Nay Ming; Neoh, Hui Min; Lim, Hong Ngee; A. Jamal, A. Rahman; Rahman, Raha Mohd Fadhil Raja Abdul.

In: Nanoscale Research Letters, Vol. 7, 2012, p. 1-7.

Research output: Contribution to journalArticle

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AU - Zakaria, Sarani

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AU - Chee, Kah Leong

AU - Huang, Nay Ming

AU - Neoh, Hui Min

AU - Lim, Hong Ngee

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AB - Silver nanoparticles and silver-graphene oxide nanocomposites were fabricated using a rapid and green microwave irradiation synthesis method. Silver nanoparticles with narrow size distribution were formed under microwave irradiation for both samples. The silver nanoparticles were distributed randomly on the surface of graphene oxide. The Fourier transform infrared and thermogravimetry analysis results showed that the graphene oxide for the AgNP-graphene oxide (AgGO) sample was partially reduced during the in situ synthesis of silver nanoparticles. Both silver nanoparticles and AgGO nanocomposites exhibited stronger antibacterial properties against Gram-negative bacteria (Salmonella typhi and Escherichia coli) than against Gram-positive bacteria (Staphyloccocus aureus and Staphyloccocus epidermidis). The AgGO nanocomposites consisting of approximately 40 wt.% silver can achieve antibacterial performance comparable to that of neat silver nanoparticles.

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