Green Synthesis of Silver Nanoparticles and Study of Their Antimicrobial Properties

Journal Article · Thu Feb 15 04:00:00 EST 2018 · Journal of Polymers and the Environment

DOI:https://doi.org/10.1007/S10924-017-0962-0· OSTI ID:22788262

Redhwi, Halim Hamid ^[1]; Achilias, Dimitris S.; Kosmidou, Elena; Vakalopoulou, Eythimia; Ioannidou, Maria D. ^[2]

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1. King Fahd University of Petroleum and Minerals, Chemical Engineering Department (Saudi Arabia)
2. Aristotle University of Thessaloniki, Laboratory of Organic Chemical Technology, Department of Chemistry (Greece)

One of the major disadvantages of polymers when used in food-contact applications is that they are very susceptible to microbial attack. On the other hand, silver nanoparticles have received increased attention as novel antimicrobial agents. Therefore, the introduction of silver nanoparticles into conventional polymers results in new materials with improved properties. In this investigation, colloidal silver nanoparticles using an environmentally friendly procedure were synthesized. An aqueous solution of AgNO{sub 3} was used as a silver precursor with ‘green’ reducing agents either different types of honey, or β-D-glucose. In the first case, different pH values, as well as the addition of poly(ethylene glycol), PEG were studied, while in the latter, the effect of reduction time in the presence of PEG with various average molecular weights was examined. Properties of the nanoparticles were measured using X-Ray diffraction, UV–Vis and FTIR spectroscopy. Using honey it seems that spherical particles are produced with the smaller average particle size obtained at pH 8.5. Use of honey has the advantage of being a natural product, although its main drawback is that its composition varies and it cannot be predefined to result in reproducible results. Use of β-D-glucose results in stable silver nanoparticles with small average particle size after 24 h reduction. The addition of low molecular weight PEG seems to be beneficial in the production of stable nanoparticles. Finally, the antimicrobial activity of the nanoparticles produced was investigated at different concentrations on both Gram positive and negative bacteria, such as Bacillus cereus, Bacillus subtilis, Escherichia coli and Staphylococcus aureus.

• OSTI ID: 22788262
• Journal Information: Journal of Polymers and the Environment, Journal Name: Journal of Polymers and the Environment Journal Issue: 2 Vol. 26; ISSN 1566-2543
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIMICROBIAL AGENTS
AQUEOUS SOLUTIONS
BACILLUS CEREUS
BACILLUS SUBTILIS
ENVIRONMENTAL QUALITY
ESCHERICHIA COLI
FOURIER TRANSFORM SPECTROMETERS
GLUCOSE
MOLECULAR WEIGHT
NANOPARTICLES
PARTICLE SIZE
PH VALUE
POLYETHYLENE GLYCOLS
REDUCING AGENTS
SILVER
SILVER NITRATES
STAPHYLOCOCCUS
SYNTHESIS
X-RAY DIFFRACTION