Journal
RSC ADVANCES
Volume 7, Issue 20, Pages 12144-12149Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra27706c
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Funding
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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Spherical biogenic silver nanoparticles (AgNPs) were synthesized using aqueous green coffee bean extract as a reducing agent. The green coffee bean extract was used for the time to reduce silver ions via a one-step, green, and rapid approach. The prepared AgNPs were characterized via transmission electron microscopy (TEM), atomic force microscopy (AFM), and UV-visible spectroscopy. Dynamic light scattering (DLS) was performed to measure the particle size. These AgNPs exhibit strong antibacterial activity against both Gram-negative and Gram-positive bacteria and the minimum inhibitory concentration (MIC) of AgNPs for Escherichia coli and Staphylococcus aureus are 0.05 mu mol L-1 and 0.1 mu mol L-1, respectively. Furthermore, AgNPs could serve as an effective catalyst for the reduction of 4-nitrophenol to 4-aminophenol in the presence of NaBH4.
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