Journal
MICROCHIMICA ACTA
Volume 183, Issue 2, Pages 597-603Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-015-1680-8
Keywords
Amalgamation; Silver nanoparticles; Nanocomposite; Localized surface plasmon resonance; XRD; TEM; Raman spectroscopy
Categories
Funding
- UMRG Programme [RP007C/13AFR]
- University Malaya [PG074-2013B, FL017-2011]
- Ministry of Higher Education of Malaysia [UM.C/625/1/HIR/MOHE/05]
- University of Malaya Research Grant
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The authors describe the ultrasound-assisted synthesis of a graphene oxide-silver (GO-Ag) nanocomposite for the determination of mercury(II) (Hg(II)) using spectrophotometriy. The nanocomposite was characterized by UV-visible absorption spectra, XRD, TEM and Raman analyses. The spectral and colorimetric methods were performed for the optical determination of Hg(II). The reduction of absorption intensity with blue shift in the absorption band of Ag nanoparticles and the color change of the yellow nanocomposite solution were observed during the determination of Hg(II). The limit of detection was found to be 0.59 mu M. The GO-Ag nanocomposite exhibited good selectivity toward the determination of Hg(II) in the presence of higher concentration of other environmentally relevant heavy metal ions.
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