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Volume 4
Nano Research & Applications
ISSN: 2471-9838
Page 91
JOINT EVENT
August 16-18, 2018 | Dublin, Ireland
&
12
th
Edition of International Conference on
Nanopharmaceutics and Advanced Drug Delivery
25
th
Nano Congress for
Future Advancements
Nano Congress 2018
&
Nano Drug Delivery 2018
August 16-18, 2018
Electroanalytical detection of heavy metals using metallophthalocyanine and silica coated iron oxide
composites
Nolwazi Nombona
University of Pretoria, South Africa
T
he monitoring of heavy metal ions particularly in water is important in safeguarding the environment and humans from
the toxic effects these metal ions pose. This work describes the synthesis, characterization and electrocatalytic properties of
silica coated iron oxide nanoparticles (Si-NP) in the presence of cobalt or iron phthalocyanines (MPc) for heavy metal (HM)
detection. TEM, XRD, XPS and VSM confirmed the successful synthesis of Si-NP with an average diameter of 12.07 nm. The
electrochemical sensing properties of MPc/Si-NP modified glassy carbon electrodes (GCE) were assessed for HM detection.
Differential pulse anodic stripping voltammetry (DPASV) studies indicated detection limits that compared positively with
literature. The FePc/Si-NP composite showed the lowest detection limits of 3.66 μg L-1, 11.56 μg L-1, 2.28 μg L-1, 4.54 μg L-1
for arsenic (As), cadmium (Cd), mercury (Hg) and lead (Pb), respectively. Both composites displayed reproducible signals for
the simultaneous detection of the HMs. These composites offer a cheap and simplistic sensing alternative for HM analysis.
nolwazi.nombona@up.ac.zaNano Res Appl 2018, Volume 4
DOI: 10.21767/2471-9838-C3-015