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Research & Reviews: Journal of Material Sciences | ISSN: 2321-6212 | Volulme 6
November 07-08, 2018 | Atlanta, USA
Materials Science and Engineering
15
th
International Conference and Exhibition on
Applied Crystallography
3
rd
International Conference on
&
Facile one-step synthesis of porous graphitic carbon nitride nanosheets/oxidized multi-wall carbon
nanotubes composite for simultaneous anodic stripping voltammetric detection of heavy metals in
food samples
Vinoth Kumar Ponnusamy
and
Ramalingam Manikandan
Kaohsiung Medical University, Taiwan
W
e demonstrate a facile one-step synthesis of three-dimensional (3D) porous graphitic carbon nitride nanosheets (P-g-
C
3
N
4
-NSs)/oxidized multi-wall carbon nanotubes (O-MWCNTs) composite by simultaneous chemical oxidation of
bulk g-C
3
N
4
-NSs and bulk MWCNTs. This one-step chemical oxidation method results in the simultaneous formation of acid
functional groups on the basal surfaces of both g-C
3
N
4
and MWCNTs and also the formation of the porous structure of P-g-
C
3
N
4
/oxidized MWCNTs composite at the same time. The acid functionalization and surface morphology of the prepared P-g-
C
3
N
4
-NSs/O-MWCNTs composite were examined using attenuated total reflectance infrared spectroscopy (ATR-IR), X-ray
diffractionmethods (XRD) and high-resolution transmittance electronmicroscopy (HR-TEM).The electrochemical properties
of the P-g-C
3
N
4
/O-MWCNTs composite modified screen-printed electrode (SPE) was studied using cyclic voltammetry (CV),
electrochemical impedance spectroscopy (EIS) and differential pulse voltammetry techniques (DPV). P-g-C
3
N
4
/O-MWCNTs/
SPE exhibits excellent sensitivity and selectivity towards the simultaneous detection of heavy metals (Cd, Hg, Pb & Zn) in food
samples with the detection limits (S/N=3) ranging between 8 to 60ngL
-1
under stripping analysis. The practical feasibility of the
developed sensor was examined for simultaneous detection of heavy metals in various food samples and the obtained results
exhibit good accuracy and good reproducibility. These results imply that the developed composite might be an alternative
sensor material for practical applications in electrochemical detection of heavy metals in foods.
Biography
Vinoth Kumar Ponnusamy has completed his PhD at the age of 26 years from NCHU, Taiwan and Postdoctoral studies from NCHU School of Chemistry. Currently,
he is an Assistant Professor in Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Taiwan. He has published more than 25 papers in
reputed journals and has been serving as an Editorial Board and peer-review member of repute.
analyticalvinoth@gmail.comVinoth Kumar Ponnusamy et al., Res. Rev. J Mat. Sci. 2018, Volume 6
DOI: 10.4172/2321-6212-C8-035