alexa Simultaneous Analysis Of Heavy Metal Ions Using Conductive Polymers Comprising Graphene | 18719
ISSN: 2155-9872

Journal of Analytical & Bioanalytical Techniques
Open Access

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5th International Conference and Exhibition on Analytical & Bioanalytical Techniques
August 18-20, 2014 DoubleTree by Hilton Beijing, China

Suk-Ho Baek, Hui-Bog Noh, Min-Ouk, Park, Dong-Min Kim and Yoon-Bo Shim
Posters: J Anal Bioanal Tech
DOI: 10.4172/2155-9872.S1.018
Abstract
Functionalized polyterthiophenes comprising graphene were synthesized in a solution containing graphene and functionalized tertiophene monomers, 3?-(2-aminopyrimidyl)-2,2?:5?,2??-terthiophene (APTT), 3?-2(carboxylic acid)- 2,2?:5?,2??-terthiophene (TTCA), and 3?-(p-benzoic acid)-2,2?:5?,2??-terthiophene (TTBA). Interaction between functional groups of graphene oxide (GO) and the monomers in an aprotic nonaqueous solution offers the formation of uniform and stable polymer film. Spectroelectrochemical properties of the conductive polymers were characterized employing in-situ UV- Visible spectroscopy. Morphologies and compositions of the polymer materials were confirmed using SEM, FE-TEM, and XPS analyses, which show homogeneous and functionalized poly(terthiophenes-GO) composition. We observed that the heavy metal ions (Cd(II), Pb(II), Cu(II), and Hg(II)) can be deposited on the poly(APTT-GO) layer via the complex formation reaction. Thus, stripping voltammetry was performed for the analysis of the ions in very low concentration by scanning the potential from -1.0 to +0.5 V after pre-concentration. The results show the distinct anodic stripping peak of each ion at -0.75, -0.49, -0.05, +0.15 V, corresponding to Cd(II), Pb(II), Cu(II), and Hg(II) ions, showing detection limit of ~1ppb.
Biography
Suk-Ho Baek received his Bachelor degree in 2013 from the Kosin University and now he is a Master student in the Pusan National University. His research interests include heavy metal ions sensors for chemical real time applications.
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