Publication: Electrochemical sensor for ascorbic acid based on graphene/CuPc/PANI nanocomposites
Issued Date
2012-12-01
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2-s2.0-84875721117
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Mahidol University
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SCOPUS
Bibliographic Citation
2012 IEEE International Conference on Electron Devices and Solid State Circuit, EDSSC 2012. (2012)
Suggested Citation
Saithip Pakapongpan, Johannes Philipp Mensing, Tanom Lomas, Adisorn Tuantranont Electrochemical sensor for ascorbic acid based on graphene/CuPc/PANI nanocomposites. 2012 IEEE International Conference on Electron Devices and Solid State Circuit, EDSSC 2012. (2012). doi:10.1109/EDSSC.2012.6482864 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/14016
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Title
Electrochemical sensor for ascorbic acid based on graphene/CuPc/PANI nanocomposites
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Abstract
In this work, the electrochemical sensor based on graphene/ copper phthalocyanine(CuPc)/ polyaniline(PANI) nanocomposite modified screen printed electrode(SPE) for detection of ascorbicacid (AA) was successfully fabricated. Copper phthalocyanine was immobilized on graphene by using PANI as a matrix. The nanocomposites were characterized by electrochemical techniques such as cyclic voltametry. The sensor exhibited a linear range from 100 μM to 3.6 mM (a correlation coefficient of 0.9967). The sensitivity of the sensor was found to be 22.92 mA M -1 cm -2 and the limit of detection was 8.3 μM (S/N = 3). Moreover, this sensor exhibited good electrocatalytic properties and lower the potential for the oxidation of ascorbic acid which makes it a suitable sensor for detection of ascorbic acid. The performance of this sensor could provide a promising platform for the sensor or biosensor designs for AA detection. © 2012 IEEE.