Title :
Electrochemical sensor for ascorbic acid based on graphene/CuPc/PANI nanocomposites
Author :
Pakapongpan, S. ; Mensing, J.P. ; Lomas, T. ; Tuantranont, Adisorn
Author_Institution :
Nanoelectron. & MEMs Lab., Nat. Electron. & Comput. Technol. Center, Pathumthani, Thailand
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.
Keywords :
biosensors; electrochemical electrodes; electrochemical sensors; graphene; PANI; SPE; ascorbic acid; biosensor; electrochemical sensor; electrochemical techniques; graphene; nanocomposites; screen printed electrode; Calibration; Compounds; Graphene; Nanobioscience; Polymers; PANI; ascorbic acid; copper phthalocyanine; electrochemical sensor; graphene;
Conference_Titel :
Electron Devices and Solid State Circuit (EDSSC), 2012 IEEE International Conference on
Conference_Location :
Bangkok
Print_ISBN :
978-1-4673-5694-7
DOI :
10.1109/EDSSC.2012.6482864
