Design of a nanostructured electromagnetic polyaniline–keggin iron–clay composite modified electrochemical sensor for the nanomolar detection of ascorbic acid

Abstract

This article demonstrates the design and fabrication of an electrochemical sensor based on a platinum electrode for ascorbic acid (AA) modified by an electromagnetic polyaniline–Keggin iron–clay (PPICS) composite. The polyaniline–polyhydroxy iron–clay composite was prepared by the polymerization of [Anilinium]+[PDPSA]− in the presence of Keggin iron intercalated clay and was characterized for its particle size, morphology, electrical conductivity, and saturation magnetization. The oxidation potential of AA was observed at +0.4 V on the bare electrode and shifted to a negative potential of −0.32 V on the modified electrode. Common possible interferences of the sample matrices were tested, and the results reveal that the PPICS‐modified electrode exhibited a high selectivity and sensitivity toward AA. This unique low‐cost and user‐friendly sensor was validated for the nanomolar detection of AA present in real samples. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40936.

Gold nanoparticle patterned on PANI nanowire modified transducer for the simultaneous determination of neurotransmitters in presence of ascorbic acid and uric acid

“…The peaks observed at 1319, 1044, and 638cm −1 were ascribed to symmetric, asymmetric stretching vibrations of OSO, SO, groups of PDPSA and …. interactions between the polymer chain and PDPSA . These observations confirms the formation of PANIS (PANI doped with PDPSA).…”

“…PANIS showed two peaks at 1589 and 1490 cm −1 corresponds to the CC stretching of quinoid and benzenoid rings, respectively . The peaks observed at 1135, 822 cm −1 attributed to the aromatic in‐plane bending vibrations of C‐H, and the out‐of plane deformation of C‐H in the 1,4‐disubstituted benzene ring, respectively . The peaks observed at 1319, 1044, and 638cm −1 were ascribed to symmetric, asymmetric stretching vibrations of OSO, SO, groups of PDPSA and ….…”

“…Anilinium‐PDPSAprepared by mixing aniline and PDPSA in water.PDPSA contains two hydrophilic groups ( and OH) on the aromatic ring along with long alkyl chain in the para position of SO 3 H and metato the OH group . Aniline forms a salt with amphiphilic sulphonic acid (PDPSA), by an acid‐base reactionbetween the SO 3 H groups of 3‐PDPSA and the NH 2 groups of aniline .…”

Accuracy and Resolution Analysis of a Direct Resistive Sensor Array to FPGA Interface

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Sensing and surface morphological properties of a poly[(9,9‐dioctylfluorenyl‐2,7‐diyl)‐co‐bithiophene] liquid‐crystalline polymer for optoelectronic applications

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