Sensitive and Reliable Ascorbic Acid Sensing by Lanthanum Oxide/Reduced Graphene Oxide Nanocomposite

A simple strategy for the detection and estimation of ascorbic acid (AA), using lanthanum oxide–reduced graphene oxide nanocomposite (LO/RGO) on indium tin oxide (ITO) substrate, is reported. LO/RGO displays high catalytic activity toward the oxidation of AA, and the synergism between lanthanum oxid...

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Veröffentlicht in:	Applied biochemistry and biotechnology 2014-10, Vol.174 (3), p.1010-1020
Hauptverfasser:	Mogha, Navin Kumar, Sahu, Vikrant, Sharma, Meenakshi, Sharma, Raj Kishore, Masram, Dhanraj T.
Format:	Artikel
Sprache:	eng
Schlagworte:	Ascorbic Acid - chemistry Ascorbic Acid - isolation & purification Biochemistry Biological and medical sciences Biosensors Biotechnology Catalysis Catalytic oxidation Chemistry Chemistry and Materials Science Electrochemistry Fundamental and applied biological sciences. Psychology Graphite - chemistry Lanthanum Lanthanum - chemistry Nanocomposites Nanocomposites - chemistry Nanotechnology Oxides - chemistry Synergism Tin Compounds - chemistry Vitamin C
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Beschreibung
Zusammenfassung:	A simple strategy for the detection and estimation of ascorbic acid (AA), using lanthanum oxide–reduced graphene oxide nanocomposite (LO/RGO) on indium tin oxide (ITO) substrate, is reported. LO/RGO displays high catalytic activity toward the oxidation of AA, and the synergism between lanthanum oxide and reduced graphene oxide was attributed to the successful and efficient detection. Detection mechanism and sensing efficacy of LO/RGO nanocomposite are investigated by electrochemical techniques. Chronoamperometric results under optimal conditions show a linear response range from 14 to 100 μM for AA detection. Commercially available vitamin C tablets were also analyzed using the proposed LO/RGO sensor, and the remarkable recovery percentage (97.64–99.7) shows the potential application in AA detection.
ISSN:	0273-2289 1559-0291
DOI:	10.1007/s12010-014-0986-z