Results
Title

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

Authors

Mogha, Navin; Sahu, Vikrant; Sharma, Meenakshi; Sharma, Raj; Masram, Dhanraj

Abstract

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.

Subjects

VITAMIN C; LANTHANUM oxide; GRAPHENE oxide; NANOCOMPOSITE materials; OXIDATION; CATALYSIS

Publication

Applied Biochemistry & Biotechnology, 2014, Vol 174, Issue 3, p1010

ISSN

0273-2289

Publication type

Academic Journal

DOI

10.1007/s12010-014-0986-z