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Reference type: Journal
Authors: Yang YK, Fang GZ, Wang XM, Zhang FY, Liu JM, Zheng WJ, Wang S
Article Title: Electrochemiluminescent graphene quantum dots enhanced by MoS2 as sensing platform: a novel molecularly imprinted electrochemiluminescence sensor for 2-methyl-4-chlorophenoxyacetic acid assay.
Publication date: 2017
Journal: Electrochimica Acta
Volume: 228
Page numbers: 107-113.
DOI: 10.1016/j.electacta.2017.01.043
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0013468617300439

Abstract: The ECL properties and application of a novel luminescent material molybdenum disulfide-graphene quantum dots (MoS2-GQDs) hybrid nanocomposite was reported for the first time. The hybridization of MoS2 and GQDs endowed nanocomposite with structural and compositional advantages for boosting the ECL performance of GQDs. Impressively, the ECL could be remarkable enhanced using MoS2-GQDs hybrid nanocomposite, which was ~13, ~185 and ~596-folds larger than the ECL intensity of GQDs, MoS2 modified electrodes and bare electrode, respectively. Subsequently, as a sensing platform, the MoS2-GQDs hybrid nanocomposite was applied to fabricate molecularly imprinted electrochemiluminescence sensor for the ultrasensitive and selective determination of 2-methyl-4-chlorophenoxyacetic acid. Under optimal conditions, the detection limit of the prepared sensor was 5.5 pmol L-1 (S/N = 3) within a linear concentration range of 10 pmol L-1 - 0.1 μmol L-1. The developped sensor exhibited high sensitivity, good selectivity, reproducibility and stability, suggesting the potential for detecting pesticides and veterinary drugs at trace levels in food safety and environmental control
Template and target information: 2-methyl-4-chlorophenoxyacetic acid
Author keywords: Graphene quantum dots, molybdenum disulfide, Electrochemiluminescence sensor, Molecularly imprinted polymers, 2-methyl-4-chlorophenoxyacetic acid


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