Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 252, Issue -, Pages 1016-1025Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2017.06.038
Keywords
Non-enzymatic electrochemical sensor; Pd-CoCNTs; Glucose determination; Hydrogen peroxide determination
Funding
- NSFC [81260639, 21372088]
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A non-enzymatic electrochemical sensor based on in situ formed palladium-cobalt nanoparticles supported over carbon nanotubes (Pd-CoCNTs) was developed for both glucose and hydrogen peroxide detection. Pd-CoCNTs were synthesized by a one-pot pyrolysis process. Transmission electron microscope (TEM) images revealed well distributed palladium nanoparticles (PdNPs) on the Pd-CoCNTs surface with diameters of 2-4 nm. Benefitting from the insitu formed PdNPs, the as-prepared glucose sensor displayed satisfactory performance with sensitivity, selectivity and long-term stability. The linear range for glucose determination was 10 mu M-2.4 mM with a detection limit of 1 mu M. The hydrogen peroxide sensor was also studied and showed a wide linear range with a detection limit of 0.3 mu M. The proposed glucose sensor was successfully used in blood plasma analysis and showed satisfactory results. (C) 2017 Elsevier B.V. All rights reserved.
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