Journal
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 70, Issue -, Pages 628-636Publisher
ELSEVIER
DOI: 10.1016/j.msec.2016.09.034
Keywords
Nanosheets; Iron(II) sulfide; Reduced graphene oxide; Dopamine; Acetaminophen
Categories
Funding
- Natural Science Foundation of China [U1304211, 51674105, 51604098]
- China Postdoctoral Science Foundation [2015M570629, 2016T90665]
- Program for Science & Technology Innovation Talents in Universities of Henan Province [17HASTIT030]
- Henan Key Science and Technology Program of China [132102210256]
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In this paper, FeS nanoparticles anchored on reduced graphene oxide (rGO) nanosheets are synthesized via a facile direct-precipitation method. For the first time, a novel electrochemical sensor is developed based on FeS/rGO nanosheets modified glassy carbon electrode (GCE). It has been proved that the resultant FeS/rGO/GCE sensor is very suitable for the individual and simultaneous measurement of dopamine (DA) and acetaminophen (AC) and delivers excellent anti-interference ability to ascorbic acid (AA) and uric acid (UA). Under optimum conditions with differential pulse voltammetry method, a broad linear response versus the concentrations of DA and AC has been observed in the ranges of 2.0 to 250.0 mu M and 5.0 to 300.0 mu M, respectively. The detection limits for DA and AC are 0.098 mu M and 0.18 mu M, respectively. Furthermore, the as-obtained sensor has been successfully utilized in real samples and satisfactory results have been achieved. Consequently, by virtue of its outstanding electrocatalytic activity, excellent sensitivity, and long time stability, the as-obtained FeS/rGO modified electrode can be considered as a new promising DA and AC sensor. (C) 2016 Elsevier B.V. All rights reserved.
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