Journal
ACS APPLIED NANO MATERIALS
Volume 4, Issue 7, Pages 6768-6777Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.1c00826
Keywords
cost effective; electrocatalyst; fast kinetics; antibiotic detection; electrochemical sensor
Funding
- National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
- Taiwan MOST [109-2222-E992-002]
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The study presented the preparation of a Co-Fe3O4 NS/GO sensor through a hydrothermal technique, which achieved a low detection limit and excellent sensitivity for chloramphenicol detection in food products, with satisfactory results in analysis of food samples.
Nanoscale materials for electrochemical detection of chloramphenicol (CAP) show a significant interest in antibiotic residue diagnostics research in food products associated with several adverse outcomes. Among various sensing materials, graphene-based materials are highly fascinating due to pi-pi interaction. Herein, we demonstrate the preparation of cobalt-doped Fe3O4 nanospheres deposited on graphene oxide (Co-Fe3O4 NS/GO) through a facile hydrothermal technique that was reported and then these were utilized and explored for voltammetric sensing of CAP detection in a food product. The Co-Fe3O4 NS/GO-based sensor holds a low limit of detection 1.04 nM and an excellent sensitivity of 5.0788 mu A.mu M-1.cm(-2) with successive rapid electrode performance of selectivity, cycle stability, and reproducibility toward CAP detection. Besides, the voltammetric sensor was then successfully analyzed for CAP detection in food samples with satisfactory results. The proposed voltammetric sensor can be a low-cost effect and promising electrode material for food quality-monitoring applications.
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