期刊
RSC ADVANCES
卷 11, 期 26, 页码 15565-15572出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ra02450g
关键词
-
资金
- Ministry of Information and Communication Technology, Government of Bangladesh (Innovation Fund)
The study presents a composite material composed of graphene oxide sheets and gold nanoflowers for sensitive and selective detection of the chloramphenicol antibiotic drug. The morphological structure of the composite material was characterized using various techniques, and the proposed electrode demonstrated excellent performance in electrochemical detection of CAP.
Here we introduce a composite material that consists of graphene oxide (GO) sheets crosslinked with N-hydroxysuccinimide (NHS) and functionalized with gold nanoflowers (AuNFs). Furthermore, a screen printed electrode (SPE) modified with the introduced composite is electrochemically reduced to obtain an SPE/rGO-NHS-AuNFs electrode for sensitive and selective determination of chloramphenicol (CAP) antibiotic drug. The morphological structure of the as-prepared nanocomposite was characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, cyclic voltammetry, Fourier-transform infrared spectroscopy and electrochemical impedance spectroscopy. The proposed sensor demonstrated excellent performance with a linear concentration range of 0.05 to 100 mu M and a detection limit of 1 nM. The proposed electrode offers a high level of selectivity, stability, reproducibility and a satisfactory recovery rate for electrochemical detection of CAP in real samples such as blood serum, poultry feed, milk, eggs, honey and powdered milk samples. This further demonstrates the practical feasibility of the proposed sensor in food analysis.
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