Affiliation:
1. Jiangsu Key Laboratory of Function Control Technology for Advanced Materials, School of Environmental and Chemical Engineering, Jiangsu Ocean University, Lianyungang 222005, Jiangsu Province, P. R. China
Abstract
Ferro-alloys have been extensively studied in the field of electrochemical sensing due to their abundant earth reserves and excellent performances. In this work, serials of bimetallic Fe/Co nanoalloy@carbon composites (Fe/Co@C) were successfully prepared using Co-doped MIL-101(Fe) as templates and developed as excellent electrochemical sensors for acetaminophen (AP) detection. It was found that the atomic ratio of Fe/Co in the templates can significantly affect the electrochemical activity of the product. Among the prepared composites, Fe/Co@C-G2 (Fe/Co = 2:1) with high conductivity and large specific surface area presents the best electrochemical sensing performance. Under the optimal conditions, Fe/Co@C-G2 has a high sensitivity of 55.2 [Formula: see text]A [Formula: see text][Formula: see text] [Formula: see text], a wide linear range of 0.29-407.15 [Formula: see text]M, a low LOD of 0.09 [Formula: see text]M, good selectivity, excellent stability, and good repeatability. In addition, Fe/Co@C-G2 can also be used for real sample testing. This work expands the application of Fe/Co@C-based composites in electrochemical sensing.
Funder
Qinglan Project of Jiangsu Province of China
Priority Academic Program Development of Jiangsu Higher Education Institutions
Publisher
World Scientific Pub Co Pte Ltd