A novel kojic acid amperometric sensor based on hollow CuO/Fe2O3 hybrid microspheres immobilized in chitosan matrix

Autor:	Fu Chen, Zhaojing Yin, Zhousheng Yang
Rok vydání:	2011
Předmět:	Detection limit General Chemical Engineering Analytical chemistry Electrochemistry Amperometry Chitosan Matrix (chemical analysis) chemistry.chemical_compound chemistry Electrode Hydrothermal synthesis Kojic acid Nuclear chemistry
Zdroj:	Electrochimica Acta. 56:1089-1093
ISSN:	0013-4686
DOI:	10.1016/j.electacta.2010.10.082
Popis:	Hollow CuO/Fe 2 O 3 hybrid microspheres with small uniform holes were synthesized using a convenient hydrothermal method and were applied to fabricated an amperometric sensor for kojic acid. The resulting materials were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) and then were immobilized into the chitosan (Chi) matrix onto a glassy carbon electrode to obtain CuO/Fe 2 O 3 –Chi/GCE. The potential utility of the constructed electrodes were demonstrated by applying them to the analytical determination of kojic acid concentration. The electrochemical behavior of kojic acid on CuO/Fe 2 O 3 –Chi/GCE was explored. The modified electrode displayed excellent amperometric response for kojic acid with a linear range from 0.2 μM to 674 μM with a detection limit of 0.08 μM at a signal-to-noise ratio of 3. In order to validate feasibility, the CuO/Fe 2 O 3 –Chi/GCE has been used for quantitative detecting kojic acid in real samples.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e88b0998e0aa60036484cebff89bc383 https://doi.org/10.1016/j.electacta.2010.10.082 Zobrazit plný text záznamu Full Text from ScienceDirect