Synthesis of carnation-like Ho3+/Co3O4 nanoflowers as a modifier for electrochemical determination of chloramphenicol in eye drop

•CL-Ho3+/Co3O4-NFs were characterized by EDX, XRD and SEM.•CL-Ho3+/Co3O4-NFs was used for modified glassy carbon electrode.•This modified electrode was used for the determination of chloramphenicol. A simple solvo-thermal strategy and different analytical techniques were applied for synthesizing car...

Full description

Saved in:

Bibliographic Details
Published in:	Microchemical journal Vol. 159; p. 105535
Main Authors:	Talebizadehsardari, P., Aramesh-Boroujeni, Z., Foroughi, M.M., Eyvazian, A., Jahani, Sh, Faramarzpour, H.R., Borhani, F., Ghazanfarabadi, M., Shabani, M., Nazari, A.H.
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 01-12-2020
Subjects:	Carnation-like Ho3+/Co3O4 nanoflowers Chloramphenicol Impedance Modified electrode Voltammetry Chloramphenicol Voltammetry Impedance Modified electrode Carnation-like Ho3+/Co3O4 nanoflowers
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	•CL-Ho3+/Co3O4-NFs were characterized by EDX, XRD and SEM.•CL-Ho3+/Co3O4-NFs was used for modified glassy carbon electrode.•This modified electrode was used for the determination of chloramphenicol. A simple solvo-thermal strategy and different analytical techniques were applied for synthesizing carnation-like Ho3+/Co3O4 nanoflowers (CL-Ho3+/Co3O4-NFs). This research explained using a glassy carbon electrode (GCE) modified by Ho3+/Co3O4 nanoflowers to detect chloramphenicol. Such nanoflowers presented acceptable catalytic activities to determine chloramphenicol by cyclic voltammetry (CV) and different pulse voltammetry (DPV) techniques. Functions of the modified electrode has been dealt with through electrochemical impedance spectroscopy (EIS). Under optimal pH = 7.0, chloramphenicol reduction was observed at a potential approximately 267 mV less positive compared to the unmodified electrode. Considering DPV, chloramphenicol reduction showed a dynamic range of 0.01–800.0 µM and a limit of detection (3 s) of 7.1 nM. The research found an acceptable function of the modified electrode to detect chloramphenicol in real samples via the standard addition method.
ISSN:	0026-265X
DOI:	10.1016/j.microc.2020.105535