P2EC.4 - Development of electrochemical sensor based on graphene nanocomposite for determination of β-agonists
- Event
- 17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
Vienna, Austria - Chapter
- P-2 - Electrochemical Sensors
- Author(s)
- Y. Poo-arporn - Synchrotron Light Research Institute, Avenue, Nakhon Ratchasima (Thailand), S. Pakapongpan - Thailand Organic and Printed Electronics Innovation Center, National Electronics and Computer Technology Center, NSTDA, Pathum Thani (Thailand), R. Poo-arporn - Biological Engineering Program, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok (Thailand)
- Pages
- 709 - 710
- DOI
- 10.5162/IMCS2018/P2EC.4
- ISBN
- 978-3-9816876-9-9
- Price
- free
Abstract
This study reports the development of a reduced graphene oxide/iron oxide nanocomposite modified screen-printed electrode (rGO-Fe3O4/MSPE) as a novel system for the preparation of electrochemical sensing for β-agonists determination. To fabricate the sensor, Fe3O4 was attached on the rGO surface by covalent linking to obtain rGO-Fe3O4 nanocomposite. The nanocomposite was dropped on the surface of SPE to obtain nanocomposite film forming on the electrode. Adsorption of Fe3O4 on rGO and structural property were characterized by x-ray absorption near-edge structure (XANES) technique. The electrocatalytic response to β-agonists and the performance of the sensor were investigated by means of differential pulse voltammetry (DPV). The proposed sensor exhibited great electrocatalytic activity and fast response to β-agonists. The linear relation in the range from 1 μM to 20 μM with a detection limit of 75 nM based on S/N = 3. The sensor exhibited a sensitivity of 116.4 μA/mM