Cyclic voltammetry and electrical impedance spectroscopy of electrodes modified with PEDOT:PSS-reduced graphene oxide composite

Ramli, Nurul Izzati and Ismail, Nur Alya Batrisya and Abd. Wahab, Mohd. Firdaus and Wan Salim, Wan Wardatul Amani (2018) Cyclic voltammetry and electrical impedance spectroscopy of electrodes modified with PEDOT:PSS-reduced graphene oxide composite. In: Transparent conducting films. Intech Open, London, United Kingdom, pp. 1-10. (In Press)

PDF - Submitted Version Restricted to Registered users only Download (2MB) | Request a copy

Abstract

Cyclic voltammetry (CV) and electrical impedance spectroscopy (EIS) are electrochemical techniques to characterize reversibility of electron transfer and impedance at the electrode-solution interface, respectively. Reduced graphene oxide (rGO) and conductive polymer PEDOT:PSS are often used to enhance electron transfer at electrode surface. This chapter provides a step-by-step methodology of CV and EIS conducted on screen-printed carbon electrode (SPCE) modified with rGO-PEDOT:PSS and brief discussion on the CV and EIS results. The CV of rGO-PEDOT:PSS shows a reversible electron transfer in comparison to SPCE modified with PEDOT:PSS. For EIS, rGO-PEDOT:PSS was found to reduce the Warburg impedance, suggesting enhanced electrode conductivity. These results suggest that rGO-PEDOT:PSS is a suitable material for biosensing purpose.

Item Type:	Book Chapter
Additional Information:	5236/68445
Uncontrolled Keywords:	PEDOT:PSS graphene, cyclic voltammetry, electrical impedance spectroscopy, biosensor
Subjects:	Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) > TA164 Bioengineering T Technology > TP Chemical technology > TP155 Chemical engineering T Technology > TP Chemical technology > TP248.13 Biotechnology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User:	Dr Wan Wardatul Amani Wan Salim
Date Deposited:	26 Dec 2018 08:58
Last Modified:	26 Dec 2018 08:58
URI:	http://irep.iium.edu.my/id/eprint/68445

Actions (login required)

View Item