Colloids and Surfaces A 538 (2018) 600–609 Contents lists available at ScienceDirect Colloids and Surfaces A journal homepage: www.elsevier.com/locate/colsurfa Fabrication of carbon-based nanomaterial composite electrochemical sensor for the monitoring of terbutaline in pharmaceutical formulations P. Gopal, T. Madhusudana Reddy Electrochemical Research Laboratory, Department of Chemistry, S.V.U. College of Sciences, Sri Venkateswara University, Tirupati-517502, Andhra Pradesh, India GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: The present investigation is focused on the development of a chemical sensor made by the modiﬁcation of glassy Terbutaline carbon electrode (GCE) with graphene followed by multi walled carbon nanotubes (MWCNTs) towards the Graphene quantitative monitoring of Terbutaline (TB). The developed sensor was characterized with cyclic voltammetry, Multi walled carbon nano tubes scanning electron microscopy (SEM) and electrochemical impedance spectroscopy (EIS) studies. The detailed Heterogeneous rate constant electrochemical redox behavior of TB was examined and possible redox mechanism was proposed. We have Electrochemical impedance spectroscopy and studied the eﬀect of pH of phosphate buﬀer solution (PBS) on the redox behavior of TB and the results suggest order of reaction that the pH-4.5 was an optimum pH. From the eﬀect of scan rate results, it was concluded that the redox process was controlled by diﬀusion
Geoderma – Elsevier
Published: Feb 15, 2019
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