Effect of Scan Rate and pH on Determination Amoxilline Using Screen Printed Carbon Electrode Modified With Functionalized Graphene Oxide

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Issam A. Latif Sundus H. Merza

Abstract

  Graphene oxide GO was functionalized with 4-amino, 3-substituted 1H, 1, 2, 4 Triazole 5(4H) thion (ASTT) to obtain GOT. GOT characterized by FT-IR, XRD.via modification of the working electrode of the SPCE with the prepared nanomaterial ( GOT) the effect of scan rate and pH on the determination of Amoxilline (AMOX) was studied using cyclic voltammetry. AMOX show various responses at pH ranging from 2 to 7 and also was observed sharp increase in the oxidation peaks in the pH 3. The formal potential (midpoint) for AMOX was highly pH-dependent. From the effect of scan rate, surface coverage concentration  of electroactive species the values of the electron transfer coefficient and the electron transfer constant rate ket was obtained as   5.39×10-10 molcm-2, 0.5, and 2.45×10-3 cm.s-1respectively.

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How to Cite
LATIF, Issam A.; MERZA, Sundus H.. Effect of Scan Rate and pH on Determination Amoxilline Using Screen Printed Carbon Electrode Modified With Functionalized Graphene Oxide. Ibn AL- Haitham Journal For Pure and Applied Science, [S.l.], v. 31, n. 1, p. 157-171, may 2018. ISSN 2521-3407. Available at: <http://jihcoed.com/ihj/index.php/j/article/view/1863>. Date accessed: 14 dec. 2018. doi: http://dx.doi.org/10.30526/31.1.1863.
Section
Chemistry