Publication detail

Reduced graphene oxide/ZnO nanocomposite modified electrode for the detection of tetracycline

DUROVIC, A. STOJANOVIC, Z. BYTEŠNÍKOVÁ, Z. KRAVIC, S. ŠVEC, P. PŘIBYL, J. RICHTERA, L.

Original Title

Reduced graphene oxide/ZnO nanocomposite modified electrode for the detection of tetracycline

Type

journal article in Web of Science

Language

English

Original Abstract

In this work, rGO-ZnO (reduced graphene oxide-zinc oxide) nanocomposite was prepared and used for modification of GC (glassy carbon) surface in order to obtain an electrochemical sensor for tetracycline determination in water and urine samples by voltammetric technique. The characterization of synthesized nanocomposite was accomplished by utilizing SEM, EDS, AFM and FTIR analyses. The electrochemical behaviour of tetracycline on the modified GCE was studied by cyclic voltammetry and results revealed that modification enhanced the electro-oxidation of tetracycline with increased current intensity. Tetracycline provided a well-defined oxidation peak at around + 1.05 V vs. Ag/AgCl (3.5 mol/L KCl) in Britton-Robinson buffer (BRB) at pH 8.0. Then, square-wave voltammetry (SWV) was applied for analytical purposes. The influence of the supporting electrolyte (type, concentration and pH) and SWV parameters on the peak current was investigated in order to optimize the experimental and instrumental conditions for quantitative analysis. Under the optimal conditions, the prepared sensor exhibits a wide linear range (4-400 mu mol/L) with a low limit of detection (0.38 mu mol/L) and good reproducibility of analysis (RSD < 3.40%). In addition, the sensor showed high selectivity towards tetracycline analysis in comparison to interferences often present in real samples. The practical analytical usefulness of the presented sensing platform was successfully demonstrated in the determination of tetracycline in water and human urine with good recoveries.

Keywords

solid-phase extraction; wall carbon nanotube; sodium-borohydride; graphite; samples; spectroscopy; antibiotics; reduction; composite; water

Authors

DUROVIC, A.; STOJANOVIC, Z.; BYTEŠNÍKOVÁ, Z.; KRAVIC, S.; ŠVEC, P.; PŘIBYL, J.; RICHTERA, L.

Released

31. 3. 2022

ISBN

0022-2461

Periodical

Journal of Materials Science

Year of study

57

Number

9

State

United States of America

Pages from

5533

Pages to

5551

Pages count

19

URL

https://doi.org/10.1007/s10853-022-06926-1

BibTex

@article{BUT178371,
  author="Ana {Durovic} and Zorica {Stojanovic} and Zuzana {Bytešníková} and Snezana {Kravic} and Pavel {Švec} and Jan {Přibyl} and Lukáš {Richtera}",
  title="Reduced graphene oxide/ZnO nanocomposite modified electrode for the detection of tetracycline",
  journal="Journal of Materials Science",
  year="2022",
  volume="57",
  number="9",
  pages="5533--5551",
  doi="10.1007/s10853-022-06926-1",
  issn="0022-2461",
  url="https://doi.org/10.1007/s10853-022-06926-1"
}