J 2022

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

DUROVIC, Ana, Zorica STOJANOVIC, Zuzana BYTESNIKOVA, Snezana KRAVIC, Pavel SVEC et. al.

Basic information

Original name

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

Authors

DUROVIC, Ana, Zorica STOJANOVIC, Zuzana BYTESNIKOVA, Snezana KRAVIC, Pavel SVEC, Jan PŘIBYL (203 Czech Republic, guarantor, belonging to the institution) and Lukas RICHTERA

Edition

Journal of materials science, NEW YORK, Springer, 2022, 0022-2461

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10400 1.4 Chemical sciences

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 4.500

RIV identification code

RIV/00216224:14740/22:00127889

Organization unit

Central European Institute of Technology

UT WoS

000758999900002

Keywords in English

SOLID-PHASE EXTRACTIONWALL CARBON NANOTUBESODIUM-BOROHYDRIDEGRAPHITESAMPLESSPECTROSCOPYANTIBIOTICSREDUCTIONCOMPOSITEWATER

Tags

Tags

International impact, Reviewed
Změněno: 2/11/2024 15:14, Mgr. Adéla Pešková

Abstract

V originále

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.

Links

LM2018127, research and development project
Name: Česká infrastruktura pro integrativní strukturní biologii (Acronym: CIISB)
Investor: Ministry of Education, Youth and Sports of the CR
LQ1601, research and development project
Name: CEITEC 2020 (Acronym: CEITEC2020)
Investor: Ministry of Education, Youth and Sports of the CR