ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Rational construction of dairy flower-like zinc oxide-doped yttrium molybdate for the electrochemical detection of uric acid

Mariyammal Narayanan, Leema Rose, Sivanesan Subramanian, and Panneerselvam Perumal

Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, India

E-mail: panneerp1@srmist.edu.in

Received: 25 April 2023  Accepted: 31 October 2023

Abstract:

The rapid development of electrochemical sensors holds great promise to serve as a next generation. However, the practical performances of electrochemical sensors are cruelly limited by stability, selectivity and sensitivity. These issues have been well addressed by introducing rational designs into the modified electrode for achieving the required performances. Herein, we demonstrate the ZnO–YMoO₄ for highly selective electrochemical detection of uric acid (UA). The ZnO–YMoO₄ nanostructure was characterised using X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, field emission scanning electron microscope, transmission electron microscope with elemental mapping and energy-dispersive spectrometer. The ZnO–YMoO₄ modified electrode shows a much-improved electrochemical performance compared to those of the other electrodes. Interestingly, the ZnO is strongly firmed in the YMoO₄, which provides a more sufficient pathway for the rapid electron and ion transportation. On the basis of these findings, our proposed sensor achieves a wide detection range from 0.1 to 120 nM with a correlation coefficient of 0.9839 and a low detection limit of 14.8 nM. Most markedly, the real-time monitoring of the proposed electrochemical sensor was proved by the successful determination of UA in milk samples. Our research work has opened a novel way to the rationale for the construction of highly efficient practical electrochemical sensors.

Graphical abstract

Keywords: Sensor; Conductivity; Stability; Selectivity; Nanostructure

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-023-03189-1

Chemical Papers 78 (3) 1613–1624 (2024)