Open Access

Peer-reviewed

Research Article

Main Article Content

M. Mahmud Alamcorresponding author
https://orcid.org/0000-0002-2636-5038
M. T. Uddin
Mohammed M. Rahman
Abdullah M. Asiri
M. A. Islam

Abstract

The 4-NPHyd (4-nitrophenylhydrazine) electrochemical sensor assembled using wet-chemically prepared ZnO/SnO2 nanoparticle (NPs) decorated a glassy carbon electrode (GCE) with conductive Nafion binder. The synthesized NPs characterized by XPS, ESEM, EDS, and XRD analysis. The calibration of the proposed sensor obtained from current versus concentration of 4-NPHyd found linear over a concentration (0.1 nM ~ 0.01 mM) of 4-NPHyd, which denoted as the dynamic range (LDR) for detection of 4-NPHyd. The 4-NPHyd sensor sensitivity calculated using the LDR slope considering the active surface of GCE (0.0316 cm2), which is equal to be 7.6930 µAµM/cm2, an appreciable value.  The detection limit (LOD) at signal/noise (S/N = 3) estimated, and outstanding lower value at 94.63±4.73 pM perceived. The analytical parameters such as reproducibility, long-term performing ability and response time are found as appreciable. Finally, the projected sensor shows exceptional performances in the detection of 4-NPHyd in environmental samples.

Keywords
ZnO/SnO2 nanoparticles, glassy carbon electrode, 4-Nitrophenylhydrazine sensor, sensitivity, environmental protection

Article Details

How to Cite
Alam, M., Uddin, M., Rahman, M., Asiri, A., & Islam, M. (2021). A reliable electrochemical sensor developed based on ZnO/SnO₂ nanoparticles modified glassy carbon electrode. Advances in Biochips, 2(1), 24-34. https://doi.org/10.25082/AB.2021.01.002

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