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Ruthenium containing perovskites as electrode materials for 4-nitrophenol detection

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2021
Authors
Mojović, Zorica
Petrović, Srđan
Mojović, Miloš
Pavlović, Stefan
Rožić, Ljiljana
Article (Published version)
,
Elsevier
Metadata
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Abstract
In this paper, the relationship of structure, type of oxygen defects, valence states of Cr and Ru, and electro- chemical properties of La0.7Sr0.3Cr1-XRuXO3 (0 < x < 0.1) perovskite-type oxides were studied. The samples were synthesized by a conventional solid-state reaction method and characterized by powder X-ray diffraction, X-ray fluorescence spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, and electron paramagnetic resonance spectroscopy. The electrochemical performance of these samples was evaluated towards the detection of 4-nitrophenol and strongly depends on the concentration of ruthenium incorporated in the crystal lattice. A new La0.7Sr0.3Cr0.925Ru0.075O3 electrocatalyst with a wide linear concentration range (25–5000 mM) and a detection limit of 8 mM was obtained. These results provide an opportunity for its application in the analysis of real water samples.
Keywords:
Perovskite / Ruthenium / Modified electrode / 4-Nitrophenol
Source:
Journal of Physics and Chemistry of Solids, 2021, 148, 109649-
Publisher:
  • Elsevier
Projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-200026)

DOI: 10.1016/j.jpcs.2020.109649

ISSN: 0022-3697

WoS: 000586405300040

Scopus: 2-s2.0-85089660184
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URI
https://cer.ihtm.bg.ac.rs/handle/123456789/3702
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