Ruthenium containing perovskites as electrode materials for 4-nitrophenol detection

被引：4
作者：
Mojovic, Zorica [1 ]
Petrovic, Srdjan [1 ]
Mojovic, Milos [2 ]
Pavlovic, Stefan [1 ]
Rozic, Ljiljana [1 ]
机构：
[1] Univ Belgrade, IChTM Dept Catalysis & Chem Engn, Njegoseva 12, Belgrade, Serbia
[2] Univ Belgrade, Fac Phys Chem, Studentski Trg 12-16, Belgrade 11000, Serbia
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2021年 / 148卷
关键词：
Perovskite; Ruthenium; Modified electrode; 4-Nitrophenol; LA0.75SR0.25CR0.9M0.1O3; PEROVSKITES; ELECTRICAL-CONDUCTIVITY; NITROPHENOL ISOMERS; LACRO3; NANOPARTICLES; CATALYSTS; SENSOR; OXIDATION; OXIDES; PERFORMANCE;
D O I：
10.1016/j.jpcs.2020.109649
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this paper, the relationship of structure, type of oxygen defects, valence states of Cr and Ru, and electrochemical 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.
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页数：10
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