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Article

Synthesis, Structure, and Electrophysical and Electrochemical Properties of Novel Composite La0.9MnO3-LaFeO3

by
Mukhametkali Mataev
1,
Zamira Sarsenbaeva
1,*,
Bahadir Keskin
2,
Marzhan Nurbekova
1,*,
Amangeldi Meldeshov
1,
Zhanar Tursyn
1 and
Karima Seitbekova
1
1
Department of Chemistry, Faculty of Natural Sciences, Kazakh National Women’s Teacher Training University, Gogol 114/1, Almaty 050000, Kazakhstan
2
Department of Chemistry, Faculty of Arts & Science, Yildiz Technical University, Istanbul TR34220, Turkey
*
Authors to whom correspondence should be addressed.
Molecules 2025, 30(1), 132; https://doi.org/10.3390/molecules30010132
Submission received: 18 November 2024 / Revised: 25 December 2024 / Accepted: 26 December 2024 / Published: 31 December 2024
(This article belongs to the Topic Advanced Nanomaterials and Technologies for Sustainable Development)
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Abstract

This article presents the synthesis, electrophysical, and catalytic properties of a La0.9MnO3–LaFeO3 nanocomposite material. The nanocomposite was synthesized via the sol–gel (Pechini) method. X-ray diffraction (XRD) analysis revealed a polycrystalline, biphasic perovskite structure combining both hexagonal and cubic symmetry. The microstructure and elemental composition, examined using field emission scanning electron microscopy (FESEM), indicated an average particle size of approximately 186.9 nm. The composite exhibits semiconducting behavior within the temperature ranges of 293–323 K and 343–393 K. Developing electrocatalysts free of precious metals for the hydrogen evolution reaction (HER) is increasingly important to facilitate the production of hydrogen from renewable sources. In this study, the conductive La0.9MnO3–LaFeO3 composite was deposited on graphite and, for the first time, evaluated as an electrocatalyst for HER in acidic media. The resulting composite films were tested using linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) in a glassy carbon electrode (GCE) setup, providing insights into their potential as effective, cost-efficient electrocatalysts.
Keywords: double perovskite; synthesis; Pechini method; electroconductivity; HER double perovskite; synthesis; Pechini method; electroconductivity; HER

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MDPI and ACS Style

Mataev, M.; Sarsenbaeva, Z.; Keskin, B.; Nurbekova, M.; Meldeshov, A.; Tursyn, Z.; Seitbekova, K. Synthesis, Structure, and Electrophysical and Electrochemical Properties of Novel Composite La0.9MnO3-LaFeO3. Molecules 2025, 30, 132. https://doi.org/10.3390/molecules30010132

AMA Style

Mataev M, Sarsenbaeva Z, Keskin B, Nurbekova M, Meldeshov A, Tursyn Z, Seitbekova K. Synthesis, Structure, and Electrophysical and Electrochemical Properties of Novel Composite La0.9MnO3-LaFeO3. Molecules. 2025; 30(1):132. https://doi.org/10.3390/molecules30010132

Chicago/Turabian Style

Mataev, Mukhametkali, Zamira Sarsenbaeva, Bahadir Keskin, Marzhan Nurbekova, Amangeldi Meldeshov, Zhanar Tursyn, and Karima Seitbekova. 2025. "Synthesis, Structure, and Electrophysical and Electrochemical Properties of Novel Composite La0.9MnO3-LaFeO3" Molecules 30, no. 1: 132. https://doi.org/10.3390/molecules30010132

APA Style

Mataev, M., Sarsenbaeva, Z., Keskin, B., Nurbekova, M., Meldeshov, A., Tursyn, Z., & Seitbekova, K. (2025). Synthesis, Structure, and Electrophysical and Electrochemical Properties of Novel Composite La0.9MnO3-LaFeO3. Molecules, 30(1), 132. https://doi.org/10.3390/molecules30010132

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