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Quantum Size Effect in Bimetallic Nanoparticles Obtained via Thermolysis of Solid Solutions of Co(II), Ni(II), Zn(II) Salts of Maleic Acid

  • PHYSICAL CHEMISTRY OF NANOCLUSTERS AND NANOMATERIALS
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Abstract

Powder X-ray diffraction and the thermoanalytical characteristics of solid solutions with compositions [(CoxNi1 – x)(H2O)4(C4H3O4)2], [(CoxZn1 – x)(H2O)4(C4H3O4)2], [(NixZn1 – x)(H2O)4(C4H3O4)2] (0 < x < 1) are compared. The decomposition of solid solutions and their constituents when heated to 500°C in a flow of He is conventionally divided into three stages. Products of the thermolysis of solid solutions are found to be Co/Ni, Co/ZnO, and Ni/Zn bimetallic nanoparticles, respectively, embedded into the polymeric matrix of composites. It is shown that the thermal decomposition of solid solutions in the Curie curve upon a second order phase transition with the formation of the two-phase region found in Co/Ni bimetallic nanoparticles is a quantum size effect. The decomposition of [(Co0.1Zn0.9)(H2O)4(С4H3O4)2] solid solution removes the Co atoms (d = 2.5 Å) embedded in channels of the ZnO structure. These atoms also serve as catalysts for the growth of a nanobrush of carbon nanotubes (CNTs) on the composite’s surface at ≤500°C, another consequence of the quantum size effect. It is concluded that using a similar catalyst of CNT growth can appreciably lower the energy of the process.

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ACKNOWLEDGMENTS

The authors are grateful to N.F. Beizel, A.P. Zubareva, and O.S. Koshcheeva for performing elemental analysis.

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Authors and Affiliations

  1. Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

    L. I. Yudanova & V. A. Logvinenko

  2. Novosibirsk State University, 630090, Novosibirsk, Russia

    V. A. Logvinenko, A. V. Ishchenko & N. A. Rudina

  3. Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

    A. V. Ishchenko

Authors
  1. L. I. Yudanova
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  2. V. A. Logvinenko
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  3. A. V. Ishchenko
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  4. N. A. Rudina
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Correspondence to L. I. Yudanova.

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Translated by L. Chernikova

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Yudanova, L.I., Logvinenko, V.A., Ishchenko, A.V. et al. Quantum Size Effect in Bimetallic Nanoparticles Obtained via Thermolysis of Solid Solutions of Co(II), Ni(II), Zn(II) Salts of Maleic Acid. Russ. J. Phys. Chem. 94, 2108–2114 (2020). https://doi.org/10.1134/S0036024420100325

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  • DOI: https://doi.org/10.1134/S0036024420100325

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