Transmission Electron Microscopy: Study of the Bimetallic Nanoparticle Features

• Published in: Russian journal of physical chemistry. B Vol. 16; no. 4; pp. 780 - 786
• Main Authors: Zakharov, N. S., Popova, A. N., Zakharov, Yu. A., Pugachev, V. M., Russakov, D. M.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.08.2022; Springer Nature B.V
• Subjects: Bimetals; Chemical Physics of Nanomaterials; Chemistry; Chemistry and Materials Science; Crystal structure; Crystallites; High resolution electron microscopy; Iron; Liquid phases; Nanoparticles; Phase composition; Physical Chemistry; Redox reactions; Transmission electron microscopy; Ultrafines; X-ray diffraction; transmission electron microscopy (TEM); nanoparticles; Fe–Pt system; solid solution; X-ray phase analysis (XRD)
• ISSN: 1990-7931; 1990-7923
• DOI: 10.1134/S1990793122040170

In this paper a comprehensive approach to study the morphology of particles and their structural characteristics, as well as the phase composition of multicomponent nanosystems, which combines the method of electron microscopy and X-ray diffraction (XRD) analysis and makes it possible to compare information on the properties of individual nanosized crystals (NCs) with the results of studying their large array is considered using the example of an Fe–Pt system structured at the nanoscale level. The study of the features of the phase compositions and phase compositions, as well as the sizes of crystals of the Fe–Pt system structured at the nanolevel obtained in liquid-phase redox reactions showed the comparability (convergence) of the data of microscopy and X-ray phase (XRD) analysis. High-resolution transmission electron microscopy revealed the presence of an ultrafine (crystallite size ~1.5 nm) diffraction-invisible iron-rich phase and signs of a block structure of the diffraction-fixed phase.