Abstract
A study of the optical properties of iron nanoparticles prepared using the molecular-by-molecular method in the reactions of ion chemical and radiation-chemical reduction in inverse micelles, which were considered as microreactors, made it possible to reveal the features of the formation of metal nanoparticles (NPs) at various stages of physicochemical processes including a spontaneous formation of ordered spatial nanostructures in the postradiation period. The analysis of the spectral data obtained from the measurements in inverse micellar solutions (IMS), which were free of metal ions, provided important information on the evolution of colloid systems. After adding iron ions into an IMS, the Fe NP formation induced by self-assembly processes was detected via characteristic optical absorbance spectra. Based on the results obtained, some peculiarities of the self-assembly processes in IMSs occurring upon various ignition reactions of iron ion reduction and the Fe NP formation were discussed in the work.
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Notes
The idea of polarization of water in reverse micelles has been examined and discussed for a long time. See, for example, [20] – Editor.
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ACKNOWLEDGMENTS
We are grateful to S.S. Abramchuk, associate professor of the Chair of Polymer and Crystal Physics of Department of Physics of Moscow State University, for assisting with TEM investigations.
The investigations were carried out with the use of a ULV-10-10-C-70 accelerator of the Center for Collective Use of Physical Methods of the Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Science.
Funding
The work was supported partially by the Russian Foundation for Basic Research, project no. 16-03-00665.
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Revina, A.A., Suvorova, O.V., Pavlov, Y.S. et al. The Role of Self-Assembly Processes in the Formation of Iron Nanoparticles in Inverse Micelles. Prot Met Phys Chem Surf 55, 888–894 (2019). https://doi.org/10.1134/S2070205119040166
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DOI: https://doi.org/10.1134/S2070205119040166