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High pressures pathway toward boron-based nanostructured solids


Inorganic nanocomposites made of an inorganic matrix containing nanoparticle inclusions provide materials of advanced mechanical, magnetic, electrical properties and multifunctionality. The range of compounds that can be implemented in nanocomposites is still narrow and new preparation methods are required to design such advanced materials. Herein we describe how the combination of nanocrystal synthesis in molten salts, with subsequent heat treatment at pressures in the GPa range, gives access to a new family of boron-based nanocomposites. With the case studies of HfB2/β-HfB2O5 and CaB6/CaB2O4 (IV), we demonstrate by X-Ray Diffraction and thorough (Scanning) Transmission Electron Microscopy the crystallization of borate matrices into rare compounds and unique nanostructured solids, while metal boride nanocrystals remain dispersed in the matrix and maintain small sizes below 30 nm, thus demonstrating a new multidisciplinary approach toward nanoscaled heterostructures.

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Publication details

The article was accepted on 09 May 2018 and first published on 09 May 2018

Article type: Communication
DOI: 10.1039/C8DT00932E
Citation: Dalton Trans., 2018, Accepted Manuscript
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    High pressures pathway toward boron-based nanostructured solids

    R. Grosjean, Y. Le Godec, S. Delacroix, G. Gouget, P. Beaunier, O. Ersen, D. Ihiawakrim, O. Kurakevych, C. Chaneac and D. Portehault, Dalton Trans., 2018, Accepted Manuscript , DOI: 10.1039/C8DT00932E

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