A high pressure pathway toward boron-based nanostructured solids
Year: 2018
Type: article
Abstract: 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 a pressure 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 through (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.
Source: Dalton Transactions
DOI: 10.1039/c8dt00932e
Institutions: Centre National de la Recherche Scientifique, Collège de France, Sorbonne Université, Chimie de la Matière Condensée de Paris, Muséum national d'Histoire naturelle, Institute of Mineralogy, Institut de Recherche pour le Développement, Structure et Instabilité des Génomes, Laboratoire de Réactivité de Surface, Institut de Physique et Chimie des Matériaux de Strasbourg
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2801426524