Facile synthesis of scandium fluoride oriented single-crystalline rods and urchin-like structures by a gas–solution interface technique

Abstract

A facile and effective method to obtain urchin-like structures and ordered arrays of rod-like crystals of scandium fluoride by an interfacial interaction between solution and gaseous reagents (Gas-Solution Interface Technique, GSIT) is reported. The rod crystals with tetragonal crystal lattice can be as thin as ca. 200 nm and as long as ca. 7 μm. The effect of solution concentration and reaction time on the morphology of the product is reported. The synthesized crystals were characterized by SEM, TEM, HRTEM, XRD analyses, EDS, XPS, and FT-IR spectroscopy. A hypothesis is proposed on the formation of rod crystals during the GSIT process.

Thermodynamics and kinetics of non-autonomous phase formation in nanostructured materials with variable functional properties

“…In view of the above findings, it can be concluded that an important line of research is the study of phase formation mechanisms in the systems with nanoscale reagents, inter alia, with nanoscale spatial limitations, i.e. of the processes in nanoreactors [17,[192][193][194][195]. Not only the "soft chemistry" methods [5,13,37,41,59,97,196,197], but also the methods based on precursor combustion [11,61,95,99,190,[198][199][200], in particular, the solvent combustion method [11,16,21,22,62,95,99,190,[198][199][200] are effective for producing materials with a high proportion of nonautonomous phases.…”

Flintstone as a nanocomposite material for photonics

“…In view of the above findings, it can be concluded that an important line of research is the study of phase formation mechanisms in the systems with nanoscale reagents, inter alia, with nanoscale spatial limitations, i.e. of the processes in nanoreactors [17,[192][193][194][195]. Not only the "soft chemistry" methods [5,13,37,41,59,97,196,197], but also the methods based on precursor combustion [11,61,95,99,190,[198][199][200], in particular, the solvent combustion method [11,16,21,22,62,95,99,190,[198][199][200] are effective for producing materials with a high proportion of nonautonomous phases.…”

Design of Pb1−xSrxF2 hollow crystals with gas–solution interfacial reactions

“…Using the Gas-Solution Interface Technique (GSIT), 2D crystals of Ag, 13 oxides, 14,15 and fluorides 16,17 of various transition metals were obtained. The ability of this method to accurately control the crystal morphology and packing density enables producing oriented crystal arrays, 18 hollow crystals, 19 and gradient films able to roll up into microscrolls when dried. 20 The GSIT synthesis of inorganic materials is carried out under "soft" chemistry conditions on a naturally flat liquid-gas interface, it requires no templates, organic additives, nor physical impacts such as microwave, ultrasonic or high temperature processing.…”