Hollow Nano Silica: Synthesis, Characterization and Applications

Ανάπτυξη Νανο-Σύνθετων Υλικών Με Βάση Το Ασβέστιο Για Την Ενίσχυση Των Πορωδών Υλικών Δόμησης Σε Αρχιτεκτονικά Μνημεία Και Παραδοσιακές Κατασκευές

“…During the top-down route, the core of the Ca(OH)2 nanoparticles was formed during the early stages of the slaking of lime [184] at a high supersaturation state, which favored the formation of defects [160] Dislocations can favor the dissolution of minerals and can act as preferred sites for the nucleation of new phases [160]. On the other hand, the observed absence of the Ca-alkoxides in the case of the Ca(OH)2 nanoparticles synthesized via the bottom-up synthetic route could be attributed to the absence of dislocations.…”

“…In specific, amylamine was adsorbed on the silica nanoparticle surface through electrostatic binding, resulting in the hydrophilization of the silica nanoparticle and to consequent stabilization of the foam [183]. The addition of both n-octylamine and amylamine has been successfully applied on the synthesis of lamellar-shape silver nanoparticles via the surfactant-template sol-gel method [184]. Finally, the addition of amylamine on the sol-gel synthesis of nanosilica particles of uniform size [185] 3.5 State of the art in the synthesis of calcium hydroxide particles…”