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Synthesis of Fe3O4@ SiO2 Core-shell Magnetic Nanoparticles with Porous SiO2 Shell Extracted from Rice Husk Ash
, M.Sc. Thesis Sharif University of Technology ; Nemati, Ali (Supervisor)
Abstract
Magnetic nanoparticles, especially magnetic nanoparticles with silicate coatings, have attracted the attention of many researchers; Mainly because the silica shell can be functionalized with different molecules and functional groups and used in biological applications as targeted drug carriers. This study aimed to synthesize Fe3O4 core-shell nanoparticles with continuous and porous SiO2 shells on the surface of Fe3O4 particles. So that the coating is done evenly and with a strong connection. The procedure was as follows: core nanoparticle individual nanoparticles were made by the single-step method. To extract silica from rice husk, rice husk was subjected to heat treatment to obtain rice...
Polymer-derived boron doped akermanite-octacalcium phosphate glass-ceramic scaffolds stimulate angiogenesis
, Article Materials Chemistry and Physics ; Volume 313 , 2024 ; 02540584 (ISSN) ; Rezaei, M ; Behsam, S ; Aharipour, N ; Amukarimi, S ; Abdollahi, S ; Malek Khachatourian, A ; Sharif University of Technology
Elsevier
2024
Abstract
Angiogenesis is crucial in bone tissue engineering due to expediting the healing rate and remarkably enhancing the regeneration process. Further, vascular sprouting progression is controlled by cellular autocrine and paracrine secretion of growth factors. Boron ions significantly stimulate cells in terms of excessive angiogenic growth factors secretion, therefore, could lead to excessive angiogenesis, contingent upon receiving an appropriate dose of the ion. In the current work, akermanite-octacalcium phosphate glass-ceramics were elicited from polymeric precursors, the method of synthesis that is so-called polymer-derived ceramics (PDC), and boron-containing moieties were employed to dope...