23 0

In situ synthesis of Fe3O4@SiO2 core-shell nanoparticles via surface treatment

Title
In situ synthesis of Fe3O4@SiO2 core-shell nanoparticles via surface treatment
Author
최성철
Keywords
Magnetite; Surface treatment; Core-shell; Dispersion; Zeta potential; In situ process
Issue Date
2018-08
Publisher
ELSEVIER SCI LTD
Citation
CERAMICS INTERNATIONAL, v. 44, no. 11, page. 12233-12237
Abstract
Core-shell structured Fe3O4@SiO2 nanoparticles were synthesized through a facile in situ surface-treatment process. Surface treatments of the as-prepared Fe3O4 nanoparticles with acid or base caused changes in the shape of spherical particles agglomerated into clusters. The morphological changes of the particles experienced an abrupt change depending on the concentration of the treated acid or base, and the magnetization properties and surface characteristics corresponding to these behaviors were studied. As a result, optimum surface-treatment conditions for depositing SiO2 on the surface were established, and the derivation condition basically included the ideal environment for coating SiO2. It was possible to coat SiO2 using a sol-gel reaction without going through the removal of residual organics and a solvent displacement process. About 8 nm of a single coating layer was homogeneously formed due to excellent initial dispersibility of Fe3O4 nanoparticles according to the modified surface characteristics.
URI
https://www.sciencedirect.com/science/article/pii/S0272884218308666?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/119769
ISSN
0272-8842; 1873-3956
DOI
10.1016/j.ceramint.2018.04.005
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE