Issue 38, 2018

Dual electric and magnetic responsivity of multilayered magnetite-embedded core/shell silica/titania nanoparticles with outermost silica shell

Abstract

Multilayered magnetite-embedded core/shell silica/titania (SiO2/TiO2) nanoparticles with an outermost silica shell (SiO2/TiO2@Fe3O4/SiO2) were synthesized and used to develop stimuli-responsive smart fluids. Benefiting from the incorporation of the various materials, these smart fluids demonstrated electrorheological (ER) and magnetorheological (MR) activities under applied external electric (E) and magnetic (H) fields, respectively, and electromagnetorheological (EMR) characteristics with the simultaneous application of E and H fields. The inner SiO2/TiO2 core nanoparticles, embedded Fe3O4 nanoparticles and the outer SiO2 shell served as electroresponsive, magnetoresponsive and preventative materials toward corrosion, sedimentation and aggregation. The EMR performance of these fluids depended on the direction of the applied E and H fields. Notably, a 6.6-fold enhancement in EMR activity was observed with parallel application of E and H fields compared to perpendicular direction. This study demonstrates an effective approach to precisely and spatially control the rheological/mechanical properties of dual-responsive smart fluids via both field-induced and directional control of external fields.

Graphical abstract: Dual electric and magnetic responsivity of multilayered magnetite-embedded core/shell silica/titania nanoparticles with outermost silica shell

Supplementary files

Article information

Article type
Paper
Submitted
25 liep. 2018
Accepted
24 rugp. 2018
First published
29 rugp. 2018

J. Mater. Chem. C, 2018,6, 10241-10249

Dual electric and magnetic responsivity of multilayered magnetite-embedded core/shell silica/titania nanoparticles with outermost silica shell

C. Yoon, Y. Jang, S. Lee and J. Jang, J. Mater. Chem. C, 2018, 6, 10241 DOI: 10.1039/C8TC03677B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements