Show simple item record

AuthorAl Jahoushi, Khaula A.
AuthorAyesh, Ahmad I.
AuthorEl-Maghraby, Hesham F.
AuthorAlnoush, Wajdi
AuthorHiggins, Drew
AuthorHassan, Fathy M.
AuthorGreish, Yaser E.
Available date2022-04-26T06:59:31Z
Publication Date2022
Publication NameAdvanced Materials Interfaces
Identifierhttp://dx.doi.org/10.1002/admi.202102120
CitationJahoushi, K. A. A., Ayesh, A. I., El-Maghraby, H. F., Alnoush, W., Higgins, D., Hassan, F. M., Greish, Y. E., Tunable Hydroxyapatite/Magnetite Nanohybrids with Preserved Magnetic Properties. Adv. Mater. Interfaces 2022, 2102120. https://doi.org/10.1002/admi.202102120
ISSN2196-7350
URIhttp://hdl.handle.net/10576/30431
AbstractMagnetic nanoparticles (MNPs) have been extensively investigated in a wide range of biomedical applications. Controlled coating of the MNPs is commonly utilized to protect and maintain their magnetic properties and to improve their biocompatibility, hydrophilicity, colloidal stability and overall biodistribution. Hydroxyapatite (HAp), a highly biocompatible material, is considered for the functionalization of MNPs. In this study, two simple chemical approaches are used to prepare nanohybrid MNPs-on-HAp and HAp-on-MNPs composites. The effect of heat treatment on the phase com-position, morphology, and magnetic properties of both types of magnetic composites is extensively evaluated. In the presence of HAp, MNPs are segregated onto their surfaces and their transformation to hematite upon heat treatment is delayed. On the other hand, needle-shaped HAp nano-crystallites preferentially grow onto the hydroxylated MNPs surfaces, leading to a synergistic enhancement in the magnetic properties of the produced nanocomposites, with preserved magnetic properties. Compared with a saturation magnetization (Ms) value of 80 emu g−1 of pure MNPs, a MNPs-on HAp nanohybrid shows a maximum of 14 emu g−1, while nanohybrids based on HAp-on-MNPs show Ms values in the range of 43–78 emu g−1. These findings demonstrate the ability to fine-tune the magnetic properties of the HAp/MNPs nano hybrids via optimizing their processing conditions.
SponsorThis work was financially supported by United Arab Emirates University (Grant Code: UPAR-G00002150 and fund code 31S246) and by the Faculty of Engineering at McMaster University. Electron microscopy and related characterization were performed at the Canadian Centre for Electron Microscopy at McMaster University. Zeta potential measurements were also carried out by Matthew Campea (Dr. Todd Hoare's laboratory), McMaster University.
Languageen
PublisherWiley
Subjecthematite
hydroxyapatite
magnetic properties
magnetite nanoparticles
microstructures
TitleTunable Hydroxyapatite/Magnetite Nanohybrids with Preserved Magnetic Properties
TypeArticle
dc.accessType Full Text


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record