Next Article in Journal
Crystal Indentation Hardness
Next Article in Special Issue
Colloidal Nanocrystalline Semiconductor Materials as Photocatalysts for Environmental Protection of Architectural Stone
Previous Article in Journal
Synthesis, Crystal Structure, DFT Study of m-Methoxy-N′-(3-Methoxybenzoyl)-N-Phenylbenzohydrazide
Previous Article in Special Issue
Structural and Quantitative Investigation of Perovskite Pore Filling in Mesoporous Metal Oxides
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Crystals 2017, 7(1), 22;

Synthesizing Iron Oxide Nanostructures: The Polyethylenenemine (PEI) Role

Biological and Environmental Sciences and Engineering (BESE) Division, Nanostructures & Biotech Laboratory (NABLA Lab), King Abdullah University of Science and Technology (KAUST), 23955-6900 Thuwal, Saudi Arabia
These authors contributed equally to this work.
Authors to whom correspondence should be addressed.
Academic Editor: Roberto Comparelli
Received: 23 November 2016 / Revised: 6 January 2017 / Accepted: 9 January 2017 / Published: 12 January 2017
(This article belongs to the Special Issue Colloidal Nanocrystals: Synthesis, Characterization and Application)
Full-Text   |   PDF [6537 KB, uploaded 12 January 2017]   |  


Controlled synthesis of anisotropic iron oxide nanoparticles is a challenge in the field of nanomaterial research that requires an extreme attention to detail. In particular, following up a previous work showcasing the synthesis of magnetite nanorods (NRs) using a two-step approach that made use of polyethylenenemine (PEI) as a capping ligand to synthesize intermediate β-FeOOH NRs, we studied the effect and influence of the capping ligand on the formation of β-FeOOH NRs. By comparing the results reported in the literature with those we obtained from syntheses performed (1) in the absence of PEI or (2) by using PEIs with different molecular weight, we showed how the choice of different PEIs determines the aspect ratio and the structural stability of the β-FeOOH NRs and how this affects the final products. For this purpose, a combination of XRD, HRTEM, and direct current superconducting quantum interference device (DC SQUID) magnetometry was used to identify the phases formed in the final products and study their morphostructural features and related magnetic behavior. View Full-Text
Keywords: magnetic nanoparticles; akaganeite; magnetite; hematite; polyethylenenemine; superparamagnetic behavior magnetic nanoparticles; akaganeite; magnetite; hematite; polyethylenenemine; superparamagnetic behavior

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Lentijo Mozo, S.; Zuddas, E.; Casu, A.; Falqui, A. Synthesizing Iron Oxide Nanostructures: The Polyethylenenemine (PEI) Role. Crystals 2017, 7, 22.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Crystals EISSN 2073-4352 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top