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Thermal Route for the Synthesis of Maghemite/Hematite Core/Shell Nanowires

Publicated to:Journal of Physical Chemistry C. 121 (41): 23158-23165 - 2017-10-19 121(41), DOI: 10.1021/acs.jpcc.7b02625

Authors: Cortes-Llanos, Belen; Serrano, Aida; Munoz-Noval, Alvaro; Urones-Garrote, Esteban; del Campo, Adolfo; Marco, Jose F; Ayuso-Sacido, Angel; Perez, Lucas

Affiliations

CSIC - Instituto de Ceramica y Vidrio (ICV) - Author
CSIC - Instituto de Quimica Fisica Rocasolano (IQFR) - Author
CSIC, Inst Quim Fis Rocasolano, E-28006 Madrid, Spain - Author
ESRF, Spanish CRG Beamline BM25, SpLine, F-38000 Grenoble, France - Author
European Synchrotron Radiation Facility , CSIC - Instituto de Ceramica y Vidrio (ICV) - Author
European Synchrotron Radiation Facility , Hiroshima University - Author
Fdn Invest HM Hosp, Madrid 28050, Spain - Author
Hiroshima Univ, Dept Appl Chem, Hiroshima 7398527, Japan - Author
ICV CSIC, Inst Ceram & Vidrio, Madrid 28049, Spain - Author
IMDEA Nanociencia , Universidad CEU San Pablo , HM Hospitales - Author
IMDEA Nanociencia , Universidad Complutense de Madrid , CSIC - Instituto de Quimica Fisica Rocasolano (IQFR) - Author
Inst Madrileno Estudios Avanzados IMDEA Nanocienc, Madrid 28049, Spain - Author
Unidad Asociada IQFR CSIC UCM, Madrid 28040, Spain - Author
Univ Complutense Madrid, Ctr Nacl Microscopia Elect, E-28040 Madrid, Spain - Author
Univ Complutense Madrid, Dept Fis Mat, E-28040 Madrid, Spain - Author
Univ San Pablo CEU, Fac Med IMMA, Madrid 28925, Spain - Author
Universidad Complutense de Madrid - Author
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Abstract

Nowadays, iron oxide-based nanostructures are key materials in many technological areas. Their physical and chemical properties can be tailored by tuning the morphology. In particular, the possibility of increasing the specific surface area has turned iron oxide nanowires (NWs) into promising functional materials in many applications. Among the different possible iron oxide NWs that can be fabricated, maghemite/hematite iron oxide core/shell structures have particular importance since they combine the magnetism of the inner maghemite core with the interesting properties of hematite in different technological fields ranging from green energy to biomedical applications. However, the study of these iron oxide structures is normally difficult due to the structural and chemical similarities between both iron oxide polymorphs. In this work, we propose a route for the synthesis of maghemite/hematite NWs based on the thermal oxidation of previously electrodeposited iron NWs. A detailed spectroscopic analysis based on Raman, Mössbauer, and X-ray absorption shows that the ratio of both oxides can be controlled during fabrication. Transmission electron microscopy has been used to check the core/shell structure of the NWs. The biocompatibility and capability of internalization of these NWs have also been proven to show the potential of these NWs in biomedical applications.

Keywords
alpha-fe2o3fabricationfilmshematiteiron-oxideliving cellsmagnetic nanowiresnanoparticlesraman-spectroscopyFourier self-deconvolution

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Journal of Physical Chemistry C due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2017, it was in position 54/285, thus managing to position itself as a Q1 (Primer Cuartil), in the category Materials Science, Multidisciplinary.

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 1.57, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: Dimensions May 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-05-07, the following number of citations:

  • WoS: 15
  • Scopus: 16
  • OpenCitations: 17
Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-05-07:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 30.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 30 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 1.35.
  • The number of mentions on the social network X (formerly Twitter): 2 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: France; Japan.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (CORTES LLANOS, BELEN) .