Surface reactivity of iron oxide nanoparticles by microwave-assisted synthesis; Comparison with the thermal decomposition route

Oana Pascu, Elisa Carenza, Martí Gich, Sònia Estradé, Francesca Peiró, Gervasi Herranz, Anna Roig

    Research output: Contribution to journalArticleResearchpeer-review

    70 Citations (Scopus)

    Abstract

    Microwave-assisted chemistry is becoming very attractive in all areas of synthetic chemistry; it is fast, easy to operate, efficient in terms of energy consumption and environmentally friendly. However, a quantitative assessment of this chemical procedure with respect to other widely used chemical routes is lacking. Focusing in the preparation of iron oxide nanoparticles of comparable sizes, we have analyzed the performance of microwave-assisted synthesized nanoparticles compared to those obtained by the widespread thermal decomposition process of metal complexes. On the basis of a multidisciplinary experimental approach, we have unveiled that microwave-synthesized nanoparticles exhibit a surface reactivity significantly smaller than their thermal decomposition counterparts. We ascribe such dissimilarities to the different configurations of crystallographic faceting planes resulting from the particularities of both synthesis routes. We also show that the microwave route allows a direct stabilization of the particles in organic or aqueous media by using either steric or electrostatic stabilizers. A simplified life cycle analysis, as a preliminary framework toward nanoparticles eco-design, shows also a cost-effective positive balance for the microwave synthesis. Our results are of relevance for a broad range of applications including health, information storage, environmental remediation, sensors, or catalysis. © 2012 American Chemical Society.
    Original languageEnglish
    Pages (from-to)15108-15116
    JournalJournal of Physical Chemistry C
    Volume116
    Issue number28
    DOIs
    Publication statusPublished - 19 Jul 2012

    Fingerprint Dive into the research topics of 'Surface reactivity of iron oxide nanoparticles by microwave-assisted synthesis; Comparison with the thermal decomposition route'. Together they form a unique fingerprint.

    Cite this