کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1331203 1500116 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Vapour phase approach for iron oxide nanoparticle synthesis from solid precursors
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Vapour phase approach for iron oxide nanoparticle synthesis from solid precursors
چکیده انگلیسی

A new non-solution mediated approach to the synthesis of iron oxide nanoparticles directly from solid FeCl2 salt precursors has been developed. The method is rapid, simple and scalable. The structural properties and the phase of the resulting iron oxide particles has been determined by a range of methods including XRD, FT-IR and Mössbauer spectroscopy, and the phase is shown to be maghemite (γ-Fe2O3). The magnetic properties of the iron oxide particles have been measured using SQUID, confirming superparamagnetic behaviour of the powder and a saturation magnetization of 53.0 emu g−1 at 300 K. Aqueous dispersions at increasing concentrations were prepared and their heating rate under a 400 kHz alternating magnetic field measured. The specific absorption rate (SAR) of the iron oxide was found to be 84.8 W g−1, which makes the material suitable for the formulation of ferrofluids or ferrogels with RF heating properties.

Graphical AbstractSuperparamagnetic iron oxide nanoparticles obtained by a novel vapour phase approach.Figure optionsDownload as PowerPoint slideHighlights
► Novel vapour phase (non-solvent) approach for iron oxide nanoparticle synthesis.
► Attractive alternative approach to the present co-precipitation method.
► Better magnetic properties with high coercivity of nanoparticles.
► A high specific absorption rate (SAR) for hyperthermia applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Solid State Chemistry - Volume 200, April 2013, Pages 150–156
نویسندگان
, , , , , ,