کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
613967 | 880734 | 2006 | 7 صفحه PDF | دانلود رایگان |
A simple procedure to coat silica spheres with smooth layers of iron compounds is reported. It is based on the forced hydrolysis (60–85 °C) of iron(III) acetylacetonate solutions containing the silica cores and sodium dodecylsulfate (SDS). The role that the iron(III) precursor and SDS play in the formation of uniform coatings is discussed. The thermal evolution of the composites up to the crystallization of the initially amorphous coating was also studied. Finally, the core-shell particles, as prepared, were thermally reduced under hydrogen atmosphere to produce magnetic composites whose magnetic properties were also evaluated as a function of the reduction temperature.
Magnetic iron/silica nanocomposites were prepared from core-shell spherical particles by thermal reduction with hydrogen and their magnetic properties were modulated by varying the reduction temperature.Figure optionsDownload as PowerPoint slide
Journal: Journal of Colloid and Interface Science - Volume 294, Issue 2, 15 February 2006, Pages 355–361