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Nanoengineering of Surface Modified Silica Particles to Form Core-Shell and HollowNanospheres of Iron Oxide

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Abstract:

The method of synthesizing nanoshell of α-Fe2O3 on silica core nanoparticle and hollow α-Fe2O3 nanoparticles is described. The silica particles of ∼160 nm diameter were surface modified using 3-aminopropyltrimethoxysilane (APS) for easy adsorption of iron on it. These particles were treated with FeCl3 and further heat treated up to 1000 °C to get α-Fe2O3 shell of thickness ∼20 nm. The hollow iron oxide particles were prepared using sacrificial core removal using dilute HF solution. The particles were characterized for their structure, morphology, bonding and surface chemistry using Transmission Electron Microscopy (TEM), X-ray Diffraction (XRD), Fourier Transform Infra Red Spectroscopy (FTIR), and X-ray Photoelectron Spectroscopy (XPS).

Keywords: CORE-SHELL; HOLLOW; IRON OXIDE; NANOSPHERES; SILICA CORE

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2007.854

Publication date: 2007-10-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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