Synthesis and Characterization of Fe3O4-CdX (X = S, Se) Core-Shell Nanoparticles
Authors: Patel, Daksha; Chang, Yongmin; Kim, Tae Jeong; Jung, Myung-Hwa; Lee, Gang Ho
Source: Journal of Nanoscience and Nanotechnology, Volume 8, Number 9, September 2008 , pp. 4826-4829(4)
Publisher: American Scientific Publishers
Abstract:We report a facile one-pot synthesis of Fe3O4-CdX (X = S, Se) core-shell nanoparticles and characterized them with XRD, TEM, squid magnetometer, and UV-visible absorption and PL spectrometers. We observed that the core Fe3O4 nanoparticles showed a superparamagnetism at room temperature, whereas the shell CdX (X = S, Se) showed blue-shifts from the bulk materials in UV-visible absorption spectra, due to quantum confinement effect. These superparamagnetic and optical properties of the Fe3O4-CdX (X = S, Se) core-shell nanoparticles can be used for both MR and optical imagings. This dual imaging capability will increase a possibility of an early observation of disease such as cancer.
Document Type: Research article
Publication date: 2008-09-01
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