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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: Synthesis and Characterization of γ-Fe2O3/ZnS Magnetic-Fluorescent Composite Nanoparticles
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 1156-1161)
Author(s): Ying-fa Shi, College of Materials Science and Engineering, Qingdao University of Science ＆ Technology Qingdao China
Wei Wang, College of Materials Science and Engineering, Qingdao University of Science ＆ Technology Qingdao China
Ke-zheng Chen, College of Materials Science and Engineering, Qingdao University of Science ＆ Technology Qingdao China
Abstract: The magnetic-fluorescent γ-Fe2O3/ZnS multifunctional nanoparticles were currently prepared with in situ process and their properties and applications were investigated and discussed. Nanosized magnetic Fe3O4 particles with average size of about 5-10 nm were firstly prepared by coprecipitation method and oxidized to γ-Fe2O3, which were surface modified with sodium citrate. Zn and S sources were then added to obtain γ-Fe2O3/ZnS composite nanoparticles. The average size of the composite nanoparticles was about 100-200 nm. The obtained magnetic fluorescent γ-Fe2O3/ZnS composite nanoparticles were characterized by TEM, SEM, magnetometer and fluorescence spectrum (FL), respectively, and in vitro cytotoxicity towards human cervical carcinoma Hela cells were determined by MTT assay.
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