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The Surface Modification of Nanocrystals for Biological and Environmental Applications

Published online by Cambridge University Press:  31 January 2011

Chunjiao Zhou ,
Pengfei Rong ,
Wei Wang ,
Wenjie Zhang ,
Qiang Wan  and
Bingsuo Zou
Chunjiao Zhou
Affiliation:
zcj69@163.com, hunan university, changsha, China
Pengfei Rong
Affiliation:
rongpengfei66@yahoo.com.cn, Central South University, The Radiological Department Of Third Xiang-Ya Hospital, changsha, China
Wei Wang
Affiliation:
wawe01cn@yahoo.com.cn, Central South University, changsha, China
Wenjie Zhang
Affiliation:
wenjiezhang8475@163.com, Hunan university, changsha, China
Qiang Wan
Affiliation:
wanneo@gmail.com, Hunan university, changsha, China
Bingsuo Zou
Affiliation:
zoubs@bit.edu.cn
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Abstract

Superparamagnetic nanoparticles can find many applications in different fields with greener techniques. The Fe3O4 nanoparticles less than 10nm coated with humic acid were synthesized by a chemical co-precipitation technique with cheap and environmental friendly iron salts and humic acid. The as-synthesized products were highly soluble in water. The efficacy for liver Magnetic resonance imaging (MRI) contrast agent was investigated by using it to the live rat and tumor-bearing rabbit models, on a conventional clinical 1.5 T MRI facility. Moreover the Fe3O4 –HA composite used in the Methylene Blue adsorption in neutral aqueous solution was studied too with high efficiency. The experimental results showed that the humic acid coated Fe3O4 superparamagnetic nanoparticles were suitalbe not only for liver MRI contrast agent, but also as adsorbents for removal of cationic organic dyes from neutral water.

Keywords

biomaterialadsorptionmagnetic properties
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1220: Symposium BB – Green Chemistry in Research and Development of Advanced Materials , 2009 , 1220-BB01-02
Copyright
Copyright © Materials Research Society 2010

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