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    Green synthesis and surface properties of Fe3O4@SA core-shell nanocomposites

    Year: 2014

    Journal: APPLIED SURFACE SCIENCE, Vol. 301, p 244-249, 20150722

    Authors: Cao, Huimin; Li, Juchuan; Shen, Yuhua; Li, Shikuo; Huang, Fangzhi; Xie, Anjian

    Organizations: Anhui Univ, Sch Chem & Chem Engn, Hefei 230601, Peoples R China; Univ Kentucky, Dept Chem & Mat Engn, Lexington, KY 40506 USA

    In this paper, a one-step, economic and green approach was explored to prepare Fe3O4 nanoparticles by using L-cysteine as reducer and disperser without any inert gas protection. The Fe3O4 nanoparticles were then modified with stearic acid (SA) to form Fe3O4@SA core-shell nanocomposites. The experiment results indicate that the core-shell nanocomposites prepared could form monolayer on the water surface or films by means of Langmuir-Blodgett (LB) technology due to their hydrophobic and lipophilic properties. Also the composites exhibit paramagnetism, which make product dispersed stably in the oil medium to form magnetic fluid. Moreover, they are developed as sorbents to remove oil from water surface. (C) 2014 Elsevier B.V. All rights reserved.