Key Words:Photothermal conversion efficiency; Fe3O4@CuS; Composite; Magnetic
Abstract:Photothermal functional Fe3O4@CuS microspheres have been prepared successfully by a simple chemical deposition method. The adsorption of cetyltrimethyl-ammonium bromide (aAB) on the magnetic microspheres plays an important role in forming the structure of the composites. The present materials are characterized with XRD, TEM, SEM, FTIR, and UV-VIS-NIR spectrophotometer. The results show that Fe3O4 microspheres are coated by CuS layer with thickness of 10 nm. The saturation magnetization value of Fe3O4@CuS core-shell microspheres is 27 emuig at room temperature and the sample possesses excellent magnetic response in the presence of applied magnetic field. Moreover, these microspheres exhibit good dispersion, suitable size and significant photothermal conversion efficiency up to 20.7% at 808 nm laser irradiation. Fluctuation value of the highest temperature of Fe3O4@CuS dispersion over four times LASER ON/OFF indicates that photothermal stability of Fe3O4@CuS microspheres is good. (C) 2017 Elsevier B.V. All rights reserved.
Volume:193
Translation or Not:no