Inductive Heating Property of Superparamagnetic Graphene Nanosheets-Fe3O4 Nanoparticles Hybrid in an AC Magnetic Field for Localized Hyperthermia

2017 ◽  
Vol 727 ◽  
pp. 347-352 ◽  
Author(s):  
Cheng Li ◽  
Dong Lin Zhao ◽  
Fei Fei Sun ◽  
Xia Jun Wang ◽  
Ran Ran Yao

The superparamagnetic graphene nanosheets–Fe3O4 nanoparticles (GNs–Fe3O4) hybrid has been successfully prepared via an easy and scalable chemical precipitation method. The inductive heat property of GNs–Fe3O4 hybrid in an alternating current (AC) magnetic field was investigated. The potential of GNs–Fe3O4 hybrid was evaluated for localized hyperthermia treatment of cancers. The GNs–Fe3O4 hybrid exhibits a superparamagnetic behavior, its specific saturation magnetization, Ms is 66.963 emu g-1. After exposed in the AC magnetic field for 1140 sec, the temperature of physiological saline suspension containing GNS–Fe3O4 hybrid were 81 oC. The GNs–Fe3O4 hybrid will be useful as good thermoseeds for localized hyperthermia treatment of cancers.

2012 ◽  
Vol 463-464 ◽  
pp. 533-537 ◽  
Author(s):  
Shui Sheng Wu ◽  
Ya Ming Wang ◽  
Qing Ming Jia ◽  
Li Li Gu ◽  
Yan Lin Sun

A well-organized composite of graphene nanosheets decorated with FeC2O4 particles was synthesized through a simple chemical precipitation method. The FeC2O4 nanoparticles obtained were 100-150 nm in size and homogeneously anchored on graphene sheets as spacers to keep the neighboring sheets separated. The FeC2O4-graphene exhbited excellent performances in absorption propties and supercapacitor make potential uses as environment and energy storage materials in future.


2007 ◽  
Vol 28 (12) ◽  
pp. 1017-1022 ◽  
Author(s):  
Shinfuku Nomura ◽  
Shinobu Mukasa ◽  
Hiroshi Yamasaki ◽  
Tsunehiro Maehara ◽  
Hiromichi Aono ◽  
...  

Author(s):  
A.O. Synytsia ◽  
◽  
A.P. Iatsenko ◽  
O. Ye. Sych ◽  
T.Ye. Babutina ◽  
...  

Magnetite powder (FeO·Fe2O3 or Fe3O4) is obtained by the chemical precipitation method, using FeCl3·6H2O and FeCl2·4H2O as a starting materials in the presence of hydrazine N2H4 at a temperature of 80 °C. X-ray diffraction analysis, infrared spectroscopy, and scanning electron microscopy are used for the study of the phase composition and morphology of the synthesized powder. Its specific surface area and magnetic properties such as, in particular, the specific saturation magnetization, coercive force and residual induction are investigated. It is established that the composition of the synthesized powder is represented by magnetite as the main phase with a small admixture of hematite. It is shown that the particles of the obtained magnetite have sizes of 33-84 nm and tend to the agglomeration. The prepared powder has superparamagnetic properties (specific magnetization — 35 A · m2/kg, coercive force — 0.24 kA/m, residual induction — 0.009 T) and is promising for the biocomposite creation.


2013 ◽  
Vol 320 ◽  
pp. 518-521 ◽  
Author(s):  
Dong Lin Zhao ◽  
Li Zhong Bai ◽  
Xiao Li ◽  
Dong Dong Zhang

The superparamagnetic graphene/Fe3O4nanocomposite has been successfully prepared via an easy and scalable chemical precipitation method. High quality graphene sheets were prepared from natural flake graphite by oxidation, rapid expansion and ultrasonic treatment. The structure of graphene and graphene/Fe3O4nanocomposite was investigated by transmission electron microscopy, Xray diffraction and Fourier transform infrared spectroscopy. The graphene sheets possess a curled morphology consisting of a thin wrinkled paper-like structure. The graphene/Fe3O4nanocomposite exhibits a superparamagnetic behavior, its specific saturation magnetization,Msis 38.92 emu g-1.


2012 ◽  
Vol 68 ◽  
pp. 399-401 ◽  
Author(s):  
Li-Zhong Bai ◽  
Dong-Lin Zhao ◽  
Ying Xu ◽  
Ji-Ming Zhang ◽  
Yun-Lei Gao ◽  
...  

2007 ◽  
Vol 334-335 ◽  
pp. 1189-1192 ◽  
Author(s):  
Dong Lin Zhao ◽  
Xian Wei Zeng ◽  
Qi Sheng Xia ◽  
Jin Tian Tang

The magnetite (Fe3O4) nanoparticles were prepared by coprecipitation of Fe3+ and Fe2+ with aqueous NaOH solution. The Fe3O4/polyaniline (PANI) magnetic composite nanoparticles with core-shell structure with diameter of 30-50 nm were prepared via an in-situ polymerization of aniline in aqueous solution containing Fe3O4 magnetic fluid. The inductive heat property of Fe3O4/polyaniline composite nanoparticles in an alternating current (AC) magnetic field was investigated. The potential of Fe3O4/polyaniline nanoparticles was evaluated for localized hyperthermia treatment of cancers. The saturation magnetization Ms and coercivity Hc of Fe3O4 nanoparticles are 50.05 emu/g and 137 Oe respectively, the Fe3O4/polyaniline composite nanoparticles, 26.34 emu/g and 0 Oe. Exposed in the alternating current (AC) magnetic field for 29 min, the temperatures of physiological saline suspension containing Fe3O4 nanoparticles or Fe3O4/polyaniline composite nanoparticles are 63.6 °C and 52.4 °C respectively. The Fe3O4/polyaniline composite nanoparticles would be useful as good thermoseeds for localized hyperthermia treatment of cancers.


2006 ◽  
Vol 1 (4) ◽  
pp. 198-201 ◽  
Author(s):  
Dong-Lin Zhao ◽  
Hai-Long Zhang ◽  
Xian-Wei Zeng ◽  
Qi-Sheng Xia ◽  
Jin-Tian Tang

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