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首页> 外文期刊>Nanotechnology >Synthesis of Fe3O4@Gd2O3:Tb3+@SiOx multifunctional nanoparticles and their luminescent, magnetic and hyperthermia properties
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Synthesis of Fe3O4@Gd2O3:Tb3+@SiOx multifunctional nanoparticles and their luminescent, magnetic and hyperthermia properties

机译：Fe3O4 @ Gd2O3：Tb3 + @ SiOx多功能纳米粒子及其发光，磁性和热疗性能的合成

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摘要

Multifunctional Fe3O4@Gd2O3:Tb3+@SiOx nanoparticles were successfully synthesized by co-precipitation and polyol methods. The synthesized nanoparticles were composed by cubic phase as core of Fe(3)O(4)and Gd2O3:Tb(3+)and the shell of amorphous SiOx. The composites exhibited a spherical shape with a diameter of 10-15 nm and highly uniform dispersion. They showed not only excellent fluorescence under excitation at a wavelength of 278 nm, but also strong magnetic responsiveness (M-S= 24.040 emu g(-1)). The results of magnetic resonance imagingin vitro(r(1)= 6.00 mm(-1)s(-1), r(2)= 63.95 mm(-1)s(-1)) showed that the samples could be used as T-1-positive and T-2-negative contrast agents. In addition, it was found that Fe3O4@Gd2O3:Tb3+@SiOx attains hyperthermia temperature (43 degrees C) in 90 s under the alternating current magnetic field, and their specific absorption rate (229.9 w g(-1)) was higher than that of Fe3O4(183.92 w g(-1)). Hence, the multifunctional nanoparticle could be used for the diagnosis and therapy of cancer.
机译：通过共沉淀和多元醇方法成功地合成了多功能Fe3O4 @ Gd2O3：Tb3 + / @ SiOx纳米粒子。合成的纳米颗粒由Cu（3）O（4）和Gd2O3：Tb（3+）和无定形SiOx的壳的核构成。复合材料表现出一种直径为10-15nm和高度均匀的分散体的球形形状。它们在波长为278nm的激发下显示出优异的荧光，但也具有强的磁反应性（M-S = 24.040 emu g（-1））。磁共振成像体外（R（1）= 6.00mm（-1）S（-1），R（2）= 63.95mm（-1）S（-1））的结果表明样品可用作T-1阳性和T-2阴性造影剂。此外，发现Fe3O4 @ Gd2O3：TB3 + / @ SiOx在交流磁场下达到90秒中的热疗温度（43摄氏度），其特定的吸收率（229.9Wg（-1））高于Fe3O4（183.92 Wg（-1））。因此，多官能纳米颗粒可用于癌症的诊断和治疗。

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