scholarly journals PEGylated reduced-graphene oxide hybridized with Fe3O4 nanoparticles for cancer photothermal-immunotherapy

2019 ◽  
Vol 7 (46) ◽  
pp. 7406-7414 ◽  
Author(s):  
Lu Wang ◽  
Meng Wang ◽  
Benqing Zhou ◽  
Feifan Zhou ◽  
Cynthia Murray ◽  
...  
Keyword(s):  
Immune Response ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Fe3o4 Nanoparticles ◽  
Tumor Metastasis ◽  
Specific Immune Response ◽  
Reduced Graphene ◽  
Inhibit Tumor Metastasis ◽  
Tumor Specific Immune Response

A novel nanocomposite was designed by hybridizing Fe3O4 with reduced-graphene oxide for imaging-guided photothermal-immunotherapy. It is an excellent agent for phototherapy to facilitate a tumor-specific immune response to inhibit tumor metastasis.

scholarly journals Reduced Graphene Oxide-Wrapped Super Dense Fe3O4 Nanoparticles with Enhanced Electromagnetic Wave Absorption Properties

Nanomaterials ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 845
Author(s):  
Qi Yu ◽  
Yiyi Wang ◽  
Ping Chen ◽  
Weicheng Nie ◽  
Hanlin Chen ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electromagnetic Wave ◽  
Electron Microscope ◽  
Reduced Graphene Oxide ◽  
Fe3o4 Nanoparticles ◽  
Absorption Properties ◽  
Electromagnetic Wave Absorption ◽  
X Ray ◽  
Wave Absorption ◽  
Reduced Graphene

The efficient preparation of electromagnetic wave absorbing materials with low density and excellent electromagnetic wave absorption remains a considerable challenge. In this study, reduced graphene oxide (RGO) wrapped Fe3O4 nanoparticles (NPs) were synthesized based on one-step reaction by the reduction of graphene oxide (GO), and the generation of super-fine Fe3O4 NPs was achieved. The phase structure, chemical composition, micromorphology, and magnetism were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscope (XPS), scanning electron microscope (SEM), transmission electron microscope (TEM), and vibrating sample magnetometer (VSM), respectively. The electromagnetic characteristics were evaluated on a vector network analyzer by the coaxial line method. The results showed that super-fine Fe3O4 NPs with an average size of 6.18 nm are densely distributed on the surface of graphenes. The RGO/Fe3O4 nanocomposites exhibited excellent microwave absorption properties with a minimum reflection loss (RL) of up to −55.71 dB at 6.78 GHz at 3.5 mm thickness and the highest effective absorption bandwidth with RL values exceeding −10 dB is 4.76 GHz between 13.24 and 18 GHz at 1.7 mm thickness. This work provides a concise method for the development of RGO supported super dense Fe3O4 nanocomposites for high performance electromagnetic absorption applications.

Reduced Graphene Oxide Decorated with Fe3O4 Nanoparticles as High Performance Anode for Lithium Ion Batteries

2012 ◽  
Vol 519 ◽  
pp. 108-112 ◽  
Author(s):  
Huai Liang Xu ◽  
Yang Shen ◽  
Hong Bi
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Batteries ◽  
Reduced Graphene Oxide ◽  
Fe3o4 Nanoparticles ◽  
High Performance ◽  
Specific Capacity ◽  
Lithium Ion ◽  
A Value ◽  
Reduced Graphene ◽  
20 Nm

A composite of reduced graphene oxide (r-GO) decorated densely with 20 nm Fe3O4 nanoparticles has been prepared by a facile solvothermal method. The Fe3O4/r-GO composites are used as the anode material for lithium ion batteries, which show an extremely high initial discharge specific capacity of 1702 mAh/g. Compared with the pure Fe3O4 nanoparticles, the composite anode exhibits a higher capacity retention capability since its specific capacity fades very slowly and retains a value of 711 mAh/g after 30 cycles. The r-GO sheets worked as an ultra-thin and conductive substrate can not only prevent the detachment and agglomeration of Fe3O4 nanoparticles, but also compensate for the volume change of Fe3O4 nanoparticles during the charge-discharge cycles, and thus extend the cycling life of the Fe3O4/r-GO composites electrode.

scholarly journals Sonochemical fabrication of Fe3O4 nanoparticles on reduced graphene oxide for biosensors

2013 ◽  
Vol 20 (3) ◽  
pp. 872-880 ◽  
Author(s):  
Shenmin Zhu ◽  
Jingjing Guo ◽  
Junping Dong ◽  
Zhaowen Cui ◽  
Tao Lu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Fe3o4 Nanoparticles ◽  
Reduced Graphene
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