Architecting hierarchical shell porosity of hollow prussian blue‐derived iron oxide for enhanced Li storage

2019 ◽  
Vol 276 (2) ◽  
pp. 53-62 ◽  
Author(s):  
Z. ZHAO ◽  
X. LIU ◽  
C. LUAN ◽  
X. LIU ◽  
D. WANG ◽  
...  
Keyword(s):  
Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 776 ◽  
Author(s):  
Alowasheeir Azhar ◽  
Yusuke Yamauchi ◽  
Abeer Enaiet Allah ◽  
Zeid A. Alothman ◽  
Ahmad Yacine Badjah ◽  
...  

This work reports the successful preparation of nanoporous iron oxide/carbon composites through the in-situ growth of Prussian blue (PB) nanoparticles on the surface of graphene oxide (GO) nanosheets. The applied thermal treatment allows the conversion of PB nanoparticles into iron oxide (Fe2O3) nanoparticles. The resulting iron oxide/carbon composite exhibits higher specific capacitance at all scan rates than pure GO and Fe2O3 electrodes due to the synergistic contribution of electric double-layer capacitance from GO and pseudocapacitance from Fe2O3. Notably, even at a high current density of 20 A g−1, the iron oxide/carbon composite still shows a high capacitance retention of 51%, indicating that the hybrid structure provides a highly accessible path for diffusion of electrolyte ions.


2016 ◽  
Vol 12 (5) ◽  
pp. 1001-1010 ◽  
Author(s):  
Constantin Scharlach ◽  
Larissa Müller ◽  
Susanne Wagner ◽  
Yuske Kobayashi ◽  
Harald Kratz ◽  
...  

RSC Advances ◽  
2017 ◽  
Vol 7 (54) ◽  
pp. 33994-33999 ◽  
Author(s):  
Shunsuke Tanaka ◽  
Rahul R. Salunkhe ◽  
Yusuf Valentino Kaneti ◽  
Victor Malgras ◽  
Saad M. Alshehri ◽  
...  

This work reports the synthesis of hybrid materials combining graphene oxide (GO) sheets with Prussian blue (PB) nanoparticles which can be converted into porous GO/iron oxide hybrids for supercapacitor applications.


2012 ◽  
Vol 10 (2) ◽  
pp. 164-170 ◽  
Author(s):  
Javier Bustamante Mamani ◽  
Jackeline Moraes Malheiros ◽  
Ellison Fernando Cardoso ◽  
Alberto Tannús ◽  
Paulo Henrique Silveira ◽  
...  

OBJECTIVE: The aim of the current study was to monitor the migration of superparamagnetic iron oxide nanoparticle (SPION)-labeled C6 cells, which were used to induce glioblastoma tumor growth in an animal model, over time using magnetic resonance imaging (MRI), with the goal of aiding in tumor prognosis and therapy. METHODS: Two groups of male Wistar rats were used for the tumor induction model. In the first group (n=3), the tumors were induced via the injection of SPION-labeled C6 cells. In the second group (n=3), the tumors were induced via the injection of unlabeled C6 cells. Prussian Blue staining was performed to analyze the SPION distribution within the C6 cells in vitro. Tumor-inducing C6 cells were injected into the right frontal cortex, and subsequent tumor monitoring and SPION detection were performed using T2- and T2*-weighted MRI at a 2T field strength. In addition, cancerous tissue was histologically analyzed after performing the MRI studies. RESULTS: The in vitro qualitative evaluation demonstrated adequate distribution and satisfactory cell labeling of the SPIONs. At 14 or 21 days after C6 injection, a SPION-induced T2- and T2*-weighted MRI signal reduction was observed within the lesion located in the left frontal lobe on parasagittal topography. Moreover, histological staining of the tumor tissue with Prussian Blue revealed a broad distribution of SPIONs within the C6 cells. CONCLUSION: MRI analyses exhibit potential for monitoring the tumor growth of C6 cells efficiently labeled with SPIONs.


2013 ◽  
Vol 25 (14) ◽  
pp. 2803-2811 ◽  
Author(s):  
Nilantha P. Wickramaratne ◽  
Vindya S. Perera ◽  
Byung-Wook Park ◽  
Min Gao ◽  
Grant W. McGimpsey ◽  
...  

1961 ◽  
Vol 9 (2) ◽  
pp. 263-270 ◽  
Author(s):  
Goetz W. Richter

Several months following parenteral injections of saccharated iron oxide into DBA/2J mice, granules rich in iron were found in nuclei of scattered parenchymal liver cells as well as in the cytoplasm. As seen in the light microscope, the intranuclear granules were brown; most of them measured between 0.5 µ and 1 µ in cross-section. They gave positive Prussian blue tests, and were not selectively stainable with pyronine. Electron micrographs of the granules showed closely packed aggregates of ferritin molecules, occasionally in paracrystalline order. The intranuclear collections were often surrounded by bands of material of moderate opacity. Scattered ferritin molecules and collections of such molecules were also present in the cytoplasm of many liver cells, but there seemed to be no quantitative relationship between intranuclear and cytoplasmic ferritin. Liver cells from untreated control mice failed to reveal intranuclear deposits of ferritin. Although the site of origin of the intranuclear aggregates of ferritin is unknown, the findings suggest the possibility that under suitable circumstances ferritin synthesis may take place within nuclei of liver cells—perhaps induced by the presence of colloidal iron.


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