نتایج جستجو برای: nano fe2o3

تعداد نتایج: 54005  

Journal: :Nanotechnology 2016
Chao Wang Yiqian Wang Xuehua Liu Huaiwen Yang Jirong Sun Lu Yuan Guangwen Zhou Federico Rosei

We report structure/property relationships in bicrystalline α-Fe2O3 nanowires (NWs) and nanoblades (NBs), synthesized by thermal oxidation of iron foils with different surface roughness. The electrical properties of individual nanostructures were studied by in situ transmission electron microscopy. Current-voltage (I-V) measurements using gold electrodes showed that a Schottky contact forms bet...

2009
Song Zhang Xiangjian Chen Chunrong Gu Yu Zhang Jindan Xu Zhiping Bian Di Yang Ning Gu

Recently, magnetic nanoparticles of iron oxide (Fe3O4, c-Fe2O3) have shown an increasing number of applications in the field of biomedicine, but some questions have been raised about the potential impact of these nanoparticles on the environment and human health. In this work, the three types of magnetic nanoparticles (DMSAFe2O3, APTS-Fe2O3, and GLU-Fe2O3) with the same crystal structure, magne...

Journal: :ACS applied materials & interfaces 2013
Guofeng Xia Ning Li Deyu Li Ruiqing Liu Chen Wang Qing Li Xujie Lü Jacob S Spendelow Junliang Zhang Gang Wu

We report an rGO/Fe2O3/SnO2 ternary nanocomposite synthesized via homogeneous precipitation of Fe2O3 nanoparticles onto graphene oxide (GO) followed by reduction of GO with SnCl2. The reduction mechanism of GO with SnCl2 and the effects of reduction temperature and time were examined. Accompanying the reduction of GO, particles of SnO2 were deposited on the GO surface. In the graphene nanocompo...

2014
Peng Luan Mingzheng Xie Dening Liu Xuedong Fu Liqiang Jing

Herein, we have fabricated rutile TiO2 nanorod-coupled α-Fe2O3 by a wet-chemical process. It is demonstrated that the visible activities for photoelectrochemical water oxidation and for degrading pollutant of α-Fe2O3 are greatly enhanced after coupling a proper amount of rutile nanorods. The enhanced activity is attributed to the prolonged lifetime and improved separation of photogenerated char...

Journal: :Chemical communications 2015
Olga Baidukova Helmuth Möhwald Aliaksei S Mazheika Dmitry V Sviridov Tatiana Palamarciuc Birgit Weber Pavel V Cherepanov Daria V Andreeva Ekaterina V Skorb

We present sonogenerated magnesium-hydrogen sponges for effective reactive hard templating. Formation of differently organized nanomaterials is possible by variation of sonochemical parameters and solution composition: Fe2O3 nanorods or composite dendritic Fe2O3/Fe3O4 nanostructures.

This study investigated the photo-degradation of methyl orange (MO) as a type of azo dye using a CuO/α-Fe2O3 nanocomposite. A CuO/α-Fe2O3 powder with a crystalline size in the range of 27-49 nm was successfully prepared using simple co-precipitation along with a sonication method. The characterization of the synthesized sample was done via XRD, FE-SEM, EDS, FTIR and DRS analyses. The Tauc equat...

2015
G.Naveen Kumar Y.V.Mohana Reddy K.Hemachandra Reddy

We report on synthesis of two highly disperse nanoparticles viz. Fe2O3 & f-Fe2O3 using chemical reduction method. Reaction was initiated to mix solution A (i.e. Fecl3 6H2o) into solution B (i.e. Fecl24H2o) together under the presence of ammonium to develop nanoparticles. Mechanical properties of above mentioned nanoparticles filled with polyester polymer nanocomposites were fabricated to assess...

Journal: :Nanoscale research letters 2016
Xintian Shao Jing Zhang Donghui Li Jingli Yue Zhenhua Chen

A novel modified ion selective electrode based on Fe2O3-clorprenaline/tetraphenylborate nanospheres (Fe2O3-CLPT NSs) as electroactive materials for the determination of clorprenaline hydrochloride (CLP) is described. The α-Fe2O3 nanoparticles (NPs) were prepared by hydrothermal synthesis, then self-assembled on CLP/tetraphenylborate (TPB) to form Fe2O3-CLPT NSs, which were used as a potentiomet...

2017
Junhyung Lee Seung-Yeop Kwak

While preparation of metal oxide from metal organic frameworks (MOFs) has been widely studied, crystal growth via thermal decomposition of MOFs in a confined space is rarely investigated. We demonstrate a confinement effect on the crystal growth via pyrolysis of MOFs at high temperature. Iron containing MOF (Fe-MIL-88A) was calcined inside a SiO2. The crystalline phase, particle size, morpholog...

Journal: :Molecules 2014
Tzong-Yuan Juang Shao-Ju Kan Yi-Yu Chen Yi-Lin Tsai Min-Guan Lin Long-Liu Lin

In this study, we synthesized water-soluble hyperbranched poly(amido acid)s (HBPAAs) featuring multiple terminal CO2H units and internal tertiary amino and amido moieties and then used them in conjunction with an in situ Fe2+/Fe3+ co-precipitation process to prepare organic/magnetic nanocarriers comprising uniformly small magnetic iron oxide nanoparticles (NP) incorporated within the globular H...

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