نتایج جستجو برای: fe2o3 nanoparticles

تعداد نتایج: 109941  

Journal: :Nanotechnology 2011
Taehyung Kim Le He Jason R Morales W P Beyermann Christopher J Bardeen

Nanoscale objects that combine high luminescence output with a magnetic response may be useful for probing local environments or manipulating objects on small scales. Ideally, these two properties would not interfere with each other. In this paper, we show that a fluorescent polymer host material can be doped with high concentrations of 20-30 nm diameter magnetic γ-Fe2O3 particles and then form...

2005
Pinar Akcora Xin Zhang Bindhu Varughese Robert M. Briber Peter Kofinas

A series of iron oxide doped norbornene (NOR)/deuterated norbornene dicarboxylic acid (NORCOOH) diblock copolymers were synthesized and characterized by X-ray photoelectron spectroscopy (XPS), small angle neutron scattering (SANS) and superconducting quantum interference device (SQUID) experiments. g-Fe2O3 nanoparticles were synthesized within the microdomains of diblock copolymers with volume ...

2016
Gi Dae Park Jung Sang Cho Jung-Kul Lee Yun Chan Kang

Uniquely structured FeSe(x)-reduced graphene oxide (rGO) composite powders, in which hollow FeSe(x) nanoparticles are uniformly distributed throughout the rGO matrix, were prepared by spray pyrolysis applying the nanoscale Kirkendall diffusion process. Iron oxide-rGO composite powders were transformed into FeSe(x)-rGO composite powders by a two-step post-treatment process. Metallic Fe nanocryst...

2014
Ying Lin Xinyu Wang Gang Qian James J. Watkins

Ordered mesoporous carbon/iron oxide composites were prepared by cooperative self-assembly of poly(tbutyl acrylate)-block-polyacrylonitrile (PtBA-b-PAN), which contains both a carbon precursor block and a porogen block, and phenol-functionalized iron oxide nanoparticles (NPs). Because of the selective hydrogen bonding between the phenol-functionalized iron oxide NPs and PAN, the NPs were prefer...

Journal: :Clean Technologies and Environmental Policy 2021

Assorted common contaminants namely organic dyes and nitro compounds are generated by various industries have caused alarming problems for the environment humans. The development of effective newer methods to eliminate these is imperative. One way pollutants deploy sustainable heterogeneous catalyst systems. Accordingly, a novel efficient magnetic nanocomposite comprising graphitic carbon nitri...

Journal: :Clean Technologies and Environmental Policy 2021

This research investigates the effects of addition Fe2O3 and Al2O3 nanoparticles (30, 60 90 ppm) Fe2O3–Al2O3 hybrid to pure diesel fuel on combustion, performance emission characteristics a engine. The results indicated that blends improved combustion (in-cylinder pressure heat release rate), (power, consumption thermal exergy efficiency) showed peak increased by 4% rate was 15% in comparison w...

Journal: :Iraqi journal of science 2021

In this paper, ferric oxide nanoparticles) Fe2O3 NPs( were synthesized directly on a quartz substrate in vacuum by pulse laser deposition technique using Nd:YAG at different energies (171, 201,363 mJ/pulse). The slides then heated to 700o C for 1 hour. structural, optical, morphological, and electrical properties studied. optical indicated that the prepared thin films have an energy gap ranging...

2018
Dominik Seeburg Dongjing Liu Joerg Radnik Hanan Atia Matthias Schneider Andreas Martin Sebastian Wohlrab

Fe2O3, Co3O4 and NiO nanoparticles were prepared via a citrate method and further functionalized with Pd by impregnation. The pure oxides as well as Pd/Fe2O3, Pd/Co3O4, and Pd/NiO (1, 5 and 10 wt % Pd) were employed for catalytic methane combustion under methane lean (1 vol %)/oxygen rich (18 vol %, balanced with nitrogen) conditions. Already, the pure metal oxides showed a high catalytic activ...

2010
Alexandra Gramowski Juliane Flossdorf Kunal Bhattacharya Ludwig Jonas Margareta Lantow Qamar Rahman Dietmar Schiffmann Dieter G. Weiss Elke Dopp

BACKGROUND Nanomaterials are extensively used in industry and daily life, but little is known about possible health effects. An intensified research regarding toxicity of nanomaterials is urgently needed. Several studies have demonstrated that nanoparticles (NPs; diameter < 100 nm) can be transported to the central nervous system; however, interference of NPs with the electrical activity of neu...

2015
Girish S. Gund Deepak P. Dubal Nilesh R. Chodankar Jun Y. Cho Pedro Gomez-Romero Chan Park Chandrakant D. Lokhande

The facile and economical electrochemical and successive ionic layer adsorption and reaction (SILAR) methods have been employed in order to prepare manganese oxide (MnO2) and iron oxide (Fe2O3) thin films, respectively with the fine optimized nanostructures on highly flexible stainless steel sheet. The symmetric and asymmetric flexible-solid-state supercapacitors (FSS-SCs) of nanostructured (na...

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