نتایج جستجو برای: nano magnetic fe3o4

تعداد نتایج: 389405  

Journal: :Dalton transactions 2017
Lanfang Ren Xijian Liu Qian Wang Lijuan Zhang Guoying Deng Feng Zhou Jie Lu

In this study, a multifunctional nano-drug (PTX-loaded Cys-Fe3O4/CuS@BSA nanocomposite), which performs well in hydrophobic drug delivery, magnetic resonance imaging (MRI) and chemo-photothermal combination therapy, has been successfully synthesized via a facile method with several biocompatible agents. The characterization verified that our as-obtained nanocarrier has a preferable average diam...

Journal: :Physical chemistry chemical physics : PCCP 2014
Kristina Tschulik Richard G Compton

Superparamagnetic nanoparticles (NPs) are used in a variety of magnetic field-assisted chemical and medical applications, yet little of their fate during magnetic field interrogation is known. Here, fundamental and new insights in this are gained by cathodic particle coulometry. This methodology is used to study individual Fe3O4 NPs in the presence and absence of a magnetic field. It is first n...

2014
Yanping Cai Karine Chesnel Roger Harrison Andrew Westover

Spin and Orbital Moments and Magnetic Order in Fe3O4 Nanoparticle Assemblies Yanping Cai Department of Physics and Astronomy Master of Science Fe3O4 magnetic nanoparticles of 5 to 11 nm in size were prepared by organic methods. Particle size was analyzed by both X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM) techniques. Zero Field Cooling (ZFC) / Field Cooling (FC) and magne...

Journal: :The journal of physical chemistry. B 2006
Qing Song Yong Ding Zhong Lin Wang Z John Zhang

Magnetic magnetite (Fe3O4) nanocrystals have been synthesized by combining nonhydrolytic reaction with seed-mediated growth. The shape of these magnetite nanocrystals can be controlled either as pure spheres or a mixture of mainly faceted nanocrystals. Faceted magnetite nanocrystals consist of truncated tetrahedral platelets (TTPs), truncated octahedrons (TOs), and octahedrons (OTs). Transmissi...

2017
Ken-Lin Chang Yuan-Chung Lin Lee Cheng Shang-Cyuan Chen Sung-Yuan Mao Cláudia Gomes Silva

In this study, a nano-Ca(OH)2/Fe3O4 catalyst was used to produce biodiesel from a 1:1 mixed jatropha-castor oil. By loading Ca(OH)2 onto Fe3O4 nanoparticles, it increased the specific surface area by almost 40%, which improved the catalytic activity as it provided a larger area for the reactants to interact. The main purpose of mixing jatropha oil with castor oil was to lower the viscosity of t...

2016
Zahra PANJALI Ali Akbar ASGHARINEZHAD Homeira EBRAHIMZADEH Niloofar JALILIAN Rasoul YARAHMADI Seyed Jamaleddin SHAHTAHERI

BACKGROUND The analysis of heavy metals at trace level is one of the main toxicologists concern, due to their vital rules in human`s life. Cadmium is one of these toxic heavy metals, which released to the environment from various industries. METHODS In order to determine Cd (II) ions in various matrices magnetic ion-imprinted polymer (IIP) method has been developed and applied. This nano-sorb...

The present study synthesizes a novel adsorbent by coating Fe3O4 magnetic nanoparticles with amino functionalized mesoporous silica. The FTIR spectrums indicate that silica has been successfully coated on the surface of Fe3O4 and 3-aminopropyl tri methoxysilane compound have been grafted to the surface of silica-coated Fe3O4. The XRD analysis shows the presence of magnetite phase with cubic spi...

Journal: :Materials and Structures 2021

Abstract The flow behavior of cementitious-like (limestone powder) suspension containing nano-Fe 3 O 4 particles at constant shear rate 10 s −1 , characterized by the evolution apparent viscosity over time, is investigated under various magnetic fields. Results show that limestone powder flow-state exhibits remarkable magneto-rheological responses, reflected a significant increase in after appl...

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