نتایج جستجو برای: modified mnfe2o4 nps

تعداد نتایج: 261347  

2017
Weien Lai Oday Mazin Abdulmunem Pablo del Pino Beatriz Pelaz Wolfgang J. Parak Qian Zhang Huaiwu Zhang

This paper presents a significant effect of manganese ferrite nanoparticles (MnFe2O4 NPs) on the increase of the surface photoconductivity of semiconductors. Herein, the optical characterization of photo-excited carriers of silicon coated with MnFe2O4 NPs was studied by using THz time-domain spectroscopy (THz-TDs). We observed that silicon coated with MnFe2O4 NPs provided a significantly enhanc...

2017
MUHAMMAD HASSAN SAFDAR HUMNA HASAN MARIAM ANEES ZAHID HUSSAIN

Objective: On account of several complications and adverse effects associated with the use of conventional chemotherapeutic regimen, the advanced drug-targeted therapies have gained the remarkable attention of the researchers due to their fabulous pharmaceutical and therapeutic advantages. The present study was designed with the aim to synthesize manganese ferrite nanoparticles (MnFe2O4 NPs) an...

Journal: :Physical chemistry chemical physics : PCCP 2015
Hyon-Min Song Jeffrey I Zink Niveen M Khashab

A series of magnetically active ferrite nanoparticles (NPs) are prepared by using Mn oxide NPs as seeds. A Verwey transition is identified in Fe3O4 NPs with an average diameter of 14.5 nm at 96 K, where a sharp drop of magnetic susceptibility occurs. In MnFe2O4 NPs, a spin glass-like state is observed with the decrease in magnetization below the blocking temperature due to the disordered spins ...

Journal: :Nanoscale 2014
H Zhang H Huang S He H Zeng A Pralle

Monodisperse multifunctional MnFe2O4/dye/silica core/shell nanoparticles have been designed and developed. The magnetic cores act as nano-heaters in biological systems under RF field excitation and the encapsulated dyes work as local temperature probes. The silica shells enable the water-solubility and biocompatibility of the NPs and protect the encapsulated fluorophores from photobleaching.

2014
Xianjin Cui Salome Belo Dirk Krüger Yong Yan Rafael T.M. de Rosales Maite Jauregui-Osoro Haitao Ye Shi Su Domokos Mathe Noémi Kovács Ildikó Horváth Mariann Semjeni Kavitha Sunassee Krisztian Szigeti Mark A. Green Philip J. Blower

Magnetic nanoparticles (NPs) MnFe2O4 and Fe3O4 were stabilised by depositing an Al(OH)3 layer via a hydrolysis process. The particles displayed excellent colloidal stability in water and a high affinity to [(18)F]-fluoride and bisphosphonate groups. A high radiolabeling efficiency, 97% for (18)F-fluoride and 100% for (64)Cu-bisphosphonate conjugate, was achieved by simply incubating NPs with ra...

2017
Sun-Hee Cho Ahreum Kim Woojung Shin Min Beom Heo Hyun Jong Noh Kwan Soo Hong Jee-Hyun Cho Yong Taik Lim

Injectable and stimuli-responsive hydrogels have attracted attention in molecular imaging and drug delivery because encapsulated diagnostic or therapeutic components in the hydrogel can be used to image or change the microenvironment of the injection site by controlling various stimuli such as enzymes, temperature, pH, and photonic energy. In this study, we developed a novel injectable and phot...

Journal: Nanomedicine Journal 2017
Maryam Daghighi Asli Mitra Amoli-Diva Shahla Karimi,

Objective(s): For cancer cells, an efficient and selective drug delivery vehicle can remarkably improve therapeutic approaches. This paper focuses on the synthesis and characterization of magnetic MnFe2O4 NPs and their incorporation in a dual temperature and pH-responsive polymer, which can serve as an efficient drug carrier. Materials and Methods: MnFe2O4 NPs were synthesized by chemical co-pr...

Journal: :Journal of Inorganic and Organometallic Polymers and Materials 2021

Divalent ferrite nano-crystalline materials subjected to shock wave recovery analysis bringing about prolific outcomes have received widespread attention among the scientists due their outstanding contribution that has fueled enrichment of science involving high-pressure ferrites which act as focal-point current research theme. On those lines, we intend provide Raman spectroscopic and electroch...

2015
LINFENG ZHANG JUN JI YUANXIN WU

In order to screen one suitable catalyst for magnetically stabilized fluidized bed (MSFB) reactor in the process of oxidative carbonylation of phenol to diphenyl carbonate (DPC), Pd/MFe2O4 catalysts were chosen, then prepared and characterized by XRD, H2-TPR, XPS and vibrating sample magnetometer (VSM). Compared to the other metal ion doped spinel ferrite catalysts, the catalytic activity of Pd...

2009
C-Y. Chen G-C. Liu D-C. Wu Y-M. Wang P-I. Liu T-J. Chen

We successfully synthesized and characterized a new iron-based MR contrast agent, superparamagnetic manganese ferrite nanoparticles conjugated with polyethylene glycol (MnFe2O4 -PEG), for labeling gastric stem cell in vitro. The carcinogenetic potential of the stem cell, CS12, was well preserved following MR contrast labeling. In vivo MRI depicted not only the tumor growth but also intense T2* ...

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