scholarly journals The Colloidal Stability of Magnetic Nanoparticles in Ionic Liquids

2014 ◽  
Author(s):  
Brian S. Hawkett
Keyword(s):  
Ionic Liquids ◽  
Magnetic Nanoparticles ◽  
Colloidal Stability

scholarly journals Polymeric hydrophilic ionic liquids used to modify magnetic nanoparticles for the highly selective enrichment of N-linked glycopeptides

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Fenglong Jiao ◽  
Fangyuan Gao ◽  
Heping Wang ◽  
Yulin Deng ◽  
Yangjun Zhang ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Magnetic Nanoparticles ◽  
Selective Enrichment

scholarly journals Characterization and Functionality of Immidazolium Ionic Liquids Modified Magnetic Nanoparticles

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Ying Li ◽  
Ning Tang ◽  
Fuyuhiko Inagaki ◽  
Chisato Mukai ◽  
Kazuichi Hayakawa
Keyword(s):  
Ionic Liquids ◽  
Magnetic Nanoparticles ◽  
Extraction Efficiency ◽  
Alkyl Chain ◽  
Organic Pollutant ◽  
High Adsorption ◽  
Transmission Electron ◽  
Polycyclic Aromatic ◽  
One Step ◽  
Modified Magnetic Nanoparticles

1,3-Dialkylimidazolium-based ionic liquids were chemically synthesized and bonded on the surface of magnetic nanoparticles (MNPs) with easy one-step reaction. The obtained six kinds of ionic liquid modified MNPs were characterized with transmission electron microscopy, thermogravimetric analysis, magnetization, and FTIR, which owned the high adsorption capacity due to the nanometer size and high-density modification with ionic liquids. Functionality of MNPs with ionic liquids greatly influenced the solubility of the MNPs with organic solvents depending on the alkyl chain length and the anions of the ionic liquids. Moreover, the obtained MNPs showed the specific extraction efficiency to organic pollutant, polycyclic aromatic hydrocarbons, while superparamagnetic property of the MNPs facilitated the convenient separation of MNPs from the bulks water samples.

Thermal Conductivity Enhancement of Room Temperature Ionic Liquids (RTILs) With Various Magnetic Nanoparticles

2012 ◽  
Author(s):  
N. Y. Jagath B. Nikapitiya ◽  
Hyejin Moon
Keyword(s):  
Thermal Conductivity ◽  
Ionic Liquids ◽  
Magnetic Nanoparticles ◽  
Magnetic Fields ◽  
Room Temperature ◽  
Particle Concentration ◽  
Thermal Conductivity Enhancement ◽  
Room Temperature Ionic Liquids ◽  
Conductivity Enhancement ◽  
Magnetic Nanofluids

This paper reports an experimental study of thermal conductivity of room temperature ionic liquids (RTILs) based magnetic nanofluids. Various magnetic nanoparticles of metal oxides with high thermal conductivity, such as CuO, Al2O3, Fe3O4 and Carbon Nano Tubes (CNTs), were used to prepare magnetic nanofluids, while RTIL, trihexyl (tetradecyl) posphonium dicyanamide was used as the base fluid. Two major parameters that affect to the thermal conductivity enhancement of fluids were investigated. The effect of particle concentration and external magnetic fields were tested. It was observed that the magnetic nanofluids thermal conductivities increase with increment of particle concentration and external magnetic field parallel to the temperature gradient. Besides, it was observed that under higher magnetic fields, thermal conductivity enhancement tends to approach a saturation state. Surfactant was used to disperse magnetic nanoparticles within the RTILs. The transient hot wire method was used for this investigation.

Magnetic Nanoparticles Modified by Ionic Liquids in Environmental Analysis

2021 ◽  
Vol 76 (6) ◽  
pp. 675-684
Author(s):  
O. B. Mokhodoeva ◽  
V. V. Maksimova ◽  
R. Kh. Dzhenloda ◽  
V. M. Shkinev
Keyword(s):  
Ionic Liquids ◽  
Magnetic Nanoparticles ◽  
Environmental Analysis

scholarly journals Carbon-Based Magnetic Nanocarrier for Controlled Drug Release: A Green Synthesis Approach

2018 ◽  
Vol 5 (1) ◽  
pp. 1 ◽  
Author(s):  
Jessica Oliveira ◽  
Raquel Rodrigues ◽  
Lillian Barros ◽  
Isabel Ferreira ◽  
Luís Marchesi ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Magnetic Nanoparticles ◽  
Drug Release ◽  
Phosphate Buffer ◽  
Colloidal Stability ◽  
Ph Dependence ◽  
Phosphate Buffer Solution ◽  
Controlled Drug Release ◽  
Buffer Solution ◽  
Carbon Based

In this study, hydrophilic magnetic nanoparticles were synthesized by green routes using a methanolic extract of Rubus ulmifolius Schott flowers. The prepared magnetic nanoparticles were coated with carbon-based shell for drug delivery application. The nanocomposites were further chemically functionalized with nitric acid and, sequentially, with Pluronic® F68 (CMNPs-plur) to enhance their colloidal stability. The resulting material was dispersed in phosphate buffer solution at pH 7.4 to study the Doxorubicin loading. After shaking for 48 h, 99.13% of the drug was loaded by the nanocomposites. Subsequently, the drug release was studied in different working phosphate buffer solutions (i.e., PB pH 4.5, pH 6.0 and pH 7.4) to determine the efficiency of the synthesized material for drug delivery as pH-dependent drug nanocarrier. The results have shown a drug release quantity 18% higher in mimicking tumor environment than in the physiological one. Therefore, this study demonstrates the ability of CMNPs-plur to release a drug with pH dependence, which could be used in the future for the treatment of cancer "in situ" by means of controlled drug release.

scholarly journals Tuning the colloidal stability in ionic liquids by controlling the nanoparticles/liquid interface

Soft Matter ◽  
2014 ◽  
Vol 10 (8) ◽  
pp. 1097 ◽  
Author(s):  
M. Mamusa ◽  
J. Siriex-Plénet ◽  
F. Cousin ◽  
E. Dubois ◽  
V. Peyre
Keyword(s):  
Ionic Liquids ◽  
Colloidal Stability ◽  
Liquid Interface

Immobilization of Penicillin G Acylase on Magnetic Nanoparticles Modified by Ionic Liquids

2012 ◽  
Vol 20 (1) ◽  
pp. 146-151 ◽  
Author(s):  
Huacong ZHOU ◽  
Wei LI ◽  
Qinghui SHOU ◽  
Hongshuai GAO ◽  
Peng XU ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Magnetic Nanoparticles ◽  
Penicillin G Acylase ◽  
Penicillin G

Magnetic solid-phase extraction of proteins based on hydroxy functional ionic liquid-modified magnetic nanoparticles

2014 ◽  
Vol 6 (20) ◽  
pp. 8358-8367 ◽  
Author(s):  
Jing Chen ◽  
Yuzhi Wang ◽  
Xueqin Ding ◽  
Yanhua Huang ◽  
Kaijia Xu
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Magnetic Nanoparticles ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Magnetic Solid ◽  
Extraction Performance ◽  
Modified Magnetic Nanoparticles

Hydroxy functional ionic liquids have been first designed and modified on the surface of silica-coated magnetic Fe3O4 nanoparticles (MNPs) for the investigation of the extraction performance of proteins.

RHEOLOGICAL AND MAGNETORHEOLOGICAL BEHAVIOUR OF SOME MAGNETIC FLUIDS ON POLAR AND NONPOLAR CARRIER LIQUIDS

2002 ◽  
Vol 16 (17n18) ◽  
pp. 2765-2771 ◽  
Author(s):  
OANA BĂLĂU ◽  
DOINA BICA ◽  
MARTINA KONERACKA ◽  
PETER KOPČANSKY ◽  
DANIELA SUSAN-RESIGA ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Dynamic Viscosity ◽  
Formation Process ◽  
Colloidal Stability ◽  
Magnetic Fluids ◽  
Transformer Oil ◽  
Viscosity Data ◽  
Water Based ◽  
Magnetorheological Effect ◽  
Very High

Rheological and magnetorheological behaviour of monolayer and double layer sterically stabilized magnetic fluids, with transformer oil (UTR), diloctilsebacate (DOS), heptanol (Hept), pentanol (Pent) and water (W) as carrier liquids, were investigated. The data for volumic concentration dependence of dynamic viscosity of high colloidal stability UTR, DOS, Hept and Pent samples are particularly well fitted by the formulas given by Vand (1948) and Chow (1994). The Chow type dependence proved its universal character as the viscosity data for dilution series of various magnetic fluids are well fitted by the same curve, regardless the nonpolar or polar charcater of the sample. The magnetorheological effect measured for low and medium concentration water based magnetic fluids is much higher, due to agglomerate formation process, than the corresponding values obtained for the well stabilized UTR, DOS, Hept and Pent samples, even at very high volumic fraction of magnetic nanoparticles.

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