scholarly journals Comparison of Pure and Hybrid Nanoparticles using Ionic Liquid as a Capping agent

2020 ◽  
Vol 13 (4) ◽  
pp. 413-419
Author(s):  
N. Santhi ◽  
K. Rajathi ◽  
S. Sridhar
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Electron Microscope ◽  
Hybrid Nanoparticles ◽  
Spectral Studies ◽  
Imidazolium Ionic Liquid ◽  
High Biological Activity ◽  
X Ray ◽  
Cubic Form ◽  
Co Precipitation

Ionic liquids are exceptional chemical compounds that are used in many areas of modern science. Due to their highly adjustable nature and incomparable properties, ionic liquids have become key players in the areas of synthesis, catalysis, extraction, electrochemistry, analysis, biotechnology, etc. In addition to the physical and chemical properties of ionic liquids, their high biological activity has attracted considerable attention from biochemists, ecologists and medical professionals. Due to the properties mentioned above, an imidazolium ionic liquid solvent was used for the synthesis of nanostructure nanoparticles. In the present work, cubic form of pure Fe2O3, spherical nature of pure Ag (0) and hexagonal shaped hybrid Ag- Fe2O3 were successfully synthesized by a simple co-precipitation, reduction and co-precipitation processes. The synthesized nanoparticles were characterized in detail by spectral studies such as IR, XRD, SEM, EDX and TEM analysis. The size and shape of the particles were performed by X-ray Diffraction (XRD), Scanning Electron Microscope (SEM) techniques and Transmission Electron Microscope (TEM) techniques. Quality quantity and purity of the products was checked by Energy Dispersive X-Ray Analysis (EDX).

Template Induced Synthesis of Nano-Hydroxyapatite by Co-Precipitation Method

2011 ◽  
Vol 311-313 ◽  
pp. 1713-1716 ◽  
Author(s):  
Yan Rong Sun ◽  
Tao Fan ◽  
Chang An Wang ◽  
Li Guo Ma ◽  
Feng Liu
Keyword(s):  
Electron Microscope ◽  
Chondroitin Sulfate ◽  
Aspartic Acid ◽  
Transmission Electron Microscope ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structure And Morphology ◽  
Transmission Electron ◽  
Co Precipitation

Nano-hydroxyapatite with different morphology was synthesized by the co-precipitation method coupled with biomineralization using Ca(NO3)2•4H2O and (NH4)2HPO4 as reagents, adding chondroitin sulfate, agarose and aspartic acid as template. The structure and morphology of the prepared powders were characterized by X-ray diffraction (XRD) and transmission electron microscope (TEM).

Synthesis and application of Co(salen) complexes containing proximal imidazolium ionic liquid cores

2012 ◽  
Vol 90 (1) ◽  
pp. 60-70 ◽  
Author(s):  
Swapnil Sonar ◽  
Kenson Ambrose ◽  
Arthur D. Hendsbee ◽  
Jason D. Masuda ◽  
Robert D. Singer
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Model Compound ◽  
Veratryl Alcohol ◽  
Oxidation Catalysts ◽  
Imidazolium Ionic Liquid ◽  
Lignin Model Compound ◽  
Salen Complexes ◽  
Lignin Model ◽  
Salen Ligand

Ionic ligands derived from a salen ligand containing two proximal 1,3-disubstituted imidazolium ionic liquid cores form cobalt(III) complexes capable of selectively oxidizing veratryl alcohol, a lignin model compound, to veratraldehyde using air as the source of oxygen. These complexes are easy to prepare, inexpensive, water stable, and soluble in ionic liquids, making them viable candidates for use as oxidation catalysts.

scholarly journals Fenton Degradation of Ofloxacin Using a Montmorillonite-Fe3O4 Composite

2020 ◽  
Vol 2 (1) ◽  
pp. 32
Author(s):  
Alamri Rahmah Dhahawi Ahmad ◽  
Saifullahi Shehu Imam ◽  
Wen Da Oh ◽  
Rohana Adnan
Keyword(s):  
Electron Microscope ◽  
Photoelectron Spectroscopy ◽  
High Efficiency ◽  
Solar Irradiation ◽  
Precipitation Process ◽  
Wastewater Remediation ◽  
Solution Ph ◽  
X Ray ◽  
Subsequent Degradation ◽  
Co Precipitation

In this work, FeM composites consisting of montmorillonite and variable amounts of Fe3O4 were successfully synthesized via a facile co-precipitation process. They were characterized using X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscope (FESEM), energy dispersive X-ray spectroscopy (EDX), transmission electron microscope (TEM), N2 adsorption-desorption, and Fourier transform infrared spectroscopy (FT-IR) techniques to explain the effect of Fe3O4 content on the physicochemical properties of the Fe3O4-montmorillonite (FeM) composites. The FeM composites were subsequently used as heterogeneous Fenton catalysts to activate green oxidant (H2O2) for the subsequent degradation of ofloxacin (OFL) antibiotic. The efficiency of the FeM composites was studied by varying various parameters of Fe3O4 loading on montmorillonite, catalyst dosage, initial solution pH, initial OFL concentration, different oxidants, H2O2 dosage, reaction temperature, inorganic salts, and solar irradiation. Under the conditions of 0.75 g/L FeM-10, 5 mL/L H2O2, and natural pH, almost 81% of 50 mg/L of OFL was removed within 120 min in the dark, while total organic carbon (TOC) reduction was about 56%. Moreover, the FeM-10 composite maintained high efficiency and was stable even after four continuous cycles, making it a promising candidate in real wastewater remediation.

scholarly journals Effect of Room Temperature Ionic Liquids for Electroless Nickel Plating on Acrylonitrile Butadiene Styrene Plastic

2019 ◽  
Vol 25 (3) ◽  
pp. 276-280
Author(s):  
Canan URAZ
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Acrylonitrile Butadiene Styrene ◽  
Electroless Nickel ◽  
Room Temperature Ionic Liquids ◽  
Electroless Nickel Plating ◽  
Nickel Plating ◽  
X Ray ◽  
Butadiene Styrene

In this study, electroless nickel (EN) plating on acrylonitrile butadiene styrene (ABS) engineering plastic using room temperature ionic liquids (RTIL) was studied. Electroless plating is a fundamental step in metal plating on plastic. This step makes the plastic conductive and makes it possible to a homogeneous and hard plating without using any hazardous and unfriendly chemical such as palladium, tin, etc. In the industry there are many distinct chemical materials both catalysts and activation solutions for the electroless bath which is one of the most important parts of the process. In this study the effects of the ionic liquid, plating time, and sand paper size were investigated on electroless nickel plating. The etching and the plating processes were performed with environmentally friendly chemicals instead of the chromic and sulphuric acids used in the traditional processes. Experiments were carried out with and without ionic liquid, EMIC, 1-ethyl-3-methyl imidazolium chloride (C6H11N2Cl), and with 400, 500 and 800 grit sandpaper with the application of the sand attrition process and 70, 80, and 90 °C bath temperatures with 30, 60, and 90 minutes of deposition time. The surface morphology and the thickness of deposit analysis were performed using the Fischer scope X-Ray XDL-B System, X-ray Diffraction (XRD), and Scanning Electron Microscopy (SEM). Due to the results of the experiments and analysis, the electroless nickel plating on ABS plastic was a success. The best plating was obtained at 5.010 μm as the maximum plating thickness, at 90 min of plating time and 80 °C as the plating bath temperature for electroless nickel plating on ABS plastic whit the surface activated with 800 grit sandpaper using EMIC ionic liquid. DOI: http://dx.doi.org/10.5755/j01.ms.25.3.20116

scholarly journals Ionic liquid promoted Diels-Alder Reaction between anthrone and maleimides

2010 ◽  
Vol 8 (2) ◽  
pp. 356-360 ◽  
Author(s):  
Nitin Mirgane ◽  
Sandip Kotwal ◽  
Anil Karnik
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Alder Reaction ◽  
Dual Role ◽  
Diels Alder ◽  
Environmentally Benign ◽  
Green Solvents ◽  
Imidazolium Ionic Liquid ◽  
Diels Alder Reaction

AbstractIonic liquids (IL) are gaining importance as green solvents. Imidazolium ionic liquid [bmim]+[Cl]−, an environmentally benign solvent, was found to promote the Diels-Alder reaction between anthrone and maleimides at room temperature with excellent yields. The ionic liquid played a dual role as solvent and catalyst.

Synthesis of one-dimensional structured metal phthalocyanine in an ionic liquid

2007 ◽  
Vol 11 (10) ◽  
pp. 713-718 ◽  
Author(s):  
David S. Jacob ◽  
Somashekarappa Mallenahalli ◽  
Aharon Gedanken ◽  
Leonid A. Solovyov ◽  
Evangelia Xenogiannopoulou ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Electron Microscope ◽  
High Resolution ◽  
High Yield ◽  
Metal Phthalocyanine ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
Nickel Phthalocyanine ◽  
Transmission Electron

Nickel phthalocyanine is synthesized in an ionic liquid (1-butyl-3-methylimidazolium tetrafluoroborate) giving a high yield of one-dimensional structures. The morphology of the synthesized material is detected by a high-resolution scanning electron microscope, a high-resolution transmission electron microscope, characterized by powder X-ray diffraction, and a CHN analyzer. The nonlinear optical properties of the synthesized phthalocyanine are also investigated.

In operando X-ray diffraction of lithium–oxygen batteries using an ionic liquid as an electrolyte co-solvent

2017 ◽  
Vol 41 (15) ◽  
pp. 7267-7272 ◽  
Author(s):  
E. Knipping ◽  
C. Aucher ◽  
G. Guirado ◽  
F. Fauth ◽  
L. Aubouy
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Lithium Metal ◽  
X Ray Diffraction ◽  
X Ray ◽  
Chemical Instability ◽  
In Operando ◽  
Lithium Oxygen Batteries

Chemical instability of ionic liquids in the presence of lithium metal leading to spontaneous LiOH formation.

Synthesis and Characterization of Supported on Silica Based Ionic Liquids

2015 ◽  
Vol 727-728 ◽  
pp. 34-37
Author(s):  
Li Ying Guo ◽  
Jun Shi ◽  
Jun Hai He ◽  
Ji Yue Huang ◽  
Peng Cheng Huang
Keyword(s):  
Crystal Structure ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Chemical Structure ◽  
Sol Gel ◽  
Synthesis And Characterization ◽  
Imidazolium Ionic Liquid ◽  
Imidazolium Ionic Liquids ◽  
Methyl Imidazole

Three kinds of functionalized imidazolium ionic liquid, 1-chloride (2-hydroxyethyl) -3-methyl imidazole ionic liquid [HeMIM]Cl, 1-bromide ethylamine-3-methyl imidazolium ionic liquid [AeMIM]Br and chlorinated 1-carboxyethyl-3-methyl imidazolium ionic liquid [CeMIM]Cl, were synthesized firstly. Subsequently, three kinds of supported silicon imidazolium ionic liquids were prepared from above ionic liquids with tetraethoxysilane by sol-gel method. The Chemical structure and crystal structure of the supported on silica based ionic liquids were analyzed by FTIR and XRD.

Preparation of Magnetic Ionic Liquids Composed of Hybrid-Type Anions

2012 ◽  
Vol 65 (11) ◽  
pp. 1557 ◽  
Author(s):  
Yumiko Takagi ◽  
Yoriko Kusunoki ◽  
Yukihiro Yoshida ◽  
Hirofusa Tanaka ◽  
Gunzi Saito ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Magnetic Property ◽  
Ionic Liquids ◽  
Crystallographic Analysis ◽  
The Other ◽  
X Ray ◽  
Magnetic Ionic Liquids ◽  
Hybrid Type ◽  
Magnetic Ionic Liquid ◽  
Chloride Hydrate

1-Ethyl-3-methylimidazolium ethylsulfate ([C2mim][EtSO4]) was mixed with iron(III) chloride·6H2O to give a magnetic ionic liquid composed of the hybrid-type anion, [C2mim][FeCl3·EtSO4], which showed a slightly different magnetic property than [C2mim][FeCl4]. On the other hand, reaction of [C2mim][EtSO4] with cobalt(II) chloride hydrate formed [C2mim]2[CoIICl4], the structure of which was characterised by X-ray crystallographic analysis.

scholarly journals Grubbs–Hoveyda type catalysts bearing a dicationic N-heterocyclic carbene for biphasic olefin metathesis reactions in ionic liquids

2015 ◽  
Vol 11 ◽  
pp. 1632-1638 ◽  
Author(s):  
Maximilian Koy ◽  
Hagen J Altmann ◽  
Benjamin Autenrieth ◽  
Wolfgang Frey ◽  
Michael R Buchmeiser
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Organic Solvent ◽  
Single Crystal ◽  
Ring Opening ◽  
The Novel ◽  
Metathesis Polymerization ◽  
X Ray ◽  
Metathesis Catalyst ◽  
Nonpolar Organic

The novel dicationic metathesis catalyst [(RuCl2(H2ITapMe2)(=CH–2-(2-PrO)-C6H4))2+ (OTf−)2] (Ru-2, H2ITapMe2 = 1,3-bis(2’,6’-dimethyl-4’-trimethylammoniumphenyl)-4,5-dihydroimidazol-2-ylidene, OTf− = CF3SO3 −) based on a dicationic N-heterocyclic carbene (NHC) ligand was prepared. The reactivity was tested in ring opening metathesis polymerization (ROMP) under biphasic conditions using a nonpolar organic solvent (toluene) and the ionic liquid (IL) 1-butyl-2,3-dimethylimidazolium tetrafluoroborate [BDMIM+][BF4 −]. The structure of Ru-2 was confirmed by single crystal X-ray analysis.

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