scholarly journals Magnetic graphene oxide modified by chloride imidazole ionic liquid for the high-efficiency adsorption of anionic dyes

RSC Advances ◽  
2017 ◽  
Vol 7 (15) ◽  
pp. 9079-9089 ◽  
Author(s):  
Huan Wang ◽  
Yinmao Wei
Keyword(s):  
Ionic Liquid ◽  
Graphene Oxide ◽  
High Efficiency ◽  
Adsorption Properties ◽  
Precipitation Method ◽  
Anionic Dyes ◽  
Magnetic Graphene Oxide ◽  
Magnetic Graphene ◽  
Methyl Imidazole ◽  
Co Precipitation

Magnetic graphene oxide modified with 1-amine-3-methyl imidazole chloride ionic liquid (LI-MGO) was prepared through a chemical co-precipitation method. Adsorption properties were evaluated by adsorption experiments with four kinds of anionic and cationic dyes.

Adsorption of Rhodamine 6G Dye on Binary System of Nanoarchitectonics Composite Magnetic Graphene Oxide Material

2020 ◽  
Vol 20 (5) ◽  
pp. 2939-2945 ◽  
Author(s):  
Drashya Gautam ◽  
Shyam Lal ◽  
Sunita Hooda
Keyword(s):  
Graphene Oxide ◽  
Rhodamine 6G ◽  
Nano Particles ◽  
Precipitation Method ◽  
Order Model ◽  
Magnetic Graphene Oxide ◽  
X Ray ◽  
Magnetic Graphene ◽  
Co Precipitation ◽  
Rhodamine 6G Dye

Magnetic Graphene Oxide nanocomposite prepared by the co-precipitation method based on concept of nanoarchitectonics. In co-precipitation method, Graphene oxide converts into Magnetic graphene oxide nanocomposite with uniform deposition of Fe3O4 nano particles on the surface of Graphene oxide. Field Emission Scanning Electron Microscopy spectroscopy technique reveals the size (~2.5 nm) and uniformity of Fe3O4 nano particles on Graphene oxide surface. The other properties characterized by Scanning electron microscopy, Raman spectroscopy, X-ray powder diffraction, X-ray photoelectron spectroscopy and vibrating-sample magnetometer. For Adsorption process, time, temperature, dose of adsorbent, initial concentration of dye solution and pH factors are optimize for Rhodamine 6G dye. Kinetic data expressed by Pseudo first order model and Pseudo second order model. Langmuir, Freundlich and Temkin isotherms used to evaluate the adsorption isotherm of Rhodamine 6G onto the surface of Magnetic graphene oxide nanocomposite and thermodynamic parameters tell us about the nature of reaction.

scholarly journals Preparation and characterization of magnetic graphene oxide nanocomposite (GO-Fe3O4) for removal of strontium and cesium from aqueous solutions

2021 ◽  
Vol 4 (1) ◽  
pp. 26
Author(s):  
Sule Aytas ◽  
Sabriye Yusan ◽  
Senol Sert ◽  
Cem Gok
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Aqueous Solutions ◽  
Photoelectron Spectroscopy ◽  
Precipitation Method ◽  
Magnetic Graphene Oxide ◽  
X Ray ◽  
Magnetic Graphene ◽  
Transmission Electron ◽  
Co Precipitation

Magnetic graphene oxide nanocomposites (M-GO) were successfully synthesized by partial reduction co-precipitation method and used for removal of Sr(II) and Cs(I) ions from aqueous solutions. The structures and properties of the M-GO was investigated by X-ray diffraction, Fourier transformed infrared spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, scanning electron microscopy, vibrating sample magnetometer (VSM) and N2-BET measurements. It is found that M-GO has 2.103 mg/g and 142.070 mg/g adsorption capacities for Sr(II) and Cs(I) ions, respectively. The adsorption isotherm matches well with the Freundlich for Sr(II) and Dubinin–Radushkevich model for Cs(I) and kinetic analysis suggests that the adsorption process is pseudo-second-ordered.

scholarly journals Preparation and characterization of magnetic graphene oxide nanocomposite (GO-Fe3O4) for removal of strontium and cesium from aqueous solutions

2018 ◽  
Vol 7 (1) ◽  
Author(s):  
Sabriye Yusan
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Aqueous Solutions ◽  
Photoelectron Spectroscopy ◽  
Precipitation Method ◽  
Magnetic Graphene Oxide ◽  
X Ray ◽  
Magnetic Graphene ◽  
Transmission Electron ◽  
Co Precipitation

<p>Magnetic graphene oxide nanocomposites (M-GO) were successfully synthesized by partial reduction co-precipitation method and used for removal of Sr(II) and Cs(I) ions from aqueous solutions. The structures and properties of the M-GO was investigated by X-ray diffraction, Fourier transformed infrared spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, scanning electron microscopy, vibrating sample magnetometer (VSM) and N<sub>2</sub>-BET measurements. It is found that M-GO has 2.103 mg/g and 142.070 mg/g adsorption capacities for Sr(II) and Cs(I) ions, respectively. The adsorption isotherm matches well with the Freundlich for Sr(II) and Dubinin–Radushkevich model for Cs(I) and kinetic analysis suggests that the adsorption process is pseudo-second-ordered.</p>

Covalently bonded double-charged ionic liquid on magnetic graphene oxide as a novel, efficient, magnetically separable and reusable sorbent for extraction of heavy metals from medicine capsules

RSC Advances ◽  
2016 ◽  
Vol 6 (93) ◽  
pp. 90360-90370 ◽  
Author(s):  
Zahra Lotfi ◽  
Hassan Zavvar Mousavi ◽  
S. Maryam Sajjadi
Keyword(s):  
Heavy Metals ◽  
Ionic Liquid ◽  
Graphene Oxide ◽  
Magnetic Graphene Oxide ◽  
Magnetic Graphene ◽  
Covalently Bonded ◽  
Magnetically Separable

Development of a new SPE sorbent with a chemically bonded double-charged ionic liquid on magnetic graphene oxide to solve the disadvantages of ionic liquid based SPE methods.

Modified surface-active ionic liquid-coated magnetic graphene oxide as a new magnetic solid phase extraction sorbent for preconcentration of trace nickel

RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 64193-64202 ◽  
Author(s):  
Elnaz Aliyari ◽  
Mahrouz Alvand ◽  
Farzaneh Shemirani
Keyword(s):  
Ionic Liquid ◽  
Graphene Oxide ◽  
Solid Phase ◽  
General Procedure ◽  
Magnetic Graphene Oxide ◽  
Nickel Ions ◽  
Magnetic Graphene ◽  
Surface Active Ionic Liquid ◽  
Modified Surface ◽  
Surface Active

General procedure for preconcentration/recovery of nickel ions using modified surface-active ionic liquid-coated magnetic graphene oxide nanocomposite.

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