A novel cyano functionalized silica-titania oxide sol–gel based ionic liquid for the extraction of hazardous chlorophenols from aqueous environments

RSC Advances ◽  
2016 ◽  
Vol 6 (55) ◽  
pp. 49358-49369 ◽  
Author(s):  
Shabnam Bakhshaei ◽  
Muhammad Afzal Kamboh ◽  
Sharifah Mohamad ◽  
Sharifuddin Md Zain ◽  
Azman Ma'amor
Keyword(s):  
Ionic Liquid ◽  
Sol Gel ◽  
Functionalized Silica ◽  
Aqueous Environments ◽  
Ph Dependent ◽  
Percent Extraction

The extraction of chlorophenols on Si-Ti@CN/IL is highly pH dependent and significant percent extraction was achieved at pH = 2.

scholarly journals Choline chloride–zinc chloride ionic liquid as a green template for the sol–gel synthesis of mesoporous titania

RSC Advances ◽  
2017 ◽  
Vol 7 (17) ◽  
pp. 10081-10091 ◽  
Author(s):  
T. Preethi ◽  
M. P. Padmapriya ◽  
B. Abarna ◽  
G. R. Rajarajeswari
Keyword(s):  
Ionic Liquid ◽  
Zinc Chloride ◽  
Choline Chloride ◽  
Sol Gel ◽  
Mesoporous Titania ◽  
Anatase Titania ◽  
Sol Gel Synthesis

Choline chloride–zinc chloride ionic liquid has been used as a green template to synthesis highly crystalline mesoporou anatase titania.

Physical state of cellulose in BmimCl: dependence of molar mass on viscoelasticity and sol-gel transition

2016 ◽  
Vol 18 (3) ◽  
pp. 1460-1469 ◽  
Author(s):  
Yongjun Ahn ◽  
Seung-Yeop Kwak ◽  
Younghan Song ◽  
Hyungsup Kim
Keyword(s):  
Phase Transition ◽  
Ionic Liquid ◽  
Physical State ◽  
Molar Mass ◽  
Sol Gel ◽  
Cellulose Depolymerization ◽  
Sol Gel Transition ◽  
Gel Transition

Monitoring cellulose depolymerization and phase transition in ionic liquid.

Synthesis of Nanosized HMS Mesoporous Molecular Sieve in an Ionic Liquid-Water Mixture

2011 ◽  
Vol 236-238 ◽  
pp. 2110-2113
Author(s):  
Hong Liu ◽  
Meng Yang Wang ◽  
Wei Ran Cao
Keyword(s):  
Electron Microscopy ◽  
Ionic Liquid ◽  
Sol Gel ◽  
Mesoporous Molecular Sieve ◽  
Nano Particles ◽  
Water Mixture ◽  
X Ray ◽  
Transmission Electron ◽  
Adsorption Desorption ◽  
Synthesized Materials

The hexagonal mesoporous silica (HMS) nano-particles were prepared in mixture of 1-butyl-3-methyl-imidazolium tetrafluoroborate (BMIM+BF4-) ionic liquid and water by a sol-gel method. The structure and morphology of obtained materials were characterized by X-ray powder diffraction (XRD), N2adsorption-desorption, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and dynamic light scattering (DLS). The influence of the amount of BMIM+BF4-was investigated. It was shown that the synthesized materials have discrete and uniform spherical morphology with the size in the range of 68-177 nm (obtained from DLS measurements), and the particle size of HMS can be controlled by varying the amount of BMIM+BF4-.

scholarly journals Small-angle scattering investigation of silica xerogels and sonogels prepared with ionic liquid pyridinium tetrafluoroborate

2017 ◽  
Vol 11 (3) ◽  
pp. 229-233 ◽  
Author(s):  
László Almásy ◽  
Ana-Maria Putz ◽  
Adél Len ◽  
Josef Plestil ◽  
Cecilia Savii
Keyword(s):  
Ionic Liquid ◽  
Small Angle ◽  
Sol Gel ◽  
Molar Ratio ◽  
Strong Increase ◽  
Silica Xerogels ◽  
X Ray Scattering ◽  
Angle Scattering ◽  
Gel Processing ◽  
Functionalized Alkoxide

Silica matrices were prepared via acid catalysed sol-gel processing augmented with sonocatalysis. As silica precursors, a mixture of tetra-functionalized alkoxide (TMOS) and three-functionalized alkoxide methyl-trimethoxysilane (MTMS) were employed. Ionic liquid N-butyl-3-methylpyridinium tetrafluoroborate ([bmPy][BF4]), was used in various proportions, aiming to catalyse the sol-gel reactions, and to influence the mesoporous silica materials properties, serving as pore template. Small-angle neutron (SANS) and small-angle X-ray scattering (SAXS) techniques were used to explore the xerogels and sonogels microstructure evolution as a function of the IL/Si molar ratio. The results show a strong increase of the primary particle size under the influence of the ionic liquid. Ultrasonic agitation leads to further size increase by ca. 10%.

scholarly journals Silver-functionalized silica aerogels and their application in the removal of iodine from aqueous environments

2019 ◽  
Vol 379 ◽  
pp. 119364 ◽  
Author(s):  
R. Matthew Asmussen ◽  
Josef Matyáš ◽  
Nikolla P. Qafoku ◽  
Albert A. Kruger
Keyword(s):  
Silica Aerogels ◽  
Functionalized Silica ◽  
Aqueous Environments

Homogeneous phase synthesis of chitosan silica hybrid materials in ionic liquid medium and adsorption of Fe(III) from aqueous solutions

2019 ◽  
Vol 38 (9) ◽  
pp. 586-597 ◽  
Author(s):  
Ananda S. Amarasekara ◽  
Deping Wang
Keyword(s):  
Ionic Liquid ◽  
Hybrid Materials ◽  
Sol Gel ◽  
Phase Reaction ◽  
Phase Synthesis ◽  
Homogeneous Phase ◽  
Sol Gel Process ◽  
Hydrolysis Of ◽  
Silica Hybrid ◽  
Ionic Liquid Medium

Two chitosan silica hybrid materials were prepared by a two-step process in 78–84% yields using the homogeneous phase reaction of 3-(triethoxysilyl)propyl isocyanate with chitosan dissolved in 1-n-butyl-3-methylimidazolium chloride ionic liquid (∼10% w/w), which was followed by NH4OH catalyzed hydrolysis of triethoxysilyl groups and then sol-gel process. These new hybrid materials were shown to adsorb up to about 95% of Fe3+ from 5 × 10−4 M aqueous solution at room temperature in 24 h.

One-step synthesis of golf ball-like thiol-functionalized silica particles

Soft Matter ◽  
2020 ◽  
Vol 16 (39) ◽  
pp. 9113-9120
Author(s):  
Ruixue Liang ◽  
Xia Fang ◽  
Biwei Qiu ◽  
Hua Zou
Keyword(s):  
Sol Gel ◽  
Silica Particles ◽  
Golf Ball ◽  
Functionalized Silica ◽  
One Step ◽  
First Time

Golf ball-like thiol-functionalized silica particles were synthesized for the first time by a one-step sol–gel reaction using 3-mercaptopropyl trimethoxysilane (MPTMS) and tetraethoxysilane (TEOS) as the precursors.

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