scholarly journals Porous Graphitic Carbons Containing Nitrogen by Structuration of Chitosan with Pluronic P123

2021 ◽  
Vol 13 (11) ◽  
pp. 13499-13507
Author(s):  
Lu Peng ◽  
Yong Peng ◽  
Ana Primo ◽  
Hermenegildo García
Keyword(s):  
Pluronic P123

Adsorption of Zn(II) from Aqueous Solutions by Thiol-Functionalized MCM-48

2011 ◽  
Vol 413 ◽  
pp. 148-153 ◽  
Author(s):  
Xue Na Hu ◽  
Ya Han ◽  
Jia Yan Li ◽  
Jun Yan Wu ◽  
Jian Rong Chen ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Batch Adsorption ◽  
Order Kinetic ◽  
Pluronic P123 ◽  
Order Kinetic Model ◽  
Pseudo Second Order ◽  
Poly Ethylene Oxide ◽  
Ft Ir ◽  
Poly Ethylene ◽  
Poly Propylene

Thiol-functionalized MCM-48 (SH-MCM-48) was synthesized by co-condensation method, with co-templates of cetyltrimethylammonium bromide (CTAB) and nonionic poly (ethylene oxide)–poly (propylene oxide)–poly (ethylene oxide) triblock copolymer (Pluronic P123). The resulting material was characterized by XRD and FT-IR spectrum. The potential of SH-MCM-48 for adsorption Zn (II) from aqueous solution was examined. Batch adsorption studies were carried out to investigate the effect of experimental parameters including pH, metal ions concentration and adsorption time. The maximum adsorption capacities of Zn (II) onto SH-MCM-48 were 30.12, 34.01 and 38.02 mg g-1 at the temperature of 303, 313 and 323K, respectively. The adsorption kinetics data were found to follow the pseudo-second-order kinetic model, and adsorption isotherms were fitted well with Langmuir and Freundlich models. Moreover, the adsorption thermodynamic parameters (△G0, △H0 and △S0) were measured, and indicated that the adsorption was an exothermic and spontaneous process.

Elaboration of microporous CeO2 thin layers having nanocrystallites network controlled by Pluronic P123: Impact of key experimental parameters

2019 ◽  
Vol 94 (1) ◽  
pp. 174-185 ◽  
Author(s):  
Zijie Lu ◽  
Diane Rébiscoul ◽  
Jeremy Causse ◽  
Xavier le Goff ◽  
Nicolas Mollard ◽  
...  
Keyword(s):  
Thin Layers ◽  
Pluronic P123 ◽  
Experimental Parameters

Preparation and Characterization of Fe2O3/ SBA-15 for Fischer-Tropsch Process

2020 ◽  
Vol 850 ◽  
pp. 144-150
Author(s):  
Agija Stanke ◽  
Valdis Kampars ◽  
Oana A. Lazar ◽  
Marius Enachescu
Keyword(s):  
Average Pore Size ◽  
Direct Synthesis ◽  
Synthesis Method ◽  
Xrd Analysis ◽  
Hexagonal Structure ◽  
Catalyst Characterization ◽  
Average Pore ◽  
Pluronic P123 ◽  
Silica Source ◽  
Adsorption Desorption

In this study Fe2O3/SBA-15 catalyst was synthesized via direct synthesis method under acidic conditions using triblock copolymer Pluronic P123 as template, tetraethyl orthosilicate as a silica source and Fe (NO3)3∙9H2O as iron source. Template was removed using extraction and calcination. The obtained catalyst was characterized using XRD analysis, WDXRF spectroscopy, N2 adsorption-desorption analysis and STEM–EDX measurements. Results of catalyst characterization showed that the synthesized Fe2O3/SBA-15 is mesoporous silica with 2D p6mm hexagonal mesostructure loaded with 15.6 wt.% Fe2O3. Average pore size was 6.95 nm, homogeneous immobilized Fe2O3 nanoparticles do not disrupt the porous hexagonal structure of the support.

Small molecule-mediated self-assembly behaviors of Pluronic block copolymers in aqueous solution: impact of hydrogen bonding on the morphological transition of Pluronic micelles

Soft Matter ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 142-151 ◽  
Author(s):  
Haiyan Luo ◽  
Kun Jiang ◽  
Xiangfeng Liang ◽  
Huizhou Liu ◽  
Yingbo Li
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Bonding ◽  
Block Copolymers ◽  
Small Molecules ◽  
Small Molecule ◽  
Propyl Gallate ◽  
Self Assembly ◽  
Morphological Transition ◽  
Propyl Paraben ◽  
Pluronic P123

The influence of hydrogen bonding on the morphological transition of Pluronic P123 micelles is experimentally and theoretically investigated by introducing three small molecules, i.e. propyl benzoate (PB), propyl paraben (PP) and propyl gallate (PG).

scholarly journals Facile Synthesis and Surface Characterization of Titania-Incorporated Mesoporous Organosilica Materials

2019 ◽  
Vol 3 (3) ◽  
pp. 77
Author(s):  
Chamila Gunathilake ◽  
Chandrakantha Kalpage ◽  
Murthi Kadanapitiye ◽  
Rohan S. Dassanayake ◽  
Amanpreet S. Manchanda ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Triblock Copolymer ◽  
Surface Characterization ◽  
Titanium Isopropoxide ◽  
Ethanol Solution ◽  
Molar Ratio ◽  
Initial Reaction ◽  
Pluronic P123 ◽  
Synthesis Strategy ◽  
Bridging Groups

Titania-incorporated organosilica-mesostructures (Ti-MO) were synthesized using tris [3-(trimethoxysilyl)propyl]isocyanurate, tetraethylorthosilicate as silica precursors, and titanium isopropoxide as the titanium precursor via a co-condensation method in the presence of the triblock copolymer, Pluronic P123. The triblock copolymer was completely removed by extraction with a 95% ethanol solution, followed by a thermal treatment at 350 °C under flowing nitrogen without decomposing isocyanurate bridging groups. The molar ratio of titanium to silica in the mesostructures was gradually changed by increasing the amount of tetraethylorthosilicate in the initial reaction mixture. Our synthesis strategy also allowed us to tailor both adsorption and structural properties, including a well-developed specific surface area, high microporosity, and large pore volume. A portion of the samples was thermally treated at 600 °C to remove both the block copolymer and bridging groups. The thermal treatment at 600 °C was used to convert the amorphous titania into a crystalline anatase form. The Ti-MO materials were characterized using a N2 adsorption desorption analysis, thermogravimetric analysis (TGA), solid state nuclear magnetic resonance (NMR), transmission electron microscope (TEM), and X-ray powder diffraction (XRD). CO2 adsorption studies were also conducted to determine the basicity of the Ti-MO materials. The effect of the surface properties on the CO2 sorption was also identified.

scholarly journals Novel Surface-Modified Bilosomes as Functional and Biocompatible Nanocarriers of Hybrid Compounds

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2472
Author(s):  
Ewelina Waglewska ◽  
Agata Pucek-Kaczmarek ◽  
Urszula Bazylińska
Keyword(s):  
Light Scattering ◽  
Sodium Cholate ◽  
Preparation Technique ◽  
Present Contribution ◽  
Pluronic P123 ◽  
Vis Spectroscopy ◽  
Anticancer Treatment ◽  
Poly Ethylene ◽  
Surface Modified ◽  
Poly Propylene

In the present contribution, we demonstrate a new approach for functionalization of colloidal nanomaterial consisting of phosphatidylcholine/cholesterol-based vesicular systems modified by FDA-approved biocompatible components, i.e., sodium cholate hydrate acting as a biosurfactant and Pluronic P123—a symmetric triblock copolymer comprising poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO) blocks Eight novel bilosome formulations were prepared using the thin-film hydration method followed by sonication and extrusion in combination with homogenization technique. The optimization studies involving the influence of the preparation technique on the nanocarrier size (dynamic light scattering), charge (electrophoretic light scattering), morphology (transmission electron microscopy) and kinetic stability (backscattering profiles) revealed the most promising candidate for the co-loading of model active compounds of various solubility; namely, hydrophilic methylene blue and hydrophobic curcumin. The studies of the hybrid cargo encapsulation efficiency (UV-Vis spectroscopy) exhibited significant potential of the formulated bilosomes in further biomedical and pharmaceutical applications, including drug delivery, anticancer treatment or diagnostics.

RETRACTED: Morphological Control of CaCO3 Particles by Pluronic P123 Triblock Copolymer in Aqueous Solution

2007 ◽  
Vol 23 (10) ◽  
pp. 1487-1492 ◽  
Author(s):  
X JIANG ◽  
J CAO ◽  
M ZHENG ◽  
J GUO ◽  
S DENG ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Triblock Copolymer ◽  
Morphological Control ◽  
Pluronic P123
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