CTAB solution

2010 ◽  
Vol 2010 (7) ◽  
pp. pdb.rec12254-pdb.rec12254
Keyword(s):  
Ctab Solution

Fabrication of magnesium oxide nanoparticles by solvent alteration and their bactericidal applications

2019 ◽  
Vol 7 (26) ◽  
pp. 4141-4152 ◽  
Author(s):  
Proma Bhattacharya ◽  
Sarpras Swain ◽  
Lopamudra Giri ◽  
Sudarsan Neogi
Keyword(s):  
Reactive Oxygen Species ◽  
Magnesium Oxide ◽  
Reactive Oxygen Species Generation ◽  
Reactive Oxygen ◽  
Oxide Nanoparticles ◽  
Oxygen Species ◽  
Mgo Nanoparticles ◽  
Antibacterial Ability ◽  
Ctab Solution ◽  
Magnesium Oxide Nanoparticles

MgO nanoparticles are synthesized using water, ethanol and aqueous CTAB solution. The nanoparticles synthesized in ethanol exhibited smallest size, maximum reactive oxygen species generation and maximum antibacterial ability, and low haemolysis.

An improved method of DNA isolation from plants collected in the field and conserved in saturated NaCl/CTAB solution

Taxon ◽  
2000 ◽  
Vol 49 (1) ◽  
pp. 79-84 ◽  
Author(s):  
Helena Štorchová ◽  
Radmila Hrdličková ◽  
Jindřich Chrtek ◽  
Martin Tetera ◽  
Dorothee Fitze ◽  
...  
Keyword(s):  
Dna Isolation ◽  
Improved Method ◽  
Ctab Solution

Synthesis and Stabilization of Ni Nanoparticles in a Pure Aqueous CTAB Solution

2004 ◽  
Vol 33 (4) ◽  
pp. 406-407 ◽  
Author(s):  
Szu-Han Wu ◽  
Dong-Hwang Chen
Keyword(s):  
Ni Nanoparticles ◽  
Ctab Solution

scholarly journals Modified Silica Adsorbent from Volcanic Ash for Cr(VI) Anionic Removal

2018 ◽  
Vol 18 (3) ◽  
pp. 428 ◽  
Author(s):  
Endang Tri Wahyuni ◽  
Roto Roto ◽  
Firda Ainun Nissa ◽  
Mudasir Mudasir ◽  
Nurul Hidayat Aprilita
Keyword(s):  
Silica Gel ◽  
Amorphous Silica ◽  
Volcanic Ash ◽  
Ammonium Bromide ◽  
Modified Silica ◽  
Ctab Solution ◽  
Ctab Concentration ◽  
Silica Adsorbent ◽  
Negative Surface ◽  
Unmodified Silica

In the present research, cetyltrymethyl ammonium bromide (CTAB)-modified silica from Kelud’s volcanic ash has been prepared and examined as adsorbent for removal of the hazardous Cr(VI) anion. The research was initiated with purification of SiO2 from the volcanic ash that was carried out by reacting the volcanic ash with NaOH powder at 900 °C for 2 h, followed by dissolving the ash to water at 100 °C, and then was acidified with HCl 1 M to form hydrogel. By calcination of the hydrogel, silica (SiO2) gel was obtained. The next step was modification of the silica with CTAB, that was performed by interacting the CTAB solution with the gel, in which the concentration of the CTAB was varied. Then the CTAB-modified silica samples were characterized by using FTIR, XRD, and SEM machines. The activity of the adsorbent was examined for adsorption of CrO4= in the solution. The results of the research demonstrate that the amorphous silica gel and the amorphous CTAB-modified silica have been obtained. The CTAB-modified silica was found to possess much higher ability in the adsorption of CrO4= anion, that was 48.90 mg/g, compared to that of the unmodified silica gel, as much 5.68 mg/g. These findings strongly prove that the negative surface of the CTAB-modified silica adsorbent has been successfully formed. Furthermore, it is also observed that increasing concentration of CTAB in SiO2-CTA can promote more effective adsorption of the CrO4= from the solution, but the further enlargement of the CTAB concentration leads to the adsorption decreased, and the highest adsorption was shown by CTAB-modified silica prepared with 0.10 mole of CTAB/1 mole SiO2.

Flows in Rotation Cylinder Filled With Polymer Solutions

2006 ◽  
Author(s):  
Jae Won Kim ◽  
JaeMin Hyun ◽  
Eun Young Ahn
Keyword(s):  
Apparent Viscosity ◽  
Polymer Solutions ◽  
Side Wall ◽  
Velocity Shear ◽  
Working Fluid ◽  
Shear Rates ◽  
Ctab Solution ◽  
Applied Shear Stress ◽  
Shear Front ◽  
Solid Walls

This investigation deals with the spin-up flows in a circular container of aspect ratio, 2.0. Shear front is generated in the transient spin-up process of the present flow system and it is propagating from the side wall to the central axis in a rotating container. Propagation of the shear front to the axis in a rotating container means the region behind the shear front acquires an angular momentum transfer from the solid walls. Propagating speed of the shear front depends on the apparent viscosity of polymer solution. Two kinds of polymer solutions are considered as a working fluid: one is CMC and the other is CTAB solution. CMC solution has larger apparent viscosity than that of water at the present applied shear stress, and CTAB shows varying apparent viscosities depending on the applied shear rates. Transient and spatial variations of the apparent viscosities of the present polymer solutions (CTAB and CMC) cause different propagating speeds of the shear front. In practice, CMC solution that has larger values of apparent viscosity than that of water always shows rapid approach to the steady state in comparison of the behavior of the flows with water. However, for the CTAB solution, the propagating speed of the shear front changes with the local magnitude of its apparent viscosity. Consequently, the prediction of Wedemeyer’s including viscosity in the propagating speed of the velocity shear front quantitatively agrees with the present experimental results.

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