Micellar Growth in Salt-Free Aqueous Solutions of a Gemini Cationic Surfactant: Evidence for a Multimodal Population of Aggregates

Langmuir ◽  
2003 ◽  
Vol 19 (4) ◽  
pp. 992-1000 ◽  
Author(s):  
V. Weber ◽  
T. Narayanan ◽  
E. Mendes ◽  
F. Schosseler
Keyword(s):  
Aqueous Solutions ◽  
Cationic Surfactant ◽  
Micellar Growth ◽  
Gemini Cationic Surfactant

scholarly journals Hydrothermal Synthesis of Hydroxyapatite Assisted by Gemini Cationic Surfactant

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Tao Zhang ◽  
Xiufeng Xiao
Keyword(s):  
Solid Solution ◽  
Hydrothermal Synthesis ◽  
Hydrothermal Treatment ◽  
Cationic Surfactant ◽  
Surfactant Concentration ◽  
Average Diameter ◽  
New Strategy ◽  
3D Architecture ◽  
Solution Reaction ◽  
Gemini Cationic Surfactant

Hydroxyapatite (HAp) has been synthesized by a hydrothermal treatment in the presence of a Gemini cationic surfactant. This process is a new strategy of synthesis and mainly consists of two parts, i.e., an ordinary hydrothermal treatment and a liquid-solid-solution reaction (LSS strategy). Crystalline HAp nanorods or nanogranules with length of 50-180 nm and width of 30-40 nm were produced by ordinary hydrothermal treatment. By contrary, HAp spheres with a 3D architecture were fabricated with Gemini cationic surfactant by LSS strategy. For Gemini cationic surfactant concentration of 0.05%, spherical HAp particles with an average diameter of 1.7 μm were obtained.

scholarly journals Equilibrium, Kinetic, and Thermodynamic Studies of Anionic Dyes Adsorption on Corn Stalks Modified by Cetylpyridinium Bromide

2018 ◽  
Vol 3 (1) ◽  
pp. 4 ◽  
Author(s):  
Liudmyla Soldatkina ◽  
Marianna Zavrichko
Keyword(s):  
Experimental Data ◽  
Aqueous Solutions ◽  
Cationic Surfactant ◽  
Kinetic Studies ◽  
Batch Adsorption ◽  
Cetylpyridinium Bromide ◽  
Anionic Dyes ◽  
Pseudo Second Order ◽  
Dyes Adsorption

Corn stalks (CS) were modified by a cationic surfactant, cetylpyridinium bromide (CPB), and used as an adsorbent (CS-CP) to remove anionic dyes [Acid Red (AR) and Acid Orange (AO)] from aqueous solutions. The FTIR analysis and the obtained calculations based on the determination of the adsorption capacity of CS towards CPB confirmed that the cationic surfactant had been adsorbed on the surface of corn stalks. Adsorption of the anionic dyes on modified corn stalks was investigated in a series of batch adsorption experiments at 303–328 K. The adsorption data were analyzed using Langmuir, Freundlich, and Temkin models. The Langmuir model was found to be more suitable for the experimental data of the anionic dyes on CS-CP than other adsorption models. Kinetic studies revealed that the pseudo-second order model showed the best fit to the experimental data. The thermodynamic parameters indicated that the adsorption process was spontaneous and exothermic. Mechanisms involving ion exchange and chemisorption might be responsible for the uptake of the anionic dyes on CS-CP. Obtained results imply that CS-CP could be applied as an effective adsorbent to remove anionic dyes from aqueous solutions.

Interaction of Polystyrene-block-poly(ethylene oxide) Micelles with Cationic Surfactant in Aqueous Solutions. Metal Colloid Formation in Hybrid Systems

Langmuir ◽  
2000 ◽  
Vol 16 (8) ◽  
pp. 3626-3632 ◽  
Author(s):  
Lydmila M. Bronstein ◽  
Dmitrii M. Chernyshov ◽  
Galina I. Timofeeva ◽  
Lydia V. Dubrovina ◽  
Pyotr M. Valetsky ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Aqueous Solutions ◽  
Hybrid Systems ◽  
Cationic Surfactant ◽  
Metal Colloid ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Colloid Formation

Contrasting effect of 1-butanol and 1, 4-butanediol on the triggered micellar self-assemblies of C16-type cationic surfactants

2021 ◽  
Author(s):  
Vinod Kumar ◽  
Rajni Verma ◽  
Dwarkesh Satodia ◽  
Debes Ray ◽  
Ketan Kuperkar ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Cationic Surfactant ◽  
Self Assembly ◽  
Cationic Surfactants ◽  
Alkyl Chain ◽  
Cetylpyridinium Bromide ◽  
Quaternary Salts ◽  
Head Groups ◽  
Contrasting Effect ◽  
Cetyltrimethylammonium Tosylate

Self-assembly in aqueous solutions of three quaternary salts based C16-type cationic surfactant with different polar head groups and identical carbon alkyl chain viz., cetylpyridinium bromide (CPB), cetyltrimethylammonium tosylate (CTAT), and...

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