External Reflection FTIR Spectroscopy of the Cationic Surfactant Hexadecyltrimethylammonium Bromide (CTAB) on an Overflowing Cylinder

Langmuir ◽  
2004 ◽  
Vol 20 (20) ◽  
pp. 8740-8753 ◽  
Author(s):  
Richard A. Campbell ◽  
Stephen R. W. Parker ◽  
James P. R. Day ◽  
Colin D. Bain
Keyword(s):  
Ftir Spectroscopy ◽  
Cationic Surfactant ◽  
Hexadecyltrimethylammonium Bromide

A fluorochrome from aniline blue: structure,synthesis and fluorescence properties

1982 ◽  
Vol 35 (12) ◽  
pp. 2571 ◽  
Author(s):  
NA Evans ◽  
PA Hoyne
Keyword(s):  
Critical Micelle Concentration ◽  
Cationic Surfactant ◽  
Fluorescence Intensity ◽  
Fluorescence Emission ◽  
Aniline Blue ◽  
Fluorescence Properties ◽  
Hexadecyltrimethylammonium Bromide ◽  
Commercial Sample ◽  
Emission Maximum ◽  
Structure Synthesis

A fluorochrome has been isolated in analytically pure form from a commercial sample of the triaryl-methane dye aniline blue. Its structure has been shown to be sodium 4,4'-[carbonylbis(benzene-4,1-diyl)bis(imino)]bisbenzenesulfonate by spectroscopic means and confirmed by synthesis. Its fluorescence emission, which is markedly solvent-dependent, is 150 times greater in butan-1-ol than in water (however, the wavelength of the emission maximum is not altered significantly). In the presence of a cationic surfactant, hexadecyltrimethylammonium bromide, the fluorescence intensity reaches a maximum at approximately the critical micelle concentration of the surfactant.

Synthesis of the Gold Nanocubes by Electrochemical Method with Surfactant Solution and Acetone Solvent Addition

2010 ◽  
Vol 434-435 ◽  
pp. 434-437 ◽  
Author(s):  
Kan Lin Chen ◽  
Chien Jung Huang ◽  
Pin Hsiang Chiu ◽  
Yeong Her Wang
Keyword(s):  
Cationic Surfactant ◽  
Electrochemical Method ◽  
Surfactant Solution ◽  
Hexadecyltrimethylammonium Bromide ◽  
Uniform Size ◽  
Growth Solution ◽  
Surfactant Solutions ◽  
Highly Uniform

Monodispersed gold nanocubes of highly uniform size were fabricated by a simple electrochemical method. The lengths of the edges of the gold nanocubes were about 30 nm. The growth solution was prepared from two cationic surfactant solutions as micelle templates with added acetone solvent. The primary surfactant was hexadecyltrimethylammonium bromide (CTAB) and the co-surfactant was tetradodecylammonium bromide (TTAB).

ADSORPTIVE REMOVAL OF METHYLENE BLUE AND ACID ORANGE 7 BY HEXADECYLTRIMETHYLAMMONIUM BROMIDE MODIFIED RICE HUSK

2016 ◽  
Vol 78 (3-2) ◽  
Author(s):  
Auni Afiqah Kamaru ◽  
Nurul Soraya Ahmad Jani ◽  
Nik Ahmad Nizam Nik Malek ◽  
Nor Suriani Sani
Keyword(s):  
Methylene Blue ◽  
Adsorption Capacity ◽  
Cationic Surfactant ◽  
Rice Husk ◽  
Adsorption Site ◽  
Hexadecyltrimethylammonium Bromide ◽  
Ammonium Compound ◽  
Cationic Dye ◽  
Acid Orange 7 ◽  
Acid Orange

The feasibility of rice husk (RRH) and surfactant modified rice husk (SMRH) to adsorb cationic dye, methylene blue (MB) and acid orange 7 (AO7) from aqueous solution was studied. SMRH was prepared by reacting RRH with different initial concentrations (1.0, 2.5 and 4.0 mM) of cationic surfactant quaternary ammonium compound, hexadecyltrimethylammonium bromide (HDTMABr). RRH and SMRH were characterized using Fourier transform infrared (FTIR) spectroscopy to determine surface functional group and effect of surfactant modification on the structure of RRH. Adsorption studies were performed in a series of batch experiment and effect of initial dye and HDTMABr concentrations on the adsorption capacity of RRH and SMRH were evaluated. The results showed that the removal of MB was higher for RRH compared to SMRH meanwhile AO7 removal was higher for SMRH compared to RRH. Modification of rice husk by cationic surfactant was proven to decrease the adsorption site for MB. On the other hand, the presence of surfactant on SMRH increased the adsorption site and allows more adsorption to occur for AO7. The equilibrium data were better described by Langmuir isotherm with maximum adsorption capacity for MB was 100.0 mg/g and 200.0 mg/g for AO7. In conclusion, the modification of rice husk by HDTMABr decreased the adsorption towards cationic dye but increased the adsorption towards anionic dye

Synthesis and characterization of clay nanocomposites based on starch

MRS Advances ◽  
2019 ◽  
Vol 4 (59-60) ◽  
pp. 3243-3249
Author(s):  
Verónica Rosendo-González ◽  
Javier Illescas ◽  
María del Carmen Díaz-Nava ◽  
Yolanda Alvarado-Pérez ◽  
José Juan García-Sánchez
Keyword(s):  
Clay Mineral ◽  
Cationic Surfactant ◽  
Clay Nanocomposites ◽  
Hexadecyltrimethylammonium Bromide ◽  
X Ray Diffraction ◽  
Sodium Trimetaphosphate ◽  
Exchange Cations ◽  
The Fourier Transform ◽  
Crosslinking Agents

ABSTRACTIn this work, the synthesis of starch-clay nanocomposites was carried out. For this purpose, natural starch was extracted from rice grains and it was characterized by structural and spectrophotometric techniques. Afterwards, it was used as the polymer matrix for the synthesis of nanocomposites crosslinked with different agents: glycerol, citric acid (CA) and sodium trimetaphosphate (STMP). As a reinforcement phase, a natural Mexican clay from the Montmorillonite-type (Mt), was employed, which was modified with a cationic surfactant, hexadecyltrimethylammonium bromide (HDTMA-Br), in order to exchange cations, present in the interlaminar spaces of the raw clay mineral with those of the cationic surfactant; thus, changing its nature from hydrophilic to hydrophobic. Characterization, of both natural and organo-modified clays, was carried out by means of scanning electron microscopy (SEM), to determine the change in morphology between these two minerals; X-ray diffraction analysis (XRD), to obtain the crystalline structure of the organo-modified clay and that of the raw clay mineral (Mt). Also, the Fourier transform infrared spectroscopy (FTIR) was employed to determine materials spectra, and their thermal stability was evaluated by means of the thermogravimetric analysis (TGA). On the other hand, the synthesis of these nanocomposites was performed using different crosslinking agents, glycerol, CA or STMP, in order to identify the effect of them into the final properties of these materials.

High resolution FTIR spectroscopy using a slit jet: sampling the overtone spectrum of 12C2H4

1997 ◽  
Vol 90 (3) ◽  
pp. 381-387 ◽  
Author(s):  
R. GEORGES ◽  
M. BACH ◽  
M. HERMAN
Keyword(s):  
High Resolution ◽  
Ftir Spectroscopy
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