The Adsorption of Anionic and Cationic Surfactants by the Different Clay Minerals: Ftir Spectroscopic Study

The Effect of Inorganic Ions on Dodecylbenzenesulfonate Adsorption onto Hematite: an ATR‐FTIR Study

“…Adsorption of surfactants onto mineral surfaces from aqueous solutions has been the focus of many studies due to the importance of this phenomenon in a variety of applications [1], including separation of minerals by flotation [2], detergency [3] and enhanced oil recovery [4]. Further, the wide use of detergents has sparked an increasing interest in how these surfactants behave in the environment, e.g., their interaction with mineral soil particles [5,6].…”

Ruthenium(II) Complex-Induced Dispersion of Montmorillonite in a Segmented Main-Chain Liquid-Crystalline Polymer Having Side-Chain Terpyridine Group

“…It should be mentioned that referring to the FTIR spectrum of pristine MMT shown in Figure 10a of the Supporting Information, the absorption peak at wavenumber 3625 cm -1 originated from the O-H stretching of structural hydroxyl group, which is assigned to the hydroxyl groups coordinated to the octahedral cations, and the absorption peak at wavenumber 3433 cm -1 originated from the H-OH hydrogenbonded water. [14][15][16] When MMT was dispersed in PTBP-Ru-6TPy complex, the hydroxyl groups on the surface of MMT formed hydrogen bonds with the terpyridine groups in PTBP-Ru-6TPy complex. Thus, the absorption peak at 3625 cm -1 for pristine MMT has been shifted to 3420 cm -1 for (PTBP-Ru-6TPy)/MMT nanocomposite (see Figure 4).…”

“…The Fourier transform infrared (FTIR) spectra shown in Figure further confirm the presence of specific interactions, as evidenced by the increased intensity at a wavenumber of about 1680 cm -1 (see the inset of Figure ) and the new broad absorption peak appearing at a wavenumber of about 3420 cm -1 for (PTBP−Ru−6TPy)/MMT nanocomposite. It should be mentioned that referring to the FTIR spectrum of pristine MMT shown in Figure 10a of the Supporting Information, the absorption peak at wavenumber 3625 cm -1 originated from the O−H stretching of structural hydroxyl group, which is assigned to the hydroxyl groups coordinated to the octahedral cations, and the absorption peak at wavenumber 3433 cm -1 originated from the H−OH hydrogen-bonded water. − When MMT was dispersed in PTBP−Ru−6TPy complex, the hydroxyl groups on the surface of MMT formed hydrogen bonds with the terpyridine groups in PTBP−Ru−6TPy complex. Thus, the absorption peak at 3625 cm -1 for pristine MMT has been shifted to 3420 cm -1 for (PTBP−Ru−6TPy)/MMT nanocomposite (see Figure ).…”