Novel intercalation mechanism of zwitterionic surfactant modified montmorillonites

Phenolic acids interactions with clay minerals: A spotlight on the adsorption mechanisms of Gallic Acid onto montmorillonite

“…lower temperature) and intercalated GA (i.e. higher temperature) (Zhu et al, 2017). Hence, this result appears to be consistent with XRD results, in which an intercalation of GA only occurs after interaction at pH=2.…”

Ultrasound-Assisted Preparation, Characterization, and Antibacterial Activity of Montmorillonite Modified by ε-Polylysine Hydrochloride

“…Compared to the FTIR spectra of the OMt, as indicated in Figure 6b, another two characteristic peaks could be observed at 1644 and 1554 cm −1 , which are attributed to the C=O stretching vibration (amide I) and N-H bending (amide II) of the ε-PL, respectively [14,34]. The wavenumbers of these two peaks were slightly different for the ε-PL and PL-OMt, indicating that the surfactant molecules were intercalated into the confined interlayer spaces [40].…”

“…The XRD patterns of the Mt and OMt are presented in Figure 5a. The d-value increased with the increase in the ultrasonic power; the highest d-value was 3.20 nm for the OMt prepared at 1800 W ultrasonic power, while the lowest d-value was 3.00 nm prepared at 0 W (without ultrasonic treatment), indicating different extents of the intercalation of the D1821 into the Mt interlayer space [22,40]. Moreover, higher-ordered reflections corresponding to the (002) and (003) planes of the Mt were observed for all of the OMt, suggesting well-ordered layer structures [24].…”

Zwitterionic-surfactant modified LAPONITE®s for removal of ions (Cs+, Sr2+ and Co2+) from aqueous solutions as a sustainable recovery method for radionuclides from aqueous wastes

“…higher temperature). 28,39 Quantitative data can be derived from these curves and are expressed in Table S2. As observed in Figure 2 and Table S2 the water content decreases with increasing CB amount from 13.7% for LAP to 4.0% for LAP-CB-4CEC respectively.…”

“…This result was previously observed with other zwitterionic surfactants intercalated within montmorillonites, for which the maximal intercalated amount reached 0.6 CEC. 39 Zeta potential (ZP) values of LAP, LAP-CB-0.5CEC and LAP-CB-4CEC were evaluated as a function of the pH. ZP values of LAP are very close to 0 in a wide range of pH values (i.e.…”