The effect of interlayer anion on the reactivity of Mg–Al layered double hydroxides: Improving and extending the customization capacity of anionic clays

Release kinetics from LDH-drug hybrids: Effect of layers stacking and drug solubility and polarity

“…In good accord with the structural characterization, the chemical composition and formulae of the hybrids (Table 1) established that the drug content was, at least, equal to the calculated anion exchange capacity, deduced from the Al 3+ content of the layers [29]. Furthermore, both LDH-Ibu and LDH-Nap presented a drug excess (20 and 1%, respectively) similar to those previously obtained for other anions, such as Ibu itself or dodecylsulfate [9,29].…”

“…Furthermore, both LDH-Ibu and LDH-Nap presented a drug excess (20 and 1%, respectively) similar to those previously obtained for other anions, such as Ibu itself or dodecylsulfate [9,29]. This excess indicated that these drugs were incorporated not only by electrostatic interactions with the positively charged layers, but also by specific adsorption, due to lateral interactions between their hydrophobic tails [30].…”

“…3), a behavior similar to that observed for anions with chemical affinity for LDHs [9,29]. On the other hand, LDH-Ket hybrid showed positively charged particles at pH = 7 and decreased with increasing pH, a behavior similar to that of LDH intercalated with anions exclusively bond by electrostatic interactions [29]. Finally, LDH-Nap hybrid presented an intermediate behavior, in agreement with the lower anion excess compared to LDH-Ibu.…”

Organo/LDH nanocomposite as an adsorbent of polycyclic aromatic hydrocarbons in water and soil–water systems

“…You et al [18] reported that the excess of surfactant intercalated could be due to non-polar interactions with the hydrophobic alkyl groups of exchanged DDS anions. In fact, the high affinity between DDS and the LDH surface has been confirmed in a previous study on the effect of DDS adsorption on the surface charge characteristics of LDH, where DDS was found to change the positive electrokinetic ( ) potential values of a Mg-Al-Cl LDH to negative values even at low amounts of adsorbed DDS [27].…”

Sodium dodecylsulfate-layered double hydroxide and its use in the adsorption of 17β-estradiol in wastewater

“…You et al 22 found that the excessive dodecylsulfate intercalated into the interlayer could be due to non-polar interactions with the hydrophobic alkyl groups of the intercalated dodecylsulfate. Rojas et al 23 conrmed that dodecylsulfate has a high affinity for the LDH surface in a previous study, which mainly focused on the effect on the surface charge characteristic of LDH aer dodecylsulfate was intercalated.…”