Different morphologies of SiO2@Mg-Al-LDH nanocomposites as catalyst for the synthesis of propylene glycol methyl ether

Recovery of Palladium and Gold from PGM Ore and Concentrate Leachates Using Fe3O4@SiO2@Mg-Al-LDH Nanocomposite

“…Figure 3 illustrates the SEM image and EDS spectrum of nanocomposite Fe3O4@SiO2@Mg-Al-LDH. It can be seen that Fe3O4 were agglomerated and particles were distributed uniformly, which was in agreement with the images reported in the literature [33]. EDS spectrum displays all the expected elements, Fe, Si, O, Al and Mg.…”

“…Thus, the TEM images demonstrated that Fe 3 O 4 @SiO 2 @Mg-Al-LDH nanocomposite was successfully synthesized, and further confirmed the analytical results of XRD. These findings agreed with reported in the literature[33].…”

“…The high adsorption capacity and acceptable percentage recoveries were attributed to the incorporation of LDH material. Layered double hydroxide has been extensively studied as a potential adsorbent for the sorption removal of various pollutants [33,34]. This is due to their structural characteristics such as ion exchange and memory effect which makes LDH to be favourable for extraction and adsorption of pollutants (especially anions) in acidic and basic media.…”

Synthesis of core–shell Ce-modified mixed metal oxides derived from P123-templated layered double hydroxides

“…We proved that the core–shell functional materials with specific morphology can be prepared by certain methods. 28 We found that MgAl-LDH supported on SiO 2 surface by in situ coprecipitation method can form core–shell materials with composite shell distribution in transverse and longitudinal directions. After calcination, the composite structure still maintains a certain integrity, and solves the problem that LDH is easy to agglomerate.…”

Hollow @CuMgAl double layered hydrotalcites and mixed oxides with tunable textural and structural properties, and thus enhanced NH3-NOx-SCR activity

“…However, the current state of the literature clearly shows that SiO 2 @MgAl-LDH hybrids 16,30,38–44 are the most explored and well-described in the literature. This is probably related to (i) the relatively fast and uncomplicated synthesis of the spherical SiO 2 core with tunable control of particle size using the Stöber process, 45 (ii) the high stability of the SiO 2 @LDH composite due to the Si–O–M covalent bonds, 46 as well as (iii) the MgAl phase being among the most popular variety of LDHs.…”