Mg–Al hydrotalcite-like compounds containing iron-phthalocyanine complex: effect of aluminum substitution on the complex adsorption features and catalytic activity

Basic dye removal from aqueous solutions by dodecylsulfate- and dodecyl benzene sulfonate-intercalated hydrotalcite

“…1) shows peaks at 7.58Å (d 0 0 3 ), 3.78Å (d 0 0 6 ), 2.58Å (d 0 1 2 ), 1.52Å (d 1 1 0 ) and 1.49Å (d 1 1 3 ), which is similar to those reported by several authors [22][23][24]. However, the HT-SDS and HT-SDBS diffraction patterns show a shift to 26.24 and 29.47Å, respectively, indicating the intercalation of the surfactant ions in the hydrotalcite interlayer.…”

Heterogeneous catalytic degradation of phenolic substrates: Catalysts activity

“…The higher activity observed at pH 5 was ascribed to a better stabilization of the hydroxyl radical. Among the calcined samples, hydrotalcites treated at 800 • C exhibited the maximum activity, although their activities were lower [20] (Fig. 5).…”

“…Moreover, the influence of the preparation methods and the use of Cu/ZSM-5 catalysts were addressed in a recent paper [16]. It is worth to be mentioned the important investigation deals with the use of Mg-Al hydrotalcite-like materials (Mg (1−x) Al x (OH) 2 (CO 3 ) x/2 ·nH 2 O with x = 0.33, 0.25 and 0.20) as supports for the immobilization of Fe(III) tetrasulfonated phthalocyanine (FePcTs) [20]. Among metal-exchanged clays for catalytic peroxide oxidation the results obtained over extrudates of a Al-Fe pillared clay catalyst are promising for industrial wastewaters treatments [25][26][27].…”

Dissolved oxygen amperometric sensor based on layer-by-layer assembly using host–guest supramolecular interactions

“…Several methods for immobilizing these complexes have been proposed in order to maintain the electrochemical properties of the immobilized molecules, such as physical adsorption [17], self-assembled monolayer [18] and layer-by-layer [19]. Electrodes modified by simple adsorption of phthalocyanines or porphyrins are unstable and have short lifetimes as phthalocyanine films are easily leached from the electrode surface [20].…”