Chemical, Structural, and Thermal Properties of Zn(II)–Cr(III) Layered Double Hydroxides Intercalated with Sulfated and Sulfonated Surfactants

Studies on the formation of 5-aminosalicylate intercalated Zn–Al layered double hydroxides as a function of Zn/Al molar ratios and synthesis routes

“…The authors suggested that the different basal spacings are due to nitrate anions cointercalated during CP process. Crepaldi et al (2002) prepared Zn-Cr LDHs incorporated with sulfated and sulfonated surfactants by CP route under various experimental conditions including Zn/Cr ratio, pH, and aging time. In each of the prepared materials, the interlayer anionic arrangement did not change, being consistent with a perpendicular monolayer arrangement.…”

Azo dye removal from aqueous solution by organic-inorganic hybrid dodecanoic acid modified layered Mg-Al hydrotalcite

“…Anionic surfactants, such as sodium dodecyl sulfate (SDS) and sodium dodecyl benzene sulfonate (SDBS), were reported to modify HTC as intercalated reagents in the previous literature [17][18][19][20]. And the adsorption results showed that different removal ratios of organic pollutants were obtained using different modifiers.…”

“…Recently, some organic anions have also been intercalated into the layers of HTC to modify the hydrophobic environment and obtain higher exchangeable capacity for organic pollutants by ion exchange method and calcination-rehydration method [13][14][15][16]. Anionic surfactants like dodecylsulfate and dodecyl benzene sulfonate are intercalated into the layers of HTC to prepare novel organic-inorganic hybrid adsorbents, showing excellent adsorption ability for phenols and basic dyes [17][18][19][20]. To the best of our knowledge, no investigations have been performed with organic acids as intercalated modifier for HTC in the removal of azo dyes from wastewater.…”

Complexation of the Fe(III) and Fe(II) sulphates with diphenyl-4-amine barium sulphonate (DAS) Synthesis, thermogravimetric and spectroscopic studies

“…The complexes were characterized by TG/DTG under dynamic O 2 and N 2 atmospheres [20][21][22]. Figure 4 illustrates the evolution of the mass losses occurred in both complexes as temperature increased.…”