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

RICARDO ROJAS; FELIPE BRUNA; CARLOS P. DE PAULI; MARIA ANGELES ULIBARRI; CARLA E. GIACOMELLI

ACADEMIC PRESS INC ELSEVIER SCIENCE

Año: 2011 vol. 359 p. 136 - 136

font size="1" face="AdvGulliv-R"> Layered double hydroxides (LDHs) reactivity and interfacial behavior are closely interconnected and control particle properties relevant to the wide range of these solids’ applications. Despite their importance, their relationship has been hardly described. In this work, chloride and dodecylsulfate (DDS) intercalated LDHs are studied combining experimental data (electrophoretic mobility and contact angle measurements, hydroxyl and organic compounds uptake) and a simple mathematical model that includes anion-binding and acid–base reactions. This approach evidences the anion effect on LDHs interfacial behavior, reflected in the opposite particle charge and the different surface hydrophobic/hydrophilic character. LDHs reactivity are also determined by the inte