Simultaneous Intercalation of 1-Naphthylacetic Acid and Indole-3-butyric Acid into Layered Double Hydroxides and Controlled Release Properties

Abstract EN

Controlled release formulations have been shown to have potential in overcoming the drawbacks of conventional plant growth regulators formulations.

A controlled-release formulation of 1-naphthylacetic acid (NAA) and indole-3-butyric acid (IBA) simultaneous intercalated MgAl-layered double hydroxides (LDHs) was prepared.

The synthetic nanohybrid material was characterized by various techniques, and release kinetics was studied.

NAA and IBA anions located in the gallery of MgAl-LDHs with bilayer arrangement, and the nanohybrids particles were of typical plate-like shape with the lateral size of 50–100 nm.

The results revealed that NAA and IBA have been intercalated into the interlayer spaces of MgAl-LDHs.

The release of NAA and IBA fits pseudo-second-order model and is dependent on temperature, pH value, and release medium.

The nanohybrids of NAA and IBA simultaneously intercalated in LDHs possessed good controlled release properties.