The effect of microwave-assisted synthesis on the physico-chemical properties of pamoate-intercalated layered double hydroxide

Abstract

Layered organic-inorganic hybrid nanocomposite was prepared by inserting the pamoate anion (PA) between Zn and Al layered double hydroxide (LDH) using co-precipitation method. The ageing process was done by two different methods; conventional oil bath and microwave-assisted method at various ageing times, from 15 to 60 min. As a result of successful intercalation of PA anion into Zn–Al LDH lamella, the expansion of the interlayer spacing from 8.9 to 18.1 Å was observed in the powder X-ray diffractogram of the (ZAP) nanocom-posite. Percentage of PA intercalated between the LDH was higher in the nanocomposite material aged using microwave irradiation (ZAPM) compared to conventional oil bath method (ZAP). The BET surface areas of ZAPM15 and ZAPM30 were in the range of 100–106 m 2 /g, which were higher compared to ZAP, 90 m 2 /g. In general, the microwave-assisted method has improved the physico-chemical properties of the nanocomposite material with shorter ageing time of 30 min compared to 18 h ageing time by conventional oil bath method.